<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e98ec-80d1-7009-88b2-d8341001f927,g:f2e21b3a-de11-4af7-995b-de177456e32e-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="shus-20260630.xsd#ConsolidatedBalanceSheets"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e98ec-821f-7583-a6eb-a7bb1ddcba89" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e98ec-821f-7b59-89c8-e79265101b35" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7583-a6eb-a7bb1ddcba89" xlink:to="loc_us-gaap_StatementTable_019e98ec-821f-7b59-89c8-e79265101b35" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-757b-91f3-2706cf0f9154" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e98ec-821f-7b59-89c8-e79265101b35" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-757b-91f3-2706cf0f9154" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-821f-757b-91f3-2706cf0f9154_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-757b-91f3-2706cf0f9154" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-821f-757b-91f3-2706cf0f9154_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-821f-718f-acc2-cdc253b0e205" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-757b-91f3-2706cf0f9154" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-821f-718f-acc2-cdc253b0e205" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-821f-70d0-ae30-eda6b7953e8f" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-821f-718f-acc2-cdc253b0e205" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-821f-70d0-ae30-eda6b7953e8f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FinancialServicesSegmentMember_019e98ec-821f-7e56-bb7a-8302d7ea05b5" xlink:href="shus-20260630.xsd#shus_FinancialServicesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-821f-718f-acc2-cdc253b0e205" xlink:to="loc_shus_FinancialServicesSegmentMember_019e98ec-821f-7e56-bb7a-8302d7ea05b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-821f-7d1b-bd06-35ffecc1b55a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e98ec-821f-7b59-89c8-e79265101b35" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-821f-7d1b-bd06-35ffecc1b55a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7d1b-bd06-35ffecc1b55a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-821f-7d1b-bd06-35ffecc1b55a" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7d1b-bd06-35ffecc1b55a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7c5e-bd0c-b58bba26d7a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-821f-7d1b-bd06-35ffecc1b55a" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7c5e-bd0c-b58bba26d7a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonrelatedPartyMember_019e98ec-821f-708b-b105-2e095f4041ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonrelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7c5e-bd0c-b58bba26d7a9" xlink:to="loc_us-gaap_NonrelatedPartyMember_019e98ec-821f-708b-b105-2e095f4041ee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_019e98ec-821f-725b-ab47-e96cef779066" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7c5e-bd0c-b58bba26d7a9" xlink:to="loc_us-gaap_RelatedPartyMember_019e98ec-821f-725b-ab47-e96cef779066" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7583-a6eb-a7bb1ddcba89" xlink:to="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e98ec-821f-7755-a938-a99289cadefa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e98ec-821f-7755-a938-a99289cadefa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCash_019e98ec-821f-7191-879d-4f2a71513f3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_RestrictedCash_019e98ec-821f-7191-879d-4f2a71513f3e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNet_019e98ec-821f-7608-ac48-c866759e96ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_AccountsReceivableNet_019e98ec-821f-7608-ac48-c866759e96ac" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivables_019e98ec-821f-7f77-a0dd-d3a0ad465b7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_OtherReceivables_019e98ec-821f-7f77-a0dd-d3a0ad465b7a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019e98ec-821f-7315-a30f-0a4e9eb09640" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_InventoryNet_019e98ec-821f-7315-a30f-0a4e9eb09640" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019e98ec-821f-7df3-99f3-13c98685161b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019e98ec-821f-7df3-99f3-13c98685161b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_019e98ec-821f-7eea-8583-7e9100b24327" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_019e98ec-821f-7eea-8583-7e9100b24327" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_019e98ec-821f-7552-ac4e-16057867e58d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_019e98ec-821f-7552-ac4e-16057867e58d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures_019e98ec-821f-79a1-9578-89c90d36e593" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures_019e98ec-821f-79a1-9578-89c90d36e593" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_019e98ec-821f-7229-8b23-96f3a5f8de4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetIncludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_019e98ec-821f-7229-8b23-96f3a5f8de4a" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_019e98ec-821f-722b-8596-8a086044743f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_019e98ec-821f-722b-8596-8a086044743f" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_019e98ec-821f-7ebf-9d64-5d5958ec506a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_OtherAssets_019e98ec-821f-7ebf-9d64-5d5958ec506a" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019e98ec-821f-73aa-9084-581fb4e483ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e98ec-821f-7d26-bf21-171c59dae566" xlink:to="loc_us-gaap_Assets_019e98ec-821f-73aa-9084-581fb4e483ae" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7583-a6eb-a7bb1ddcba89" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrentAndNoncurrent_019e98ec-821f-7dbc-99e3-e01170540869" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:to="loc_us-gaap_AccountsPayableCurrentAndNoncurrent_019e98ec-821f-7dbc-99e3-e01170540869" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_019e98ec-821f-7f41-bac4-18adfc7bbb50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_019e98ec-821f-7f41-bac4-18adfc7bbb50" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_019e98ec-821f-73f3-9779-4d43632d8ff7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:to="loc_us-gaap_LineOfCredit_019e98ec-821f-73f3-9779-4d43632d8ff7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_019e98ec-821f-7017-a0be-5201bd69f62b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:to="loc_us-gaap_NotesPayable_019e98ec-821f-7017-a0be-5201bd69f62b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotes_019e98ec-821f-7beb-855f-7785aaec9927" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:to="loc_us-gaap_SeniorNotes_019e98ec-821f-7beb-855f-7785aaec9927" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_019e98ec-821f-7095-a051-0ab5199a8e19" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_019e98ec-821f-7095-a051-0ab5199a8e19" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarehouseAgreementBorrowings_019e98ec-821f-77a1-88b7-147b4604137c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarehouseAgreementBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:to="loc_us-gaap_WarehouseAgreementBorrowings_019e98ec-821f-77a1-88b7-147b4604137c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019e98ec-821f-7148-bfcd-7df7da7bdad1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:to="loc_us-gaap_Liabilities_019e98ec-821f-7148-bfcd-7df7da7bdad1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_019e98ec-821f-7178-9401-906eff7c7d80" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:to="loc_us-gaap_StockholdersEquityAbstract_019e98ec-821f-7178-9401-906eff7c7d80" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019e98ec-821f-7cc0-a0c6-41f04672d303" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e98ec-821f-7178-9401-906eff7c7d80" xlink:to="loc_us-gaap_CommonStockValue_019e98ec-821f-7cc0-a0c6-41f04672d303" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019e98ec-821f-75eb-99eb-049a17050996" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e98ec-821f-7178-9401-906eff7c7d80" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019e98ec-821f-75eb-99eb-049a17050996" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e98ec-821f-7cc0-abe2-855cf6479a56" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e98ec-821f-7178-9401-906eff7c7d80" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e98ec-821f-7cc0-abe2-855cf6479a56" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e98ec-821f-70f9-b95c-98b62ad186fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e98ec-821f-7178-9401-906eff7c7d80" xlink:to="loc_us-gaap_StockholdersEquity_019e98ec-821f-70f9-b95c-98b62ad186fc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e98ec-821f-71ef-a352-53ba7e424760" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e98ec-821f-7191-bf3c-7408a1c8e75b" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e98ec-821f-71ef-a352-53ba7e424760" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/ConsolidatedBalanceSheetsParentheticals" xlink:type="simple" xlink:href="shus-20260630.xsd#ConsolidatedBalanceSheetsParentheticals"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/ConsolidatedBalanceSheetsParentheticals" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e98ec-821f-76e3-8fc5-47fb6494803d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e98ec-821f-77ed-b07c-e55aa04706ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-76e3-8fc5-47fb6494803d" xlink:to="loc_us-gaap_StatementTable_019e98ec-821f-77ed-b07c-e55aa04706ac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-821f-7332-bec9-ce5733e35d0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e98ec-821f-77ed-b07c-e55aa04706ac" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-821f-7332-bec9-ce5733e35d0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7332-bec9-ce5733e35d0f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-821f-7332-bec9-ce5733e35d0f" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7332-bec9-ce5733e35d0f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7123-b566-e24370dc043e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-821f-7332-bec9-ce5733e35d0f" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7123-b566-e24370dc043e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_019e98ec-821f-7b95-a8cf-8102fb027e4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e98ec-821f-7123-b566-e24370dc043e" xlink:to="loc_us-gaap_RelatedPartyMember_019e98ec-821f-7b95-a8cf-8102fb027e4d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivableAfterAllowanceForCreditLossCurrentRelatedPartyTypeExtensibleEnumeration_019e98ec-821f-7e1f-91f6-2424b5bda811" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherReceivableAfterAllowanceForCreditLossCurrentRelatedPartyTypeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-76e3-8fc5-47fb6494803d" xlink:to="loc_us-gaap_OtherReceivableAfterAllowanceForCreditLossCurrentRelatedPartyTypeExtensibleEnumeration_019e98ec-821f-7e1f-91f6-2424b5bda811" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_019e98ec-821f-753a-b88d-a1943be61e7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-76e3-8fc5-47fb6494803d" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_019e98ec-821f-753a-b88d-a1943be61e7d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_019e98ec-821f-7714-891d-d4aad3725d52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-76e3-8fc5-47fb6494803d" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_019e98ec-821f-7714-891d-d4aad3725d52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_019e98ec-821f-72b5-9b03-83b34cb72eec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-76e3-8fc5-47fb6494803d" xlink:to="loc_us-gaap_CommonStockSharesIssued_019e98ec-821f-72b5-9b03-83b34cb72eec" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e98ec-821f-7387-ad47-cc3288f0ae6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-76e3-8fc5-47fb6494803d" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_019e98ec-821f-7387-ad47-cc3288f0ae6d" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/ConsolidatedStatementsofOperationsandComprehensiveIncome" xlink:type="simple" xlink:href="shus-20260630.xsd#ConsolidatedStatementsofOperationsandComprehensiveIncome"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/ConsolidatedStatementsofOperationsandComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e98ec-821f-7dfa-a780-b8bd4a0e4e71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_StatementTable_019e98ec-821f-7dfa-a780-b8bd4a0e4e71" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-7be8-b3a8-aaf3c9303998" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e98ec-821f-7dfa-a780-b8bd4a0e4e71" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-7be8-b3a8-aaf3c9303998" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-821f-7be8-b3a8-aaf3c9303998_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-7be8-b3a8-aaf3c9303998" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-821f-7be8-b3a8-aaf3c9303998_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-821f-7196-8230-fdb4351889f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-7be8-b3a8-aaf3c9303998" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-821f-7196-8230-fdb4351889f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-821f-7cea-b862-58c137eb8d96" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-821f-7196-8230-fdb4351889f3" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-821f-7cea-b862-58c137eb8d96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FinancialServicesSegmentMember_019e98ec-821f-7092-bd33-aade64874aa6" xlink:href="shus-20260630.xsd#shus_FinancialServicesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-821f-7196-8230-fdb4351889f3" xlink:to="loc_shus_FinancialServicesSegmentMember_019e98ec-821f-7092-bd33-aade64874aa6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e98ec-821f-7788-a9ae-8aff4544da31" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e98ec-821f-7dfa-a780-b8bd4a0e4e71" xlink:to="loc_srt_ProductOrServiceAxis_019e98ec-821f-7788-a9ae-8aff4544da31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e98ec-821f-7788-a9ae-8aff4544da31_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e98ec-821f-7788-a9ae-8aff4544da31" xlink:to="loc_srt_ProductsAndServicesDomain_019e98ec-821f-7788-a9ae-8aff4544da31_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e98ec-821f-79b4-b2b5-5752d9be52f7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e98ec-821f-7788-a9ae-8aff4544da31" xlink:to="loc_srt_ProductsAndServicesDomain_019e98ec-821f-79b4-b2b5-5752d9be52f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomeSaleMember_019e98ec-821f-70fb-94c0-df0d958b3259" xlink:href="shus-20260630.xsd#shus_HomeSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e98ec-821f-79b4-b2b5-5752d9be52f7" xlink:to="loc_shus_HomeSaleMember_019e98ec-821f-70fb-94c0-df0d958b3259" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_LandSaleMember_019e98ec-821f-7168-bbf1-3e6cab19d078" xlink:href="shus-20260630.xsd#shus_LandSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e98ec-821f-79b4-b2b5-5752d9be52f7" xlink:to="loc_shus_LandSaleMember_019e98ec-821f-7168-bbf1-3e6cab19d078" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_019e98ec-821f-7a41-817b-e0d27771caa3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProductAndServiceOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e98ec-821f-79b4-b2b5-5752d9be52f7" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_019e98ec-821f-7a41-817b-e0d27771caa3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerProductAndServiceExtensibleList_019e98ec-821f-7020-bcda-76a6a8df05a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerProductAndServiceExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerProductAndServiceExtensibleList_019e98ec-821f-7020-bcda-76a6a8df05a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_019e98ec-821f-7bbf-adca-d4c936da9f32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_019e98ec-821f-7bbf-adca-d4c936da9f32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostDirectMaterial_019e98ec-821f-740c-a0be-d7a007b1ffaf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostDirectMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_CostDirectMaterial_019e98ec-821f-740c-a0be-d7a007b1ffaf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_019e98ec-821f-7d32-9f3a-68299fbac780" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_InventoryWriteDown_019e98ec-821f-7d32-9f3a-68299fbac780" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_019e98ec-821f-78ff-b7bb-19363d6a5fd0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_CostOfRevenue_019e98ec-821f-78ff-b7bb-19363d6a5fd0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019e98ec-821f-70ad-8115-8c864cd87cc1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_GrossProfit_019e98ec-821f-70ad-8115-8c864cd87cc1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e98ec-821f-7fc2-9c39-6e97320def4e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e98ec-821f-7fc2-9c39-6e97320def4e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterestAndDividend_019e98ec-821f-762a-b869-da4bc83be9dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeInterestAndDividend"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_InvestmentIncomeInterestAndDividend_019e98ec-821f-762a-b869-da4bc83be9dc" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019e98ec-821f-79c9-a911-106a03787bff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019e98ec-821f-79c9-a911-106a03787bff" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019e98ec-821f-73be-887f-b456366cc975" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_CostsAndExpenses_019e98ec-821f-73be-887f-b456366cc975" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeNet_019e98ec-821f-74b9-b339-46b0f5658842" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_InvestmentIncomeNet_019e98ec-821f-74b9-b339-46b0f5658842" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e98ec-821f-7075-a301-4cc934ec59ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e98ec-821f-7075-a301-4cc934ec59ca" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019e98ec-821f-7257-81ff-0dae90c3048c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019e98ec-821f-7257-81ff-0dae90c3048c" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e98ec-821f-77b0-803c-6f782b2e6dc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-7d08-bfac-e50dc935cf9f" xlink:to="loc_us-gaap_NetIncomeLoss_019e98ec-821f-77b0-803c-6f782b2e6dc5" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/ConsolidatedStatementsofChangesinStockholdersEquity" xlink:type="simple" xlink:href="shus-20260630.xsd#ConsolidatedStatementsofChangesinStockholdersEquity"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/ConsolidatedStatementsofChangesinStockholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e98ec-821f-70f1-b787-bac4a30c3d41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e98ec-821f-786d-b45f-4586773efb2f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-70f1-b787-bac4a30c3d41" xlink:to="loc_us-gaap_StatementTable_019e98ec-821f-786d-b45f-4586773efb2f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e98ec-821f-729f-9972-e9cc7f71bbad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e98ec-821f-786d-b45f-4586773efb2f" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e98ec-821f-729f-9972-e9cc7f71bbad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e98ec-821f-729f-9972-e9cc7f71bbad_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e98ec-821f-729f-9972-e9cc7f71bbad" xlink:to="loc_us-gaap_EquityComponentDomain_019e98ec-821f-729f-9972-e9cc7f71bbad_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e98ec-821f-779e-a86a-7e476ea74920" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e98ec-821f-729f-9972-e9cc7f71bbad" xlink:to="loc_us-gaap_EquityComponentDomain_019e98ec-821f-779e-a86a-7e476ea74920" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019e98ec-821f-7096-b7b3-a0f3c81e6d45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e98ec-821f-779e-a86a-7e476ea74920" xlink:to="loc_us-gaap_CommonStockMember_019e98ec-821f-7096-b7b3-a0f3c81e6d45" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019e98ec-821f-7950-8d99-b4b2fbd04f8b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e98ec-821f-779e-a86a-7e476ea74920" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019e98ec-821f-7950-8d99-b4b2fbd04f8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019e98ec-821f-7a10-bcb4-15da9f67d653" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e98ec-821f-779e-a86a-7e476ea74920" xlink:to="loc_us-gaap_RetainedEarningsMember_019e98ec-821f-7a10-bcb4-15da9f67d653" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e98ec-821f-71e6-8ddd-2278ab01b5cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-70f1-b787-bac4a30c3d41" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e98ec-821f-71e6-8ddd-2278ab01b5cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e98ec-821f-7fa3-b9d2-a6485a142423" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e98ec-821f-71e6-8ddd-2278ab01b5cc" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_019e98ec-821f-7fa3-b9d2-a6485a142423" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e98ec-821f-7794-902d-a6ba98c10f58" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e98ec-821f-71e6-8ddd-2278ab01b5cc" xlink:to="loc_us-gaap_StockholdersEquity_019e98ec-821f-7794-902d-a6ba98c10f58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e98ec-821f-7754-b3b9-a6e55b6ab4b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e98ec-821f-71e6-8ddd-2278ab01b5cc" xlink:to="loc_us-gaap_NetIncomeLoss_019e98ec-821f-7754-b3b9-a6e55b6ab4b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_019e98f4-3f3b-78fe-99a6-77c54649be1c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e98ec-821f-71e6-8ddd-2278ab01b5cc" xlink:to="loc_us-gaap_DividendsCommonStockCash_019e98f4-3f3b-78fe-99a6-77c54649be1c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e98ec-821f-78c5-82cb-d9c9db20dad8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e98ec-821f-7676-a691-a8c22201b4ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="shus-20260630.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e98ec-821f-70a4-90ca-aa485590edbd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e98ec-821f-76bc-9c4f-fa88acc81935" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-70a4-90ca-aa485590edbd" xlink:to="loc_us-gaap_StatementTable_019e98ec-821f-76bc-9c4f-fa88acc81935" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-7ca9-9c20-4d0ef9dd22e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e98ec-821f-76bc-9c4f-fa88acc81935" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-7ca9-9c20-4d0ef9dd22e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-821f-7ca9-9c20-4d0ef9dd22e2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-7ca9-9c20-4d0ef9dd22e2" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-821f-7ca9-9c20-4d0ef9dd22e2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-821f-73ea-96ae-1a48dd568b7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-821f-7ca9-9c20-4d0ef9dd22e2" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-821f-73ea-96ae-1a48dd568b7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-821f-7707-9a29-ab1dab6fac78" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-821f-73ea-96ae-1a48dd568b7a" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-821f-7707-9a29-ab1dab6fac78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FinancialServicesSegmentMember_019e98ec-821f-7c18-8c89-61a667077d78" xlink:href="shus-20260630.xsd#shus_FinancialServicesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-821f-73ea-96ae-1a48dd568b7a" xlink:to="loc_shus_FinancialServicesSegmentMember_019e98ec-821f-7c18-8c89-61a667077d78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e98ec-821f-70d9-a97c-721bb429cca9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e98ec-821f-76bc-9c4f-fa88acc81935" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e98ec-821f-70d9-a97c-721bb429cca9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-821f-70d9-a97c-721bb429cca9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-821f-70d9-a97c-721bb429cca9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-821f-70d9-a97c-721bb429cca9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-821f-7477-b6b7-e2614aa98dea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-821f-70d9-a97c-721bb429cca9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-821f-7477-b6b7-e2614aa98dea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingLineOfCreditFacilityMember_019e98ec-821f-785b-a2a6-5c65672f6298" xlink:href="shus-20260630.xsd#shus_HomebuildingLineOfCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-821f-7477-b6b7-e2614aa98dea" xlink:to="loc_shus_HomebuildingLineOfCreditFacilityMember_019e98ec-821f-785b-a2a6-5c65672f6298" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-74fa-9322-46a5cc2b7b9b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-70a4-90ca-aa485590edbd" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-74fa-9322-46a5cc2b7b9b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e98ec-821f-75bd-bcd6-b011d2c8a3b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-74fa-9322-46a5cc2b7b9b" xlink:to="loc_us-gaap_NetIncomeLoss_019e98ec-821f-75bd-bcd6-b011d2c8a3b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-74fa-9322-46a5cc2b7b9b" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_019e98ec-821f-7414-b722-5b61b3a7bd29" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:to="loc_us-gaap_DepreciationAndAmortization_019e98ec-821f-7414-b722-5b61b3a7bd29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_019e98ec-821f-7204-9e28-694228d76d11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:to="loc_us-gaap_InventoryWriteDown_019e98ec-821f-7204-9e28-694228d76d11" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncashProjectAbandonmentCosts_019e98ec-821f-7132-b42b-b8eb62e88e6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncashProjectAbandonmentCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:to="loc_us-gaap_NoncashProjectAbandonmentCosts_019e98ec-821f-7132-b42b-b8eb62e88e6d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_019e98ec-821f-7fa8-b4bf-d14990a9dc61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:to="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_019e98ec-821f-7fa8-b4bf-d14990a9dc61" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019e98ec-821f-7634-9b06-258b0a3c7b32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019e98ec-821f-7634-9b06-258b0a3c7b32" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_DistributionFromUnconsolidatedEntities_019e98ec-821f-76bf-b526-7b4174eca46c" xlink:href="shus-20260630.xsd#shus_DistributionFromUnconsolidatedEntities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:to="loc_shus_DistributionFromUnconsolidatedEntities_019e98ec-821f-76bf-b526-7b4174eca46c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FairMarketValueAdjustmentOfUnconsolidatedEntities_019fd6ec-f934-76d7-ada8-7fefda921740" xlink:href="shus-20260630.xsd#shus_FairMarketValueAdjustmentOfUnconsolidatedEntities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:to="loc_shus_FairMarketValueAdjustmentOfUnconsolidatedEntities_019fd6ec-f934-76d7-ada8-7fefda921740" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019e98ec-821f-7df3-bb7c-934da8ce24e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019e98ec-821f-7df3-bb7c-934da8ce24e4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_019e98ec-821f-7af3-9f4e-26c36293ef78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-712c-9282-9a460b66985d" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_019e98ec-821f-7af3-9f4e-26c36293ef78" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_019e98ec-8220-7ef1-809f-5bdf7139c361" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_019e98ec-821f-7af3-9f4e-26c36293ef78" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_019e98ec-8220-7ef1-809f-5bdf7139c361" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_IncreaseDecreaseInAccountsReceivableDueFromParent_019e98ec-8220-7be1-8153-daf365b25c86" xlink:href="shus-20260630.xsd#shus_IncreaseDecreaseInAccountsReceivableDueFromParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_019e98ec-821f-7af3-9f4e-26c36293ef78" xlink:to="loc_shus_IncreaseDecreaseInAccountsReceivableDueFromParent_019e98ec-8220-7be1-8153-daf365b25c86" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties_019fd62f-d406-7ff5-bd60-3b7d17a9fa26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_019e98ec-821f-7af3-9f4e-26c36293ef78" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties_019fd62f-d406-7ff5-bd60-3b7d17a9fa26" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInMortgageLoansHeldForSale_019e98ec-82bf-7698-8c23-aca52b79dbae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInMortgageLoansHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_019e98ec-821f-7af3-9f4e-26c36293ef78" xlink:to="loc_us-gaap_IncreaseDecreaseInMortgageLoansHeldForSale_019e98ec-82bf-7698-8c23-aca52b79dbae" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_019e98ec-82bf-717d-9c78-8e6ec7fca519" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_019e98ec-821f-7af3-9f4e-26c36293ef78" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_019e98ec-82bf-717d-9c78-8e6ec7fca519" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_019e98ec-82bf-79d5-a1c9-52e24ae9d7a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_019e98ec-821f-7af3-9f4e-26c36293ef78" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_019e98ec-82bf-79d5-a1c9-52e24ae9d7a6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_019e98ec-82bf-753f-8046-f661745f0dce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_019e98ec-821f-7af3-9f4e-26c36293ef78" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_019e98ec-82bf-753f-8046-f661745f0dce" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e98ec-82bf-7f68-aff1-e7d0ff8b3af7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_019e98ec-821f-74fa-9322-46a5cc2b7b9b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e98ec-82bf-7f68-aff1-e7d0ff8b3af7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_019e98ec-82bf-7b24-a86e-e4d51a96482a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-70a4-90ca-aa485590edbd" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_019e98ec-82bf-7b24-a86e-e4d51a96482a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_PaymentsForProceedsFromEquityMethodInvestments_019e98ec-82bf-774e-a7a1-46d13f076a18" xlink:href="shus-20260630.xsd#shus_PaymentsForProceedsFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_019e98ec-82bf-7b24-a86e-e4d51a96482a" xlink:to="loc_shus_PaymentsForProceedsFromEquityMethodInvestments_019e98ec-82bf-774e-a7a1-46d13f076a18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_IncreaseInReceivableFromCashPoolingArrangementWithParent_019e98ec-82bf-7d29-b39e-d54b72bc51ad" xlink:href="shus-20260630.xsd#shus_IncreaseInReceivableFromCashPoolingArrangementWithParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_019e98ec-82bf-7b24-a86e-e4d51a96482a" xlink:to="loc_shus_IncreaseInReceivableFromCashPoolingArrangementWithParent_019e98ec-82bf-7d29-b39e-d54b72bc51ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfOtherProductiveAssets_019e98ec-82bf-73da-8655-6681fdfd253e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfOtherProductiveAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_019e98ec-82bf-7b24-a86e-e4d51a96482a" xlink:to="loc_us-gaap_ProceedsFromSaleOfOtherProductiveAssets_019e98ec-82bf-73da-8655-6681fdfd253e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireOtherPropertyPlantAndEquipment_019e98ec-82bf-7706-9147-b2907711dd9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireOtherPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_019e98ec-82bf-7b24-a86e-e4d51a96482a" xlink:to="loc_us-gaap_PaymentsToAcquireOtherPropertyPlantAndEquipment_019e98ec-82bf-7706-9147-b2907711dd9c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e98ec-82bf-7ed7-b4fa-d922e2aa0dde" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_019e98ec-82bf-7b24-a86e-e4d51a96482a" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e98ec-82bf-7ed7-b4fa-d922e2aa0dde" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_019e98ec-82bf-7a76-9ed4-84c1c6f824d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-70a4-90ca-aa485590edbd" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_019e98ec-82bf-7a76-9ed4-84c1c6f824d2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromDepositOnLoan_019e98ec-82bf-73dd-ad35-1a047ef67fbf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForProceedsFromDepositOnLoan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_019e98ec-82bf-7a76-9ed4-84c1c6f824d2" xlink:to="loc_us-gaap_PaymentsForProceedsFromDepositOnLoan_019e98ec-82bf-73dd-ad35-1a047ef67fbf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_019e98ec-82bf-7864-a777-3beaf88dc6e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromRepaymentsOfLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_019e98ec-82bf-7a76-9ed4-84c1c6f824d2" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_019e98ec-82bf-7864-a777-3beaf88dc6e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_AdvancesPaymentsOnRelatedPartyLineOfCreditFromCashPoolingArrangementWithParent_019e98ec-82bf-73cf-9a1b-76768173625f" xlink:href="shus-20260630.xsd#shus_AdvancesPaymentsOnRelatedPartyLineOfCreditFromCashPoolingArrangementWithParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_019e98ec-82bf-7a76-9ed4-84c1c6f824d2" xlink:to="loc_shus_AdvancesPaymentsOnRelatedPartyLineOfCreditFromCashPoolingArrangementWithParent_019e98ec-82bf-73cf-9a1b-76768173625f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfNotesPayable_019e98ec-82bf-74c8-a182-b2e111471af1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfNotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_019e98ec-82bf-7a76-9ed4-84c1c6f824d2" xlink:to="loc_us-gaap_RepaymentsOfNotesPayable_019e98ec-82bf-74c8-a182-b2e111471af1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_019fabc0-38c1-7fb7-beb7-a70d96e18a7f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfDividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_019e98ec-82bf-7a76-9ed4-84c1c6f824d2" xlink:to="loc_us-gaap_PaymentsOfDividends_019fabc0-38c1-7fb7-beb7-a70d96e18a7f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_019fabc0-74d6-7203-98b6-4780b4525994" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfFinancingCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_019e98ec-82bf-7a76-9ed4-84c1c6f824d2" xlink:to="loc_us-gaap_PaymentsOfFinancingCosts_019fabc0-74d6-7203-98b6-4780b4525994" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e98ec-82bf-7eb4-8d09-47b9dc8e7531" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_019e98ec-82bf-7a76-9ed4-84c1c6f824d2" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e98ec-82bf-7eb4-8d09-47b9dc8e7531" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e98ec-82bf-748c-9abb-3f191a0b1b9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-70a4-90ca-aa485590edbd" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e98ec-82bf-748c-9abb-3f191a0b1b9c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperationsAbstract_019e98ec-82bf-7750-b065-e786ca90a726" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-70a4-90ca-aa485590edbd" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperationsAbstract_019e98ec-82bf-7750-b065-e786ca90a726" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_019e98ec-82bf-7959-bf8d-6c94828679f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperationsAbstract_019e98ec-82bf-7750-b065-e786ca90a726" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_019e98ec-82bf-7959-bf8d-6c94828679f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_019e98ec-82bf-743d-8a85-e14769788bf9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ReconciliationOfCashCashEquivalentsAndRestrictedCashAbstract_019e98ec-82bf-78ca-a7c0-d46012fa3634" xlink:href="shus-20260630.xsd#shus_ReconciliationOfCashCashEquivalentsAndRestrictedCashAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-70a4-90ca-aa485590edbd" xlink:to="loc_shus_ReconciliationOfCashCashEquivalentsAndRestrictedCashAbstract_019e98ec-82bf-78ca-a7c0-d46012fa3634" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e98ec-82bf-7b68-be87-3a99f8b49620" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_shus_ReconciliationOfCashCashEquivalentsAndRestrictedCashAbstract_019e98ec-82bf-78ca-a7c0-d46012fa3634" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e98ec-82bf-7b68-be87-3a99f8b49620" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_019e98ec-82bf-7f27-8316-85453aafc166" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_shus_ReconciliationOfCashCashEquivalentsAndRestrictedCashAbstract_019e98ec-82bf-78ca-a7c0-d46012fa3634" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_019e98ec-82bf-7f27-8316-85453aafc166" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_019e98ec-82bf-7384-829d-5645ea1f5b20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalCashFlowElementsAbstract_019ff74d-3809-79bd-96d1-b0c03d3f8ad4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SupplementalCashFlowElementsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e98ec-821f-70a4-90ca-aa485590edbd" xlink:to="loc_us-gaap_SupplementalCashFlowElementsAbstract_019ff74d-3809-79bd-96d1-b0c03d3f8ad4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_019ff74d-bac0-7e42-a943-5ab2e4977f41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowElementsAbstract_019ff74d-3809-79bd-96d1-b0c03d3f8ad4" xlink:to="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_019ff74d-bac0-7e42-a943-5ab2e4977f41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPayableCurrent_019ff6ca-eae5-7671-9592-c355931de0e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_019ff74d-bac0-7e42-a943-5ab2e4977f41" xlink:to="loc_us-gaap_DividendsPayableCurrent_019ff6ca-eae5-7671-9592-c355931de0e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_019ff6cd-4145-7f1f-a9c5-df605d37e1b8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentDividendsOrDistributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_019ff74d-bac0-7e42-a943-5ab2e4977f41" xlink:to="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_019ff6cd-4145-7f1f-a9c5-df605d37e1b8" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/SegmentReportingNarrativeDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#SegmentReportingNarrativeDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/SegmentReportingNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7113-b90b-a41c60f1bc2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7faf-a6a9-447395a89b41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7113-b90b-a41c60f1bc2e" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7faf-a6a9-447395a89b41" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7cc4-9617-d7c77b57c2d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7faf-a6a9-447395a89b41" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7cc4-9617-d7c77b57c2d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7cc4-9617-d7c77b57c2d3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7cc4-9617-d7c77b57c2d3" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7cc4-9617-d7c77b57c2d3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7568-a41b-8f193f0ae7ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7cc4-9617-d7c77b57c2d3" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7568-a41b-8f193f0ae7ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-718a-b047-5406e5f1d840" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7568-a41b-8f193f0ae7ae" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-718a-b047-5406e5f1d840" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-773d-b115-894f4357b820" xlink:href="shus-20260630.xsd#shus_FinancialServicesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7568-a41b-8f193f0ae7ae" xlink:to="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-773d-b115-894f4357b820" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ChiefOperatingDecisionMakerNumberOfKeyExecutivesIdentified_019e98ec-82bf-7519-ba65-b112daf74baa" xlink:href="shus-20260630.xsd#shus_ChiefOperatingDecisionMakerNumberOfKeyExecutivesIdentified"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7113-b90b-a41c60f1bc2e" xlink:to="loc_shus_ChiefOperatingDecisionMakerNumberOfKeyExecutivesIdentified_019e98ec-82bf-7519-ba65-b112daf74baa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_NumberOfReportableSegmentsDisclosedByDefinitionFlag_019e98ec-82bf-732a-9d1c-2b1bbe472056" xlink:href="shus-20260630.xsd#shus_NumberOfReportableSegmentsDisclosedByDefinitionFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7113-b90b-a41c60f1bc2e" xlink:to="loc_shus_NumberOfReportableSegmentsDisclosedByDefinitionFlag_019e98ec-82bf-732a-9d1c-2b1bbe472056" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfOperatingSegments_019e98ec-82bf-7649-aae6-4d0b2e654dfa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NumberOfOperatingSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7113-b90b-a41c60f1bc2e" xlink:to="loc_us-gaap_NumberOfOperatingSegments_019e98ec-82bf-7649-aae6-4d0b2e654dfa" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/SegmentReportingScheduleofReconciliationofRevenueandOperatingProfitLossfromSegmentstoConsolidatedDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#SegmentReportingScheduleofReconciliationofRevenueandOperatingProfitLossfromSegmentstoConsolidatedDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/SegmentReportingScheduleofReconciliationofRevenueandOperatingProfitLossfromSegmentstoConsolidatedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7702-97d3-256d21bdf75d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7125-a1c7-ff5adde95cd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7702-97d3-256d21bdf75d" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7125-a1c7-ff5adde95cd5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7c0e-9e3b-7c7a2640982e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7125-a1c7-ff5adde95cd5" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7c0e-9e3b-7c7a2640982e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7c0e-9e3b-7c7a2640982e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7c0e-9e3b-7c7a2640982e" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7c0e-9e3b-7c7a2640982e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7db6-a17d-4792493966e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7c0e-9e3b-7c7a2640982e" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7db6-a17d-4792493966e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-774d-be7d-27c94f62e4c6" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7db6-a17d-4792493966e1" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-774d-be7d-27c94f62e4c6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-7e2d-9135-4413386508f8" xlink:href="shus-20260630.xsd#shus_FinancialServicesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7db6-a17d-4792493966e1" xlink:to="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-7e2d-9135-4413386508f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_019e98ec-82bf-768d-87dc-da35960eecc8" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7125-a1c7-ff5adde95cd5" xlink:to="loc_srt_ConsolidationItemsAxis_019e98ec-82bf-768d-87dc-da35960eecc8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-768d-87dc-da35960eecc8_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_019e98ec-82bf-768d-87dc-da35960eecc8" xlink:to="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-768d-87dc-da35960eecc8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-7f75-be85-3d3989fec3bb" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_019e98ec-82bf-768d-87dc-da35960eecc8" xlink:to="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-7f75-be85-3d3989fec3bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_019e98ec-82bf-729d-8913-b8b4957845b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-7f75-be85-3d3989fec3bb" xlink:to="loc_us-gaap_OperatingSegmentsMember_019e98ec-82bf-729d-8913-b8b4957845b2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_019e98ec-82bf-7741-bac6-9d346c74ab1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-7f75-be85-3d3989fec3bb" xlink:to="loc_us-gaap_CorporateNonSegmentMember_019e98ec-82bf-7741-bac6-9d346c74ab1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e98ec-82bf-7fe8-abb3-3a98a805caa4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7125-a1c7-ff5adde95cd5" xlink:to="loc_srt_ProductOrServiceAxis_019e98ec-82bf-7fe8-abb3-3a98a805caa4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e98ec-82bf-7fe8-abb3-3a98a805caa4_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e98ec-82bf-7fe8-abb3-3a98a805caa4" xlink:to="loc_srt_ProductsAndServicesDomain_019e98ec-82bf-7fe8-abb3-3a98a805caa4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e98ec-82bf-7cf4-a42b-9c87103268a0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e98ec-82bf-7fe8-abb3-3a98a805caa4" xlink:to="loc_srt_ProductsAndServicesDomain_019e98ec-82bf-7cf4-a42b-9c87103268a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomeSaleMember_019e98ec-82bf-77ef-b1af-70eed2b58778" xlink:href="shus-20260630.xsd#shus_HomeSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e98ec-82bf-7cf4-a42b-9c87103268a0" xlink:to="loc_shus_HomeSaleMember_019e98ec-82bf-77ef-b1af-70eed2b58778" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_LandSaleMember_019e98ec-82bf-71f6-9e46-52dd43563dda" xlink:href="shus-20260630.xsd#shus_LandSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e98ec-82bf-7cf4-a42b-9c87103268a0" xlink:to="loc_shus_LandSaleMember_019e98ec-82bf-71f6-9e46-52dd43563dda" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_019e98ec-82bf-757f-8492-de36e249ee9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProductAndServiceOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e98ec-82bf-7cf4-a42b-9c87103268a0" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_019e98ec-82bf-757f-8492-de36e249ee9a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7c4b-abca-c7036dac53e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7125-a1c7-ff5adde95cd5" xlink:to="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7c4b-abca-c7036dac53e0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7c4b-abca-c7036dac53e0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7c4b-abca-c7036dac53e0" xlink:to="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7c4b-abca-c7036dac53e0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-798f-82c6-284ba560d704" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7c4b-abca-c7036dac53e0" xlink:to="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-798f-82c6-284ba560d704" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_PacificNorthwestOperatingSegmentMember_019e98ec-82bf-7f52-838e-3cd681975c87" xlink:href="shus-20260630.xsd#shus_PacificNorthwestOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-798f-82c6-284ba560d704" xlink:to="loc_shus_PacificNorthwestOperatingSegmentMember_019e98ec-82bf-7f52-838e-3cd681975c87" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_CaliforniaOperatingSegmentMember_019e98ec-82bf-73c4-b8ef-7eeddd133a56" xlink:href="shus-20260630.xsd#shus_CaliforniaOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-798f-82c6-284ba560d704" xlink:to="loc_shus_CaliforniaOperatingSegmentMember_019e98ec-82bf-73c4-b8ef-7eeddd133a56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_DesertOperatingSegmentMember_019e98ec-82bf-7d2f-81b0-679c01974781" xlink:href="shus-20260630.xsd#shus_DesertOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-798f-82c6-284ba560d704" xlink:to="loc_shus_DesertOperatingSegmentMember_019e98ec-82bf-7d2f-81b0-679c01974781" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_MountainOperatingSegmentMember_019e98ec-82bf-7aa9-a521-a579d00a75ee" xlink:href="shus-20260630.xsd#shus_MountainOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-798f-82c6-284ba560d704" xlink:to="loc_shus_MountainOperatingSegmentMember_019e98ec-82bf-7aa9-a521-a579d00a75ee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_TexasOperatingSegmentMember_019e98ec-82bf-7b76-9e49-326cc516d613" xlink:href="shus-20260630.xsd#shus_TexasOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-798f-82c6-284ba560d704" xlink:to="loc_shus_TexasOperatingSegmentMember_019e98ec-82bf-7b76-9e49-326cc516d613" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_EastOperatingSegmentMember_019e98ec-82bf-767d-ab08-d8ef8497e8e0" xlink:href="shus-20260630.xsd#shus_EastOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-798f-82c6-284ba560d704" xlink:to="loc_shus_EastOperatingSegmentMember_019e98ec-82bf-767d-ab08-d8ef8497e8e0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_MortgageOperationsMember_019e98ec-82bf-7b84-a845-5f2d8041203d" xlink:href="shus-20260630.xsd#shus_MortgageOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-798f-82c6-284ba560d704" xlink:to="loc_shus_MortgageOperationsMember_019e98ec-82bf-7b84-a845-5f2d8041203d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_OtherFinancialServicesMember_019e98ec-82bf-73e7-914a-8eeea020662d" xlink:href="shus-20260630.xsd#shus_OtherFinancialServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-798f-82c6-284ba560d704" xlink:to="loc_shus_OtherFinancialServicesMember_019e98ec-82bf-73e7-914a-8eeea020662d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_019e98ec-82bf-7977-b2ea-ac3cb30cffb5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7702-97d3-256d21bdf75d" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_019e98ec-82bf-7977-b2ea-ac3cb30cffb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019e98ec-82bf-78f4-a288-ec9f61e654f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7702-97d3-256d21bdf75d" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019e98ec-82bf-78f4-a288-ec9f61e654f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_019e98ec-82bf-7b68-abd2-990aa2d068db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7702-97d3-256d21bdf75d" xlink:to="loc_us-gaap_InventoryWriteDown_019e98ec-82bf-7b68-abd2-990aa2d068db" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e98ec-82bf-77ba-b54d-ff0d9b68d0bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7702-97d3-256d21bdf75d" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e98ec-82bf-77ba-b54d-ff0d9b68d0bb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterestAndDividend_019e98ec-82bf-7e04-aca5-9677150fb558" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeInterestAndDividend"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7702-97d3-256d21bdf75d" xlink:to="loc_us-gaap_InvestmentIncomeInterestAndDividend_019e98ec-82bf-7e04-aca5-9677150fb558" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019e98ec-82bf-7638-b3d5-b80ba34d378d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7702-97d3-256d21bdf75d" xlink:to="loc_us-gaap_CostsAndExpenses_019e98ec-82bf-7638-b3d5-b80ba34d378d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019e98ec-82bf-7cdf-a5ff-2ba05ae4b196" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7702-97d3-256d21bdf75d" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019e98ec-82bf-7cdf-a5ff-2ba05ae4b196" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e98ec-82bf-709a-9443-2a7aeecd9806" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7702-97d3-256d21bdf75d" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e98ec-82bf-709a-9443-2a7aeecd9806" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/SegmentReportingScheduleofTotalAssetsDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#SegmentReportingScheduleofTotalAssetsDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/SegmentReportingScheduleofTotalAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7ac7-91b9-54f4ef7f1cda" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7324-9968-c23588b7436c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7ac7-91b9-54f4ef7f1cda" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7324-9968-c23588b7436c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_019e98ec-82bf-7283-9996-5ec97d88f9b3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7324-9968-c23588b7436c" xlink:to="loc_srt_ConsolidationItemsAxis_019e98ec-82bf-7283-9996-5ec97d88f9b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-7283-9996-5ec97d88f9b3_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_019e98ec-82bf-7283-9996-5ec97d88f9b3" xlink:to="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-7283-9996-5ec97d88f9b3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-75ca-bcc5-4ada54692763" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_019e98ec-82bf-7283-9996-5ec97d88f9b3" xlink:to="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-75ca-bcc5-4ada54692763" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_019e98ec-82bf-7bb9-9d05-c3e3903c76a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-75ca-bcc5-4ada54692763" xlink:to="loc_us-gaap_OperatingSegmentsMember_019e98ec-82bf-7bb9-9d05-c3e3903c76a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_019e98ec-82bf-7f3a-873e-7305853afadc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019e98ec-82bf-75ca-bcc5-4ada54692763" xlink:to="loc_us-gaap_CorporateNonSegmentMember_019e98ec-82bf-7f3a-873e-7305853afadc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7057-b440-970b522b19dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7324-9968-c23588b7436c" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7057-b440-970b522b19dc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7057-b440-970b522b19dc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7057-b440-970b522b19dc" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7057-b440-970b522b19dc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-72d1-a58a-f8be52796490" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7057-b440-970b522b19dc" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-72d1-a58a-f8be52796490" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-7a02-a9ea-19a2543ddd5a" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-72d1-a58a-f8be52796490" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-7a02-a9ea-19a2543ddd5a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-7d39-910f-d69807e40124" xlink:href="shus-20260630.xsd#shus_FinancialServicesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-72d1-a58a-f8be52796490" xlink:to="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-7d39-910f-d69807e40124" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-73c4-8c23-4dd3178d0e88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7324-9968-c23588b7436c" xlink:to="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-73c4-8c23-4dd3178d0e88" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-73c4-8c23-4dd3178d0e88_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-73c4-8c23-4dd3178d0e88" xlink:to="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-73c4-8c23-4dd3178d0e88_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f66-9f08-6fd7c75a2312" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-73c4-8c23-4dd3178d0e88" xlink:to="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f66-9f08-6fd7c75a2312" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_PacificNorthwestOperatingSegmentMember_019e98ec-82bf-7298-a880-c50addcd1aa0" xlink:href="shus-20260630.xsd#shus_PacificNorthwestOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f66-9f08-6fd7c75a2312" xlink:to="loc_shus_PacificNorthwestOperatingSegmentMember_019e98ec-82bf-7298-a880-c50addcd1aa0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_CaliforniaOperatingSegmentMember_019e98ec-82bf-71aa-8cbd-11928a69c66b" xlink:href="shus-20260630.xsd#shus_CaliforniaOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f66-9f08-6fd7c75a2312" xlink:to="loc_shus_CaliforniaOperatingSegmentMember_019e98ec-82bf-71aa-8cbd-11928a69c66b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_DesertOperatingSegmentMember_019e98ec-82bf-7c5d-83a4-75c3a2c88cef" xlink:href="shus-20260630.xsd#shus_DesertOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f66-9f08-6fd7c75a2312" xlink:to="loc_shus_DesertOperatingSegmentMember_019e98ec-82bf-7c5d-83a4-75c3a2c88cef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_MountainOperatingSegmentMember_019e98ec-82bf-78be-9c2d-13df2e2df63e" xlink:href="shus-20260630.xsd#shus_MountainOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f66-9f08-6fd7c75a2312" xlink:to="loc_shus_MountainOperatingSegmentMember_019e98ec-82bf-78be-9c2d-13df2e2df63e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_TexasOperatingSegmentMember_019e98ec-82bf-7644-b6b5-067f032654fd" xlink:href="shus-20260630.xsd#shus_TexasOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f66-9f08-6fd7c75a2312" xlink:to="loc_shus_TexasOperatingSegmentMember_019e98ec-82bf-7644-b6b5-067f032654fd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_EastOperatingSegmentMember_019e98ec-82bf-7c46-b2f4-dbfa7eebe8f6" xlink:href="shus-20260630.xsd#shus_EastOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f66-9f08-6fd7c75a2312" xlink:to="loc_shus_EastOperatingSegmentMember_019e98ec-82bf-7c46-b2f4-dbfa7eebe8f6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_MortgageOperationsMember_019e98ec-82bf-791e-bd31-043b85ae1146" xlink:href="shus-20260630.xsd#shus_MortgageOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f66-9f08-6fd7c75a2312" xlink:to="loc_shus_MortgageOperationsMember_019e98ec-82bf-791e-bd31-043b85ae1146" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_OtherFinancialServicesMember_019e98ec-82bf-7f8a-971c-9b993e5a0308" xlink:href="shus-20260630.xsd#shus_OtherFinancialServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f66-9f08-6fd7c75a2312" xlink:to="loc_shus_OtherFinancialServicesMember_019e98ec-82bf-7f8a-971c-9b993e5a0308" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019e98ec-82bf-72a7-82d3-7da5aa9a685d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7ac7-91b9-54f4ef7f1cda" xlink:to="loc_us-gaap_Assets_019e98ec-82bf-72a7-82d3-7da5aa9a685d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/FairValueMeasurementsScheduleofFairValueAssetsMeasuredonRecurringBasisDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#FairValueMeasurementsScheduleofFairValueAssetsMeasuredonRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/FairValueMeasurementsScheduleofFairValueAssetsMeasuredonRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-79f1-8e03-a8d2a5573bb0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-7677-a2e1-cff03721f885" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-79f1-8e03-a8d2a5573bb0" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-7677-a2e1-cff03721f885" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e98ec-82bf-7b72-a616-506d26ed435f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-7677-a2e1-cff03721f885" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e98ec-82bf-7b72-a616-506d26ed435f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e98ec-82bf-7b72-a616-506d26ed435f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e98ec-82bf-7b72-a616-506d26ed435f" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e98ec-82bf-7b72-a616-506d26ed435f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e98ec-82bf-7d5b-82f5-630164f5cff9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e98ec-82bf-7b72-a616-506d26ed435f" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e98ec-82bf-7d5b-82f5-630164f5cff9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019e98ec-82bf-7b32-ab19-bfc172d2aff9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e98ec-82bf-7d5b-82f5-630164f5cff9" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019e98ec-82bf-7b32-ab19-bfc172d2aff9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019e98ec-82bf-78d3-bd65-6a8cb44e92dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-7677-a2e1-cff03721f885" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019e98ec-82bf-78d3-bd65-6a8cb44e92dc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-78d3-bd65-6a8cb44e92dc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019e98ec-82bf-78d3-bd65-6a8cb44e92dc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-78d3-bd65-6a8cb44e92dc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-70fb-9193-41d079298246" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019e98ec-82bf-78d3-bd65-6a8cb44e92dc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-70fb-9193-41d079298246" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateLockCommitmentsMember_019e98ec-82bf-7aa0-9e88-0d55b934292f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateLockCommitmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-70fb-9193-41d079298246" xlink:to="loc_us-gaap_InterestRateLockCommitmentsMember_019e98ec-82bf-7aa0-9e88-0d55b934292f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ForwardSalesOfMortgageBackedSecuritiesMember_019e98ec-82bf-728f-8362-91a4a0a69661" xlink:href="shus-20260630.xsd#shus_ForwardSalesOfMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-70fb-9193-41d079298246" xlink:to="loc_shus_ForwardSalesOfMortgageBackedSecuritiesMember_019e98ec-82bf-728f-8362-91a4a0a69661" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_MandatoryDeliveryForwardLoanSaleCommitmentsMember_019e98ec-82bf-7fa9-b6dc-805f97b5283f" xlink:href="shus-20260630.xsd#shus_MandatoryDeliveryForwardLoanSaleCommitmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-70fb-9193-41d079298246" xlink:to="loc_shus_MandatoryDeliveryForwardLoanSaleCommitmentsMember_019e98ec-82bf-7fa9-b6dc-805f97b5283f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BestEffortDeliveryForwardLoanSaleCommitmentsMember_019e98ec-82bf-732f-9173-b66039da79cb" xlink:href="shus-20260630.xsd#shus_BestEffortDeliveryForwardLoanSaleCommitmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-70fb-9193-41d079298246" xlink:to="loc_shus_BestEffortDeliveryForwardLoanSaleCommitmentsMember_019e98ec-82bf-732f-9173-b66039da79cb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgagesHeldForSaleFairValueDisclosure_019e98ec-82bf-7992-8558-dec42d2a4934" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgagesHeldForSaleFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-79f1-8e03-a8d2a5573bb0" xlink:to="loc_us-gaap_MortgagesHeldForSaleFairValueDisclosure_019e98ec-82bf-7992-8558-dec42d2a4934" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet_019e98ec-82bf-79c9-a67d-0e6562990ff0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-79f1-8e03-a8d2a5573bb0" xlink:to="loc_us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet_019e98ec-82bf-79c9-a67d-0e6562990ff0" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#FairValueMeasurementsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-7bfc-8274-930b1d197a4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-7c03-9405-711ebf753e2d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-7bfc-8274-930b1d197a4b" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-7c03-9405-711ebf753e2d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateLoanTypeAxis_019e98ec-82bf-765c-b27f-8a162de67da3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MortgageLoansOnRealEstateLoanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-7c03-9405-711ebf753e2d" xlink:to="loc_srt_MortgageLoansOnRealEstateLoanTypeAxis_019e98ec-82bf-765c-b27f-8a162de67da3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateLoanTypeDomain_019e98ec-82bf-765c-b27f-8a162de67da3_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MortgageLoansOnRealEstateLoanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MortgageLoansOnRealEstateLoanTypeAxis_019e98ec-82bf-765c-b27f-8a162de67da3" xlink:to="loc_srt_MortgageLoansOnRealEstateLoanTypeDomain_019e98ec-82bf-765c-b27f-8a162de67da3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateLoanTypeDomain_019e98ec-82bf-7fd1-9dea-a51118605ae4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MortgageLoansOnRealEstateLoanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MortgageLoansOnRealEstateLoanTypeAxis_019e98ec-82bf-765c-b27f-8a162de67da3" xlink:to="loc_srt_MortgageLoansOnRealEstateLoanTypeDomain_019e98ec-82bf-7fd1-9dea-a51118605ae4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_UnderCommitmentToSellMember_019e98ec-82bf-7846-86c6-88a48f27f8e4" xlink:href="shus-20260630.xsd#shus_UnderCommitmentToSellMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateLoanTypeDomain_019e98ec-82bf-7fd1-9dea-a51118605ae4" xlink:to="loc_shus_UnderCommitmentToSellMember_019e98ec-82bf-7846-86c6-88a48f27f8e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_NotUnderCommitmentToSellMember_019e98ec-82bf-7ec1-96a5-fc3b69b77aca" xlink:href="shus-20260630.xsd#shus_NotUnderCommitmentToSellMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateLoanTypeDomain_019e98ec-82bf-7fd1-9dea-a51118605ae4" xlink:to="loc_shus_NotUnderCommitmentToSellMember_019e98ec-82bf-7ec1-96a5-fc3b69b77aca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e98ec-82bf-7a49-bc6a-6c2c09b49647" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-7c03-9405-711ebf753e2d" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e98ec-82bf-7a49-bc6a-6c2c09b49647" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e98ec-82bf-7a49-bc6a-6c2c09b49647_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e98ec-82bf-7a49-bc6a-6c2c09b49647" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e98ec-82bf-7a49-bc6a-6c2c09b49647_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e98ec-82bf-733d-888a-3b1c2ffeea37" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e98ec-82bf-7a49-bc6a-6c2c09b49647" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e98ec-82bf-733d-888a-3b1c2ffeea37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019e98ec-82bf-707e-b6dc-623ab1f1efea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e98ec-82bf-733d-888a-3b1c2ffeea37" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019e98ec-82bf-707e-b6dc-623ab1f1efea" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e98ec-82bf-7b00-8fa8-adf0f09f9d0e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-7c03-9405-711ebf753e2d" xlink:to="loc_srt_RangeAxis_019e98ec-82bf-7b00-8fa8-adf0f09f9d0e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e98ec-82bf-7b00-8fa8-adf0f09f9d0e_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e98ec-82bf-7b00-8fa8-adf0f09f9d0e" xlink:to="loc_srt_RangeMember_019e98ec-82bf-7b00-8fa8-adf0f09f9d0e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e98ec-82bf-76da-8a36-a2a3c0ed1768" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e98ec-82bf-7b00-8fa8-adf0f09f9d0e" xlink:to="loc_srt_RangeMember_019e98ec-82bf-76da-8a36-a2a3c0ed1768" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e98ec-82bf-7a09-808e-fcfb16afe3e6" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e98ec-82bf-76da-8a36-a2a3c0ed1768" xlink:to="loc_srt_MinimumMember_019e98ec-82bf-7a09-808e-fcfb16afe3e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_019e98ec-82bf-7eb2-8742-6de42318710b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-7bfc-8274-930b1d197a4b" xlink:to="loc_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_019e98ec-82bf-7eb2-8742-6de42318710b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfMortgageLoans_019e98ec-82bf-79a9-8c71-788b1be53d16" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfMortgageLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-7bfc-8274-930b1d197a4b" xlink:to="loc_us-gaap_GainLossOnSaleOfMortgageLoans_019e98ec-82bf-79a9-8c71-788b1be53d16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_019e98ec-82bf-7546-997a-a4619e2343f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-7bfc-8274-930b1d197a4b" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_019e98ec-82bf-7546-997a-a4619e2343f0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ShortTermBorrowingsMaturityPeriod_019e98ec-82bf-7fbc-9352-a0e5111c3248" xlink:href="shus-20260630.xsd#shus_ShortTermBorrowingsMaturityPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-7bfc-8274-930b1d197a4b" xlink:to="loc_shus_ShortTermBorrowingsMaturityPeriod_019e98ec-82bf-7fbc-9352-a0e5111c3248" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/FairValueMeasurementsScheduleofGainLossonDerivativeandFinancialInstrumentsDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#FairValueMeasurementsScheduleofGainLossonDerivativeandFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/FairValueMeasurementsScheduleofGainLossonDerivativeandFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_019e98ec-82bf-742b-855b-49ea3a2996c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019e98ec-82bf-7d55-a149-a625bf63fa4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019e98ec-82bf-742b-855b-49ea3a2996c6" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019e98ec-82bf-7d55-a149-a625bf63fa4a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019e98ec-82bf-7f1a-a425-fa5ba9004b9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019e98ec-82bf-7d55-a149-a625bf63fa4a" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019e98ec-82bf-7f1a-a425-fa5ba9004b9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-7f1a-a425-fa5ba9004b9c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019e98ec-82bf-7f1a-a425-fa5ba9004b9c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-7f1a-a425-fa5ba9004b9c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-7c21-a4d4-37282e27edd6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019e98ec-82bf-7f1a-a425-fa5ba9004b9c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-7c21-a4d4-37282e27edd6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateLockCommitmentsMember_019e98ec-82bf-7d55-8ecd-5a8fbea8b8cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateLockCommitmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-7c21-a4d4-37282e27edd6" xlink:to="loc_us-gaap_InterestRateLockCommitmentsMember_019e98ec-82bf-7d55-8ecd-5a8fbea8b8cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ForwardSalesOfMortgageBackedSecuritiesMember_019e98ec-82bf-75db-8fdc-b5a51b2899fb" xlink:href="shus-20260630.xsd#shus_ForwardSalesOfMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-7c21-a4d4-37282e27edd6" xlink:to="loc_shus_ForwardSalesOfMortgageBackedSecuritiesMember_019e98ec-82bf-75db-8fdc-b5a51b2899fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_MandatoryDeliveryForwardLoanSaleCommitmentsMember_019e98ec-82bf-74b0-8bbe-aaa9bbe2889a" xlink:href="shus-20260630.xsd#shus_MandatoryDeliveryForwardLoanSaleCommitmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-7c21-a4d4-37282e27edd6" xlink:to="loc_shus_MandatoryDeliveryForwardLoanSaleCommitmentsMember_019e98ec-82bf-74b0-8bbe-aaa9bbe2889a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BestEffortDeliveryForwardLoanSaleCommitmentsMember_019e98ec-82bf-74b9-bcf2-dc95cd7b3624" xlink:href="shus-20260630.xsd#shus_BestEffortDeliveryForwardLoanSaleCommitmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019e98ec-82bf-7c21-a4d4-37282e27edd6" xlink:to="loc_shus_BestEffortDeliveryForwardLoanSaleCommitmentsMember_019e98ec-82bf-74b9-bcf2-dc95cd7b3624" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_019e98ec-82bf-7a54-b02e-dd2eb9123e11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019e98ec-82bf-742b-855b-49ea3a2996c6" xlink:to="loc_us-gaap_DerivativeNotionalAmount_019e98ec-82bf-7a54-b02e-dd2eb9123e11" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/FairValueMeasurementsScheduleofFairValueofSeniorNotesDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#FairValueMeasurementsScheduleofFairValueofSeniorNotesDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/FairValueMeasurementsScheduleofFairValueofSeniorNotesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-712f-85b6-b7cf543b932a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-76a3-b073-a2b429ce57a0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-712f-85b6-b7cf543b932a" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-76a3-b073-a2b429ce57a0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-713a-8479-652fc1300922" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-76a3-b073-a2b429ce57a0" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-713a-8479-652fc1300922" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-713a-8479-652fc1300922_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-713a-8479-652fc1300922" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-713a-8479-652fc1300922_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-70ec-9636-edda4d10c4ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-713a-8479-652fc1300922" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-70ec-9636-edda4d10c4ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SeniorNotes3850DueJanuary2030Member_019e98ec-82bf-7a9d-a61a-775d293ffe58" xlink:href="shus-20260630.xsd#shus_SeniorNotes3850DueJanuary2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-70ec-9636-edda4d10c4ae" xlink:to="loc_shus_SeniorNotes3850DueJanuary2030Member_019e98ec-82bf-7a9d-a61a-775d293ffe58" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SeniorNotes2500DueJanuary2031Member_019e98ec-82bf-707e-940d-93e6cd956537" xlink:href="shus-20260630.xsd#shus_SeniorNotes2500DueJanuary2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-70ec-9636-edda4d10c4ae" xlink:to="loc_shus_SeniorNotes2500DueJanuary2031Member_019e98ec-82bf-707e-940d-93e6cd956537" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SeniorNotes6000DueJanuary2043Member_019e98ec-82bf-718c-a60e-d421d702cbc1" xlink:href="shus-20260630.xsd#shus_SeniorNotes6000DueJanuary2043Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-70ec-9636-edda4d10c4ae" xlink:to="loc_shus_SeniorNotes6000DueJanuary2043Member_019e98ec-82bf-718c-a60e-d421d702cbc1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SeniorNotes3966DueAugust2061Member_019e98ec-82bf-7702-b838-7642727e0e95" xlink:href="shus-20260630.xsd#shus_SeniorNotes3966DueAugust2061Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-70ec-9636-edda4d10c4ae" xlink:to="loc_shus_SeniorNotes3966DueAugust2061Member_019e98ec-82bf-7702-b838-7642727e0e95" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019e98ec-82bf-79e1-9eb2-35019d0f988b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e98ec-82bf-76a3-b073-a2b429ce57a0" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019e98ec-82bf-79e1-9eb2-35019d0f988b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e98ec-82bf-79e1-9eb2-35019d0f988b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019e98ec-82bf-79e1-9eb2-35019d0f988b" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e98ec-82bf-79e1-9eb2-35019d0f988b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e98ec-82bf-7cd3-bc81-49f197ec5b89" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019e98ec-82bf-79e1-9eb2-35019d0f988b" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e98ec-82bf-7cd3-bc81-49f197ec5b89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e98ec-82bf-7e98-9317-d87bbfa1037d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e98ec-82bf-7cd3-bc81-49f197ec5b89" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e98ec-82bf-7e98-9317-d87bbfa1037d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019e98ec-82bf-7668-b630-410ccb67a287" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e98ec-82bf-7e98-9317-d87bbfa1037d" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019e98ec-82bf-7668-b630-410ccb67a287" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019e98ec-82bf-7f07-81d1-0b65431cba54" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e98ec-82bf-7e98-9317-d87bbfa1037d" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019e98ec-82bf-7f07-81d1-0b65431cba54" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019e98ec-82bf-74b7-9a18-6a6dd696958b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-712f-85b6-b7cf543b932a" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019e98ec-82bf-74b7-9a18-6a6dd696958b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e98ec-82bf-7358-9a88-eba8fe39cfc3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-712f-85b6-b7cf543b932a" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e98ec-82bf-7358-9a88-eba8fe39cfc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019e98ec-82bf-7a72-ac1d-94a27f5ea616" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-712f-85b6-b7cf543b932a" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019e98ec-82bf-7a72-ac1d-94a27f5ea616" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_019e98ec-82bf-75c2-8bb6-145b6a371e7b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e98ec-82bf-712f-85b6-b7cf543b932a" xlink:to="loc_us-gaap_DebtInstrumentFairValue_019e98ec-82bf-75c2-8bb6-145b6a371e7b" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/InventoriesScheduleofInventoryDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#InventoriesScheduleofInventoryDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/InventoriesScheduleofInventoryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryLineItems_019e98ec-82bf-79e5-a2f7-7341b674e11e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-710f-b552-1da830e843be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryCurrentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-79e5-a2f7-7341b674e11e" xlink:to="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-710f-b552-1da830e843be" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-72e4-8f7e-51c6d1ade778" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-710f-b552-1da830e843be" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-72e4-8f7e-51c6d1ade778" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-72e4-8f7e-51c6d1ade778_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-72e4-8f7e-51c6d1ade778" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-72e4-8f7e-51c6d1ade778_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7c59-b044-6aee1bdc70ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-72e4-8f7e-51c6d1ade778" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7c59-b044-6aee1bdc70ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-7781-91be-b0e4ce5eed83" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7c59-b044-6aee1bdc70ef" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-7781-91be-b0e4ce5eed83" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7bb3-ad37-388df97b03c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-710f-b552-1da830e843be" xlink:to="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7bb3-ad37-388df97b03c7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7bb3-ad37-388df97b03c7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7bb3-ad37-388df97b03c7" xlink:to="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7bb3-ad37-388df97b03c7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-770a-9d09-5c798de0c2d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7bb3-ad37-388df97b03c7" xlink:to="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-770a-9d09-5c798de0c2d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_PacificNorthwestOperatingSegmentMember_019e98ec-82bf-7a4d-8033-50bcc907d90a" xlink:href="shus-20260630.xsd#shus_PacificNorthwestOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-770a-9d09-5c798de0c2d7" xlink:to="loc_shus_PacificNorthwestOperatingSegmentMember_019e98ec-82bf-7a4d-8033-50bcc907d90a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_CaliforniaOperatingSegmentMember_019e98ec-82bf-71a1-8982-15a6f4611115" xlink:href="shus-20260630.xsd#shus_CaliforniaOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-770a-9d09-5c798de0c2d7" xlink:to="loc_shus_CaliforniaOperatingSegmentMember_019e98ec-82bf-71a1-8982-15a6f4611115" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_DesertOperatingSegmentMember_019e98ec-82bf-7db2-8204-a290baf0f220" xlink:href="shus-20260630.xsd#shus_DesertOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-770a-9d09-5c798de0c2d7" xlink:to="loc_shus_DesertOperatingSegmentMember_019e98ec-82bf-7db2-8204-a290baf0f220" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_MountainOperatingSegmentMember_019e98ec-82bf-77d4-ac3b-70bfee05ee46" xlink:href="shus-20260630.xsd#shus_MountainOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-770a-9d09-5c798de0c2d7" xlink:to="loc_shus_MountainOperatingSegmentMember_019e98ec-82bf-77d4-ac3b-70bfee05ee46" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_TexasOperatingSegmentMember_019e98ec-82bf-7f0b-965e-423c70466e73" xlink:href="shus-20260630.xsd#shus_TexasOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-770a-9d09-5c798de0c2d7" xlink:to="loc_shus_TexasOperatingSegmentMember_019e98ec-82bf-7f0b-965e-423c70466e73" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_EastOperatingSegmentMember_019e98ec-82bf-76c4-85d0-722da6c74cc5" xlink:href="shus-20260630.xsd#shus_EastOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-770a-9d09-5c798de0c2d7" xlink:to="loc_shus_EastOperatingSegmentMember_019e98ec-82bf-76c4-85d0-722da6c74cc5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryHomesUnderConstruction_019e98ec-82bf-7aa8-8513-7784d9baad94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryHomesUnderConstruction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-79e5-a2f7-7341b674e11e" xlink:to="loc_us-gaap_InventoryHomesUnderConstruction_019e98ec-82bf-7aa8-8513-7784d9baad94" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts_019e98ec-82bf-7518-8535-12da09dcccb0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-79e5-a2f7-7341b674e11e" xlink:to="loc_us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts_019e98ec-82bf-7518-8535-12da09dcccb0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryLandHeldForSale_019e98ec-82bf-7eca-88c7-5fe836be2ec8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryLandHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-79e5-a2f7-7341b674e11e" xlink:to="loc_us-gaap_InventoryLandHeldForSale_019e98ec-82bf-7eca-88c7-5fe836be2ec8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019e98ec-82bf-732e-ac5b-455a05c124f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-79e5-a2f7-7341b674e11e" xlink:to="loc_us-gaap_InventoryNet_019e98ec-82bf-732e-ac5b-455a05c124f1" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/InventoriesScheduleofInventoryImpairmentsDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#InventoriesScheduleofInventoryImpairmentsDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/InventoriesScheduleofInventoryImpairmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryLineItems_019e98ec-82bf-7941-b39a-6b972c5a185e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-76b6-bbe5-950dcf86d9b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryCurrentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-7941-b39a-6b972c5a185e" xlink:to="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-76b6-bbe5-950dcf86d9b1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesInventoryAxis_019e98ec-82bf-79c7-869f-3756b874ab51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PublicUtilitiesInventoryAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-76b6-bbe5-950dcf86d9b1" xlink:to="loc_us-gaap_PublicUtilitiesInventoryAxis_019e98ec-82bf-79c7-869f-3756b874ab51" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e98ec-82bf-79c7-869f-3756b874ab51_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_019e98ec-82bf-79c7-869f-3756b874ab51" xlink:to="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e98ec-82bf-79c7-869f-3756b874ab51_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e98ec-82bf-7fcc-96e8-824c9a1afe7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_019e98ec-82bf-79c7-869f-3756b874ab51" xlink:to="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e98ec-82bf-7fcc-96e8-824c9a1afe7d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HousingCompletedOrUnderConstructionMember_019e98ec-82bf-785b-a7e7-02fe654c2333" xlink:href="shus-20260630.xsd#shus_HousingCompletedOrUnderConstructionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e98ec-82bf-7fcc-96e8-824c9a1afe7d" xlink:to="loc_shus_HousingCompletedOrUnderConstructionMember_019e98ec-82bf-785b-a7e7-02fe654c2333" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_LandAndLandUnderDevelopmentMember_019e98ec-82bf-77c7-9a6e-b77cc4182f2f" xlink:href="shus-20260630.xsd#shus_LandAndLandUnderDevelopmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e98ec-82bf-7fcc-96e8-824c9a1afe7d" xlink:to="loc_shus_LandAndLandUnderDevelopmentMember_019e98ec-82bf-77c7-9a6e-b77cc4182f2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7fcf-b497-9394a7d165e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-76b6-bbe5-950dcf86d9b1" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7fcf-b497-9394a7d165e8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7fcf-b497-9394a7d165e8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7fcf-b497-9394a7d165e8" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7fcf-b497-9394a7d165e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7a68-8295-a4cafdd943d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7fcf-b497-9394a7d165e8" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7a68-8295-a4cafdd943d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-7ff0-82e6-97934fba6283" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7a68-8295-a4cafdd943d2" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-7ff0-82e6-97934fba6283" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7f30-acc5-9bf45dc6a3b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-76b6-bbe5-950dcf86d9b1" xlink:to="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7f30-acc5-9bf45dc6a3b9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f30-acc5-9bf45dc6a3b9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7f30-acc5-9bf45dc6a3b9" xlink:to="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7f30-acc5-9bf45dc6a3b9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7220-9605-8d7b5f83c76c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsegmentsAxis_019e98ec-82bf-7f30-acc5-9bf45dc6a3b9" xlink:to="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7220-9605-8d7b5f83c76c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_PacificNorthwestOperatingSegmentMember_019e98ec-82bf-7242-ab90-56c7b7456570" xlink:href="shus-20260630.xsd#shus_PacificNorthwestOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7220-9605-8d7b5f83c76c" xlink:to="loc_shus_PacificNorthwestOperatingSegmentMember_019e98ec-82bf-7242-ab90-56c7b7456570" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_CaliforniaOperatingSegmentMember_019e98ec-82bf-7bd2-a1e0-6496dc6da0f2" xlink:href="shus-20260630.xsd#shus_CaliforniaOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7220-9605-8d7b5f83c76c" xlink:to="loc_shus_CaliforniaOperatingSegmentMember_019e98ec-82bf-7bd2-a1e0-6496dc6da0f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_DesertOperatingSegmentMember_019e98ec-82bf-7dc3-a345-d31d2118b5cc" xlink:href="shus-20260630.xsd#shus_DesertOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7220-9605-8d7b5f83c76c" xlink:to="loc_shus_DesertOperatingSegmentMember_019e98ec-82bf-7dc3-a345-d31d2118b5cc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_MountainOperatingSegmentMember_019e98ec-82bf-72db-b8d6-cf595565d8a2" xlink:href="shus-20260630.xsd#shus_MountainOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7220-9605-8d7b5f83c76c" xlink:to="loc_shus_MountainOperatingSegmentMember_019e98ec-82bf-72db-b8d6-cf595565d8a2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_TexasOperatingSegmentMember_019e98ec-82bf-71ca-bebf-9aa7ab73c947" xlink:href="shus-20260630.xsd#shus_TexasOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7220-9605-8d7b5f83c76c" xlink:to="loc_shus_TexasOperatingSegmentMember_019e98ec-82bf-71ca-bebf-9aa7ab73c947" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_EastOperatingSegmentMember_019e98ec-82bf-7eb7-9a35-991e6711c096" xlink:href="shus-20260630.xsd#shus_EastOperatingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_019e98ec-82bf-7220-9605-8d7b5f83c76c" xlink:to="loc_shus_EastOperatingSegmentMember_019e98ec-82bf-7eb7-9a35-991e6711c096" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_019e98ec-82bf-75c7-a6d6-c07d998ddb99" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-7941-b39a-6b972c5a185e" xlink:to="loc_us-gaap_InventoryWriteDown_019e98ec-82bf-75c7-a6d6-c07d998ddb99" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/InventoriesFairValueofImpairedInventoryDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#InventoriesFairValueofImpairedInventoryDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/InventoriesFairValueofImpairedInventoryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryLineItems_019e98ec-82bf-70a9-9c69-2b8b87f66454" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-7c6d-ac9f-8e532a587f26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryCurrentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-70a9-9c69-2b8b87f66454" xlink:to="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-7c6d-ac9f-8e532a587f26" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e98ec-82bf-799c-9b6e-67ca74f4a14f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_019e98ec-82bf-7c6d-ac9f-8e532a587f26" xlink:to="loc_srt_RangeAxis_019e98ec-82bf-799c-9b6e-67ca74f4a14f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e98ec-82bf-799c-9b6e-67ca74f4a14f_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e98ec-82bf-799c-9b6e-67ca74f4a14f" xlink:to="loc_srt_RangeMember_019e98ec-82bf-799c-9b6e-67ca74f4a14f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e98ec-82bf-7afa-9951-4e4046b6d88f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e98ec-82bf-799c-9b6e-67ca74f4a14f" xlink:to="loc_srt_RangeMember_019e98ec-82bf-7afa-9951-4e4046b6d88f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e98ec-82bf-74a7-95d6-978d25e14f45" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e98ec-82bf-7afa-9951-4e4046b6d88f" xlink:to="loc_srt_MinimumMember_019e98ec-82bf-74a7-95d6-978d25e14f45" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e98ec-82bf-7787-be53-5bfe39d23f0b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e98ec-82bf-7afa-9951-4e4046b6d88f" xlink:to="loc_srt_MaximumMember_019e98ec-82bf-7787-be53-5bfe39d23f0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_NumberOfSubdivisionTested_019e98ec-82bf-719c-b22f-1cfbcb9aae2e" xlink:href="shus-20260630.xsd#shus_NumberOfSubdivisionTested"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-70a9-9c69-2b8b87f66454" xlink:to="loc_shus_NumberOfSubdivisionTested_019e98ec-82bf-719c-b22f-1cfbcb9aae2e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_019e98ec-82bf-79aa-ba73-de2e952f1ed3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-70a9-9c69-2b8b87f66454" xlink:to="loc_us-gaap_InventoryWriteDown_019e98ec-82bf-79aa-ba73-de2e952f1ed3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FairValueOfInventoryAfterImpairmentsDuringPeriod_019e98ec-82bf-79ed-b553-b17e22c5ee1a" xlink:href="shus-20260630.xsd#shus_FairValueOfInventoryAfterImpairmentsDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-70a9-9c69-2b8b87f66454" xlink:to="loc_shus_FairValueOfInventoryAfterImpairmentsDuringPeriod_019e98ec-82bf-79ed-b553-b17e22c5ee1a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_QuantitativeDataFairValueOfDiscountRate_019e98ec-82bf-797f-b21d-7abbb5d2e5d7" xlink:href="shus-20260630.xsd#shus_QuantitativeDataFairValueOfDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_019e98ec-82bf-70a9-9c69-2b8b87f66454" xlink:to="loc_shus_QuantitativeDataFairValueOfDiscountRate_019e98ec-82bf-797f-b21d-7abbb5d2e5d7" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/HomebuildingPrepaidsandOtherAssetsDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#HomebuildingPrepaidsandOtherAssetsDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/HomebuildingPrepaidsandOtherAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_shus_ScheduleOfPrepaidExpensesAndOtherAssetsLineItems_019e98ec-82bf-78e6-90af-7989aa0faab8" xlink:href="shus-20260630.xsd#shus_ScheduleOfPrepaidExpensesAndOtherAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ScheduleOfPrepaidExpenseAndOtherAssetsTable_019e98ec-82bf-78e6-8330-4f8822a75846" xlink:href="shus-20260630.xsd#shus_ScheduleOfPrepaidExpenseAndOtherAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_shus_ScheduleOfPrepaidExpensesAndOtherAssetsLineItems_019e98ec-82bf-78e6-90af-7989aa0faab8" xlink:to="loc_shus_ScheduleOfPrepaidExpenseAndOtherAssetsTable_019e98ec-82bf-78e6-8330-4f8822a75846" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-77c9-939b-f029fc072cef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_shus_ScheduleOfPrepaidExpenseAndOtherAssetsTable_019e98ec-82bf-78e6-8330-4f8822a75846" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-77c9-939b-f029fc072cef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-77c9-939b-f029fc072cef_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-77c9-939b-f029fc072cef" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-77c9-939b-f029fc072cef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7d87-9e4c-3018a750d401" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-77c9-939b-f029fc072cef" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7d87-9e4c-3018a750d401" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-76fd-89f0-8f9e8995cd21" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7d87-9e4c-3018a750d401" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-76fd-89f0-8f9e8995cd21" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_LandOptionDeposits_019e98ec-82bf-7046-887f-6730d0d7001b" xlink:href="shus-20260630.xsd#shus_LandOptionDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_shus_ScheduleOfPrepaidExpensesAndOtherAssetsLineItems_019e98ec-82bf-78e6-90af-7989aa0faab8" xlink:to="loc_shus_LandOptionDeposits_019e98ec-82bf-7046-887f-6730d0d7001b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019e98ec-82bf-74e9-a982-167833b1fc32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_shus_ScheduleOfPrepaidExpensesAndOtherAssetsLineItems_019e98ec-82bf-78e6-90af-7989aa0faab8" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019e98ec-82bf-74e9-a982-167833b1fc32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrentAndNoncurrent_019e98ec-82bf-7797-ae42-b0e1806b12a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_shus_ScheduleOfPrepaidExpensesAndOtherAssetsLineItems_019e98ec-82bf-78e6-90af-7989aa0faab8" xlink:to="loc_us-gaap_PrepaidExpenseCurrentAndNoncurrent_019e98ec-82bf-7797-ae42-b0e1806b12a7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredOfferingCosts_019e98ec-82bf-797c-88fb-c34ecc439d4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredOfferingCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_shus_ScheduleOfPrepaidExpensesAndOtherAssetsLineItems_019e98ec-82bf-78e6-90af-7989aa0faab8" xlink:to="loc_us-gaap_DeferredOfferingCosts_019e98ec-82bf-797c-88fb-c34ecc439d4f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_019e98ec-82bf-724d-aa8c-8a2d7f446ee1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_shus_ScheduleOfPrepaidExpensesAndOtherAssetsLineItems_019e98ec-82bf-78e6-90af-7989aa0faab8" xlink:to="loc_us-gaap_OtherAssetsCurrent_019e98ec-82bf-724d-aa8c-8a2d7f446ee1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_019e98ec-82bf-722c-84c9-f4317c5f8d13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_shus_ScheduleOfPrepaidExpensesAndOtherAssetsLineItems_019e98ec-82bf-78e6-90af-7989aa0faab8" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_019e98ec-82bf-722c-84c9-f4317c5f8d13" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/HomebuildingAccruedandOtherLiabilitiesandFinancialServicesAccountsPayableandAccruedLiabilitiesScheduleofAccruedLiabilitiesDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#HomebuildingAccruedandOtherLiabilitiesandFinancialServicesAccountsPayableandAccruedLiabilitiesScheduleofAccruedLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/HomebuildingAccruedandOtherLiabilitiesandFinancialServicesAccountsPayableandAccruedLiabilitiesScheduleofAccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-79c6-83ad-6549416c2d57" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-79c6-83ad-6549416c2d57" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7703-a3a7-44fa3442dc8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-79c6-83ad-6549416c2d57" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7703-a3a7-44fa3442dc8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7703-a3a7-44fa3442dc8c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7703-a3a7-44fa3442dc8c" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7703-a3a7-44fa3442dc8c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7c5e-a7c1-e9e5823e1d72" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7703-a3a7-44fa3442dc8c" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7c5e-a7c1-e9e5823e1d72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-77ba-b673-2902925a450f" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7c5e-a7c1-e9e5823e1d72" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-77ba-b673-2902925a450f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_019e98ec-82bf-7ffb-ae74-5d7b86a16adc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_019e98ec-82bf-7ffb-ae74-5d7b86a16adc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_019e98ec-82bf-7641-acfe-0390ee829b00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_us-gaap_ContractWithCustomerLiability_019e98ec-82bf-7641-acfe-0390ee829b00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrual_019e98ec-82bf-7065-b50a-099902710eab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProductWarrantyAccrual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_us-gaap_ProductWarrantyAccrual_019e98ec-82bf-7065-b50a-099902710eab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_019e98ec-82bf-7429-8caf-15fb7ec1d8f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_us-gaap_OperatingLeaseLiability_019e98ec-82bf-7429-8caf-15fb7ec1d8f6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_LandDevelopmentAndHomeConstructionAccruals_019e98ec-82bf-7231-8e7e-99f86af157f9" xlink:href="shus-20260630.xsd#shus_LandDevelopmentAndHomeConstructionAccruals"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_shus_LandDevelopmentAndHomeConstructionAccruals_019e98ec-82bf-7231-8e7e-99f86af157f9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_019e98ec-82bf-7fb3-b33d-14d44d37be15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_us-gaap_InterestPayableCurrentAndNoncurrent_019e98ec-82bf-7fb3-b33d-14d44d37be15" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxes_019e98ec-82bf-7f11-8f35-7968d2df2df5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_us-gaap_AccruedIncomeTaxes_019e98ec-82bf-7f11-8f35-7968d2df2df5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SelfInsuredRetentionForConstructionDefectClaims_019e98ec-82bf-7e7e-b893-e8435ba7a886" xlink:href="shus-20260630.xsd#shus_SelfInsuredRetentionForConstructionDefectClaims"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_shus_SelfInsuredRetentionForConstructionDefectClaims_019e98ec-82bf-7e7e-b893-e8435ba7a886" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_RetentionsPayable_019e98ec-82bf-77e9-8d2a-38eedddce0a5" xlink:href="shus-20260630.xsd#shus_RetentionsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_shus_RetentionsPayable_019e98ec-82bf-77e9-8d2a-38eedddce0a5" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent_019e98ec-82bf-7e86-a2a9-7d152b9c5008" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent_019e98ec-82bf-7e86-a2a9-7d152b9c5008" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_019e98ec-82bf-77c8-b31d-d7449a5d7540" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-743e-a71f-f4a35bc21cf0" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_019e98ec-82bf-77c8-b31d-d7449a5d7540" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/HomebuildingAccruedandOtherLiabilitiesandFinancialServicesAccountsPayableandAccruedLiabilitiesScheduleofAccountsPayableandAccruedLiabilitiesDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#HomebuildingAccruedandOtherLiabilitiesandFinancialServicesAccountsPayableandAccruedLiabilitiesScheduleofAccountsPayableandAccruedLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/HomebuildingAccruedandOtherLiabilitiesandFinancialServicesAccountsPayableandAccruedLiabilitiesScheduleofAccountsPayableandAccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7bcd-b12f-716d2e923e35" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7248-8a63-abcbf39612be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7bcd-b12f-716d2e923e35" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7248-8a63-abcbf39612be" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-73ce-8694-3ff505bd76bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e98ec-82bf-7248-8a63-abcbf39612be" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-73ce-8694-3ff505bd76bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-73ce-8694-3ff505bd76bc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-73ce-8694-3ff505bd76bc" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-73ce-8694-3ff505bd76bc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7d5b-bdd4-f720154fdda8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-73ce-8694-3ff505bd76bc" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7d5b-bdd4-f720154fdda8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-763b-b44d-6e97f704aedf" xlink:href="shus-20260630.xsd#shus_FinancialServicesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7d5b-bdd4-f720154fdda8" xlink:to="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-763b-b44d-6e97f704aedf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SelfInsuranceReserve_019e98ec-82bf-7ec6-aea5-f13253b2abeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SelfInsuranceReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7bcd-b12f-716d2e923e35" xlink:to="loc_us-gaap_SelfInsuranceReserve_019e98ec-82bf-7ec6-aea5-f13253b2abeb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilities_019e98ec-82bf-720b-8ce0-2259eaa6fca0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableAndOtherAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7bcd-b12f-716d2e923e35" xlink:to="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilities_019e98ec-82bf-720b-8ce0-2259eaa6fca0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_019e98ec-82bf-7972-b51e-9dd1196c9742" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e98ec-82bf-7bcd-b12f-716d2e923e35" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_019e98ec-82bf-7972-b51e-9dd1196c9742" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/WarrantyAccrualNarrativeDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#WarrantyAccrualNarrativeDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/WarrantyAccrualNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyLiabilityLineItems_019e98ec-82bf-757c-acb2-e1a2e17c4662" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProductWarrantyLiabilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyLiabilityTable_019e98ec-82bf-749e-b9b9-e0680698dc33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProductWarrantyLiabilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ProductWarrantyLiabilityLineItems_019e98ec-82bf-757c-acb2-e1a2e17c4662" xlink:to="loc_us-gaap_ProductWarrantyLiabilityTable_019e98ec-82bf-749e-b9b9-e0680698dc33" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e98ec-82bf-71ae-b88f-9a502f80ecf4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ProductWarrantyLiabilityTable_019e98ec-82bf-749e-b9b9-e0680698dc33" xlink:to="loc_srt_RangeAxis_019e98ec-82bf-71ae-b88f-9a502f80ecf4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e98ec-82bf-71ae-b88f-9a502f80ecf4_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e98ec-82bf-71ae-b88f-9a502f80ecf4" xlink:to="loc_srt_RangeMember_019e98ec-82bf-71ae-b88f-9a502f80ecf4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e98ec-82bf-727d-a883-02baebaeff7d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e98ec-82bf-71ae-b88f-9a502f80ecf4" xlink:to="loc_srt_RangeMember_019e98ec-82bf-727d-a883-02baebaeff7d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e98ec-82bf-7f65-be86-4563ee0f7a3e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e98ec-82bf-727d-a883-02baebaeff7d" xlink:to="loc_srt_MinimumMember_019e98ec-82bf-7f65-be86-4563ee0f7a3e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_WarrantyPeriodResponsibleForPerformingAllWork_019e98ec-82bf-740e-ba96-aeaeb3fd28ba" xlink:href="shus-20260630.xsd#shus_WarrantyPeriodResponsibleForPerformingAllWork"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantyLiabilityLineItems_019e98ec-82bf-757c-acb2-e1a2e17c4662" xlink:to="loc_shus_WarrantyPeriodResponsibleForPerformingAllWork_019e98ec-82bf-740e-ba96-aeaeb3fd28ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_WarrantyPeriodResponsibleForPayingForSubstantiallyAllWorkRequired_019e98ec-82bf-7eda-862c-7325c0df08bd" xlink:href="shus-20260630.xsd#shus_WarrantyPeriodResponsibleForPayingForSubstantiallyAllWorkRequired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantyLiabilityLineItems_019e98ec-82bf-757c-acb2-e1a2e17c4662" xlink:to="loc_shus_WarrantyPeriodResponsibleForPayingForSubstantiallyAllWorkRequired_019e98ec-82bf-7eda-862c-7325c0df08bd" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/InsuranceandConstructionDefectClaimReservesScheduleofWoodsideDefectClaimReserveActivityUndertheThirdPartyInsuranceDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#InsuranceandConstructionDefectClaimReservesScheduleofWoodsideDefectClaimReserveActivityUndertheThirdPartyInsuranceDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/InsuranceandConstructionDefectClaimReservesScheduleofWoodsideDefectClaimReserveActivityUndertheThirdPartyInsuranceDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessInterruptionLossLineItems_019e98ec-82bf-7145-8818-d4e6de93167c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessInterruptionLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessInsuranceRecoveriesTable_019e98ec-82bf-73ab-baf7-60320e8cf4b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessInsuranceRecoveriesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessInterruptionLossLineItems_019e98ec-82bf-7145-8818-d4e6de93167c" xlink:to="loc_us-gaap_ScheduleOfBusinessInsuranceRecoveriesTable_019e98ec-82bf-73ab-baf7-60320e8cf4b9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019e98ec-82bf-7c5c-9023-3c14b760d4d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessInsuranceRecoveriesTable_019e98ec-82bf-73ab-baf7-60320e8cf4b9" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019e98ec-82bf-7c5c-9023-3c14b760d4d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-7c5c-9023-3c14b760d4d1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e98ec-82bf-7c5c-9023-3c14b760d4d1" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-7c5c-9023-3c14b760d4d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-7772-8db7-5e01280fdb07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e98ec-82bf-7c5c-9023-3c14b760d4d1" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-7772-8db7-5e01280fdb07" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_WoodsideHomesCompanyLLCMember_019e98ec-82bf-7af6-b0c6-5301d6ef356c" xlink:href="shus-20260630.xsd#shus_WoodsideHomesCompanyLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-7772-8db7-5e01280fdb07" xlink:to="loc_shus_WoodsideHomesCompanyLLCMember_019e98ec-82bf-7af6-b0c6-5301d6ef356c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitRollForward_019e98ec-82bf-71d4-a498-083c20b25f59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessInterruptionLossLineItems_019e98ec-82bf-7145-8818-d4e6de93167c" xlink:to="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitRollForward_019e98ec-82bf-71d4-a498-083c20b25f59" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitOriginalDiscountRateBeforeCashFlowAndReinsurance_019e98ec-82bf-7845-b634-9cb2feadb83b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitOriginalDiscountRateBeforeCashFlowAndReinsurance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitRollForward_019e98ec-82bf-71d4-a498-083c20b25f59" xlink:to="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitOriginalDiscountRateBeforeCashFlowAndReinsurance_019e98ec-82bf-7845-b634-9cb2feadb83b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitInterestExpense_019e98ec-82bf-72b8-afee-40f7d9753a9f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitRollForward_019e98ec-82bf-71d4-a498-083c20b25f59" xlink:to="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitInterestExpense_019e98ec-82bf-72b8-afee-40f7d9753a9f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForFuturePolicyBenefitsPaymentForBenefits_019e98ec-82bf-75b5-8bbe-d74d75684392" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilityForFuturePolicyBenefitsPaymentForBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitRollForward_019e98ec-82bf-71d4-a498-083c20b25f59" xlink:to="loc_us-gaap_LiabilityForFuturePolicyBenefitsPaymentForBenefits_019e98ec-82bf-75b5-8bbe-d74d75684392" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitIncreaseDecreaseForOtherChange_019e98ec-82bf-7d60-be54-0b26810e0cea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitIncreaseDecreaseForOtherChange"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitRollForward_019e98ec-82bf-71d4-a498-083c20b25f59" xlink:to="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitIncreaseDecreaseForOtherChange_019e98ec-82bf-7d60-be54-0b26810e0cea" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitOriginalDiscountRateBeforeCashFlowAndReinsurance_019e98ec-82bf-76b9-b2f3-388a46ad2e5d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitOriginalDiscountRateBeforeCashFlowAndReinsurance"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/SeniorNotesandNotesPayableScheduleofDebtDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#SeniorNotesandNotesPayableScheduleofDebtDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/SeniorNotesandNotesPayableScheduleofDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-7b5a-a5c0-9cbc1c97089b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e98ec-82bf-76b5-93b1-1a783bf79c0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-7b5a-a5c0-9cbc1c97089b" xlink:to="loc_us-gaap_DebtInstrumentTable_019e98ec-82bf-76b5-93b1-1a783bf79c0b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-7ca6-bc69-65997bfe3549" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e98ec-82bf-76b5-93b1-1a783bf79c0b" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-7ca6-bc69-65997bfe3549" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7ca6-bc69-65997bfe3549_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-7ca6-bc69-65997bfe3549" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7ca6-bc69-65997bfe3549_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7e78-8a04-e05de270e199" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-7ca6-bc69-65997bfe3549" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7e78-8a04-e05de270e199" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SeniorNotes3850DueJanuary2030Member_019e98ec-82bf-7433-948c-dbccb79d102a" xlink:href="shus-20260630.xsd#shus_SeniorNotes3850DueJanuary2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7e78-8a04-e05de270e199" xlink:to="loc_shus_SeniorNotes3850DueJanuary2030Member_019e98ec-82bf-7433-948c-dbccb79d102a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SeniorNotes2500DueJanuary2031Member_019e98ec-82bf-7f8e-9335-749fe04fff15" xlink:href="shus-20260630.xsd#shus_SeniorNotes2500DueJanuary2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7e78-8a04-e05de270e199" xlink:to="loc_shus_SeniorNotes2500DueJanuary2031Member_019e98ec-82bf-7f8e-9335-749fe04fff15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SeniorNotes6000DueJanuary2043Member_019e98ec-82bf-7b0c-a1a0-df5ce8121fba" xlink:href="shus-20260630.xsd#shus_SeniorNotes6000DueJanuary2043Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7e78-8a04-e05de270e199" xlink:to="loc_shus_SeniorNotes6000DueJanuary2043Member_019e98ec-82bf-7b0c-a1a0-df5ce8121fba" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SeniorNotes3966DueAugust2061Member_019e98ec-82bf-7b5f-94d7-291aa9ad1b80" xlink:href="shus-20260630.xsd#shus_SeniorNotes3966DueAugust2061Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7e78-8a04-e05de270e199" xlink:to="loc_shus_SeniorNotes3966DueAugust2061Member_019e98ec-82bf-7b5f-94d7-291aa9ad1b80" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e98ec-82bf-7440-9b13-a8c2f412d0e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-7b5a-a5c0-9cbc1c97089b" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e98ec-82bf-7440-9b13-a8c2f412d0e5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019e98ec-82bf-74a7-8877-fbb85b6de918" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-7b5a-a5c0-9cbc1c97089b" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019e98ec-82bf-74a7-8877-fbb85b6de918" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/SeniorNotesandNotesPayableNarrativeDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#SeniorNotesandNotesPayableNarrativeDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/SeniorNotesandNotesPayableNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-73a3-926f-2783b9f75e7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e98ec-82bf-7099-841a-93c5b92d9d5e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-73a3-926f-2783b9f75e7d" xlink:to="loc_us-gaap_DebtInstrumentTable_019e98ec-82bf-7099-841a-93c5b92d9d5e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-775c-944d-531c22585ab4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e98ec-82bf-7099-841a-93c5b92d9d5e" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-775c-944d-531c22585ab4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-775c-944d-531c22585ab4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-775c-944d-531c22585ab4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-775c-944d-531c22585ab4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-75aa-bef9-afa5c84a5074" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-775c-944d-531c22585ab4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-75aa-bef9-afa5c84a5074" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_WoodsideNoteMember_019e98ec-82bf-7ff5-aed5-d0fd45fcc5eb" xlink:href="shus-20260630.xsd#shus_WoodsideNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-75aa-bef9-afa5c84a5074" xlink:to="loc_shus_WoodsideNoteMember_019e98ec-82bf-7ff5-aed5-d0fd45fcc5eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ChesmarNoteMember_019e98ec-82bf-75e1-9b11-f36b5b400511" xlink:href="shus-20260630.xsd#shus_ChesmarNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-75aa-bef9-afa5c84a5074" xlink:to="loc_shus_ChesmarNoteMember_019e98ec-82bf-75e1-9b11-f36b5b400511" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HoltNoteMember_019e98ec-82bf-77d1-8e6c-b9bd38b82d31" xlink:href="shus-20260630.xsd#shus_HoltNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-75aa-bef9-afa5c84a5074" xlink:to="loc_shus_HoltNoteMember_019e98ec-82bf-77d1-8e6c-b9bd38b82d31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_PromissoryNoteMember_019e98ec-82bf-7ae0-a0ac-1b14e37fc8eb" xlink:href="shus-20260630.xsd#shus_PromissoryNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-75aa-bef9-afa5c84a5074" xlink:to="loc_shus_PromissoryNoteMember_019e98ec-82bf-7ae0-a0ac-1b14e37fc8eb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_UnsecuredIntercompanyLoanAgreementMember_019e98ec-82bf-74d5-ba28-9a7b88345eb4" xlink:href="shus-20260630.xsd#shus_UnsecuredIntercompanyLoanAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-75aa-bef9-afa5c84a5074" xlink:to="loc_shus_UnsecuredIntercompanyLoanAgreementMember_019e98ec-82bf-74d5-ba28-9a7b88345eb4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-7360-a7e3-9555d491988d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e98ec-82bf-7099-841a-93c5b92d9d5e" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-7360-a7e3-9555d491988d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-7360-a7e3-9555d491988d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-7360-a7e3-9555d491988d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-7360-a7e3-9555d491988d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-71ce-b523-77ba2b4652c9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-7360-a7e3-9555d491988d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-71ce-b523-77ba2b4652c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableOtherPayablesMember_019e98ec-82bf-7a1e-9871-4093a94d9de5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayableOtherPayablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-71ce-b523-77ba2b4652c9" xlink:to="loc_us-gaap_NotesPayableOtherPayablesMember_019e98ec-82bf-7a1e-9871-4093a94d9de5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityAxis_019e98ec-82bf-7f5e-bee0-015e828de6d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e98ec-82bf-7099-841a-93c5b92d9d5e" xlink:to="loc_us-gaap_LineOfCreditFacilityAxis_019e98ec-82bf-7f5e-bee0-015e828de6d3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e98ec-82bf-7f5e-bee0-015e828de6d3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_019e98ec-82bf-7f5e-bee0-015e828de6d3" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e98ec-82bf-7f5e-bee0-015e828de6d3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e98ec-82bf-75b3-bb91-0de9f1ff9da5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_019e98ec-82bf-7f5e-bee0-015e828de6d3" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e98ec-82bf-75b3-bb91-0de9f1ff9da5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SumitomoMitsuiBankingCorporationMember_019e98ec-82bf-714c-98bf-773c8ad11afb" xlink:href="shus-20260630.xsd#shus_SumitomoMitsuiBankingCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e98ec-82bf-75b3-bb91-0de9f1ff9da5" xlink:to="loc_shus_SumitomoMitsuiBankingCorporationMember_019e98ec-82bf-714c-98bf-773c8ad11afb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7b4b-b05b-378cec0b5448" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e98ec-82bf-7099-841a-93c5b92d9d5e" xlink:to="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7b4b-b05b-378cec0b5448" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7b4b-b05b-378cec0b5448_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7b4b-b05b-378cec0b5448" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7b4b-b05b-378cec0b5448_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7ba5-bae4-eb107f8a74fa" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7b4b-b05b-378cec0b5448" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7ba5-bae4-eb107f8a74fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SurlandCompaniesLLCMember_019e98ec-82bf-76e5-a2f7-99e52df0be4e" xlink:href="shus-20260630.xsd#shus_SurlandCompaniesLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7ba5-bae4-eb107f8a74fa" xlink:to="loc_shus_SurlandCompaniesLLCMember_019e98ec-82bf-76e5-a2f7-99e52df0be4e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_GMEDevelopmentLLCMember_019e98ec-82bf-7685-b3b1-14db26277238" xlink:href="shus-20260630.xsd#shus_GMEDevelopmentLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7ba5-bae4-eb107f8a74fa" xlink:to="loc_shus_GMEDevelopmentLLCMember_019e98ec-82bf-7685-b3b1-14db26277238" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_WoodsideHomesCompanyLLCMember_019e98ec-82bf-7898-8c8d-a801c3ffc203" xlink:href="shus-20260630.xsd#shus_WoodsideHomesCompanyLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7ba5-bae4-eb107f8a74fa" xlink:to="loc_shus_WoodsideHomesCompanyLLCMember_019e98ec-82bf-7898-8c8d-a801c3ffc203" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7fc9-8c63-0e306bd84a4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e98ec-82bf-7099-841a-93c5b92d9d5e" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7fc9-8c63-0e306bd84a4f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-7fc9-8c63-0e306bd84a4f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7fc9-8c63-0e306bd84a4f" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-7fc9-8c63-0e306bd84a4f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-7902-ae6e-889ef6ff8c53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7fc9-8c63-0e306bd84a4f" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-7902-ae6e-889ef6ff8c53" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_019e98ec-82bf-787b-813a-6516b5c485f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-7902-ae6e-889ef6ff8c53" xlink:to="loc_us-gaap_RelatedPartyMember_019e98ec-82bf-787b-813a-6516b5c485f4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019e98ec-82bf-76cf-9434-bdb1e7e41955" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-73a3-926f-2783b9f75e7d" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019e98ec-82bf-76cf-9434-bdb1e7e41955" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e98ec-82bf-72e7-b2ca-dc0300a8ea27" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-73a3-926f-2783b9f75e7d" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e98ec-82bf-72e7-b2ca-dc0300a8ea27" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_019e98ec-82bf-7181-8222-cf1a7b1c9981" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-73a3-926f-2783b9f75e7d" xlink:to="loc_us-gaap_RepaymentsOfDebt_019e98ec-82bf-7181-8222-cf1a7b1c9981" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_019e98ec-82bf-7c4c-9932-37bc4622449c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-73a3-926f-2783b9f75e7d" xlink:to="loc_us-gaap_LineOfCredit_019e98ec-82bf-7c4c-9932-37bc4622449c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_019e98ec-82bf-7fa5-aa63-49e6c5cea2cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ExtinguishmentOfDebtAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e98ec-82bf-73a3-926f-2783b9f75e7d" xlink:to="loc_us-gaap_ExtinguishmentOfDebtAmount_019e98ec-82bf-7fa5-aa63-49e6c5cea2cd" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/CommitmentsandContingenciesDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#CommitmentsandContingenciesDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/CommitmentsandContingenciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_019e98ec-82bf-786d-90cc-0e4d614b5943" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:to="loc_us-gaap_LossContingenciesTable_019e98ec-82bf-786d-90cc-0e4d614b5943" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-765a-bd41-1038b79a7491" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_019e98ec-82bf-786d-90cc-0e4d614b5943" xlink:to="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-765a-bd41-1038b79a7491" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-765a-bd41-1038b79a7491_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-765a-bd41-1038b79a7491" xlink:to="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-765a-bd41-1038b79a7491_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7110-9b7d-2144dba443fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-765a-bd41-1038b79a7491" xlink:to="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7110-9b7d-2144dba443fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_LOCFacilityMember_019e98ec-82bf-75c2-ad97-b4dbaf12519e" xlink:href="shus-20260630.xsd#shus_LOCFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7110-9b7d-2144dba443fd" xlink:to="loc_shus_LOCFacilityMember_019e98ec-82bf-75c2-ad97-b4dbaf12519e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityAxis_019e98ec-82bf-7b40-8297-f47c8d537942" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_019e98ec-82bf-786d-90cc-0e4d614b5943" xlink:to="loc_us-gaap_LineOfCreditFacilityAxis_019e98ec-82bf-7b40-8297-f47c8d537942" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e98ec-82bf-7b40-8297-f47c8d537942_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_019e98ec-82bf-7b40-8297-f47c8d537942" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e98ec-82bf-7b40-8297-f47c8d537942_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e98ec-82bf-72e7-b5ec-8d3f9a6ebc21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_019e98ec-82bf-7b40-8297-f47c8d537942" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e98ec-82bf-72e7-b5ec-8d3f9a6ebc21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomeAmericanMember_019e98ec-82bf-7af9-878c-00a92bf47fee" xlink:href="shus-20260630.xsd#shus_HomeAmericanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e98ec-82bf-72e7-b5ec-8d3f9a6ebc21" xlink:to="loc_shus_HomeAmericanMember_019e98ec-82bf-7af9-878c-00a92bf47fee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_019e98ec-82bf-789c-b21c-d2917ef31446" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_019e98ec-82bf-786d-90cc-0e4d614b5943" xlink:to="loc_us-gaap_OtherCommitmentsAxis_019e98ec-82bf-789c-b21c-d2917ef31446" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_019e98ec-82bf-789c-b21c-d2917ef31446_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherCommitmentsAxis_019e98ec-82bf-789c-b21c-d2917ef31446" xlink:to="loc_us-gaap_OtherCommitmentsDomain_019e98ec-82bf-789c-b21c-d2917ef31446_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_019e98ec-82bf-7f30-9af0-bad9240e99cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherCommitmentsAxis_019e98ec-82bf-789c-b21c-d2917ef31446" xlink:to="loc_us-gaap_OtherCommitmentsDomain_019e98ec-82bf-7f30-9af0-bad9240e99cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_OptionContractsMember_019e98ec-82bf-7806-bf12-2ae0329b7f54" xlink:href="shus-20260630.xsd#shus_OptionContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_019e98ec-82bf-7f30-9af0-bad9240e99cd" xlink:to="loc_shus_OptionContractsMember_019e98ec-82bf-7806-bf12-2ae0329b7f54" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e98ec-82bf-7b1e-ae60-4551e8194ba9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e98ec-82bf-7b1e-ae60-4551e8194ba9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_019e98ec-82bf-7c89-b585-37af99c08c2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_019e98ec-82bf-7c89-b585-37af99c08c2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SuretyBondsOutstandingAmount_019e98ec-82bf-7217-b09f-fcc4b0be64d5" xlink:href="shus-20260630.xsd#shus_SuretyBondsOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:to="loc_shus_SuretyBondsOutstandingAmount_019e98ec-82bf-7217-b09f-fcc4b0be64d5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_EstimatedCostRelatedToBonds_019e98ec-82bf-7ec3-a623-f6f4dca1b192" xlink:href="shus-20260630.xsd#shus_EstimatedCostRelatedToBonds"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:to="loc_shus_EstimatedCostRelatedToBonds_019e98ec-82bf-7ec3-a623-f6f4dca1b192" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_EstimatedCostRelatedToLettersOfCredit_019e98ec-82bf-753e-803a-5ed28a66f97c" xlink:href="shus-20260630.xsd#shus_EstimatedCostRelatedToLettersOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:to="loc_shus_EstimatedCostRelatedToLettersOfCredit_019e98ec-82bf-753e-803a-5ed28a66f97c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_GuarantorObligationsNumberOfGuaranteesRelatedToThirdParties_019e98ec-82bf-7ed3-b84f-64c32d07ad63" xlink:href="shus-20260630.xsd#shus_GuarantorObligationsNumberOfGuaranteesRelatedToThirdParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:to="loc_shus_GuarantorObligationsNumberOfGuaranteesRelatedToThirdParties_019e98ec-82bf-7ed3-b84f-64c32d07ad63" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForLegalSettlements_019fdb71-c9fa-73c8-b3b4-3bd6102d28fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForLegalSettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:to="loc_us-gaap_PaymentsForLegalSettlements_019fdb71-c9fa-73c8-b3b4-3bd6102d28fd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Deposits_019e98ec-82bf-7ba0-8047-8f34efe0af7b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Deposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:to="loc_us-gaap_Deposits_019e98ec-82bf-7ba0-8047-8f34efe0af7b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_LotOptionContractsNumberOfLots_019e98ec-82bf-75ca-bd59-0453f3c9eb0d" xlink:href="shus-20260630.xsd#shus_LotOptionContractsNumberOfLots"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e98ec-82bf-721e-878e-bbb8e6f0f4bb" xlink:to="loc_shus_LotOptionContractsNumberOfLots_019e98ec-82bf-75ca-bd59-0453f3c9eb0d" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/LinesofCreditDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#LinesofCreditDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/LinesofCreditDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7420-aff4-ce96b6dbd769" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:to="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7420-aff4-ce96b6dbd769" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7420-aff4-ce96b6dbd769_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7420-aff4-ce96b6dbd769" xlink:to="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7420-aff4-ce96b6dbd769_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7997-92da-09ad3641845a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7420-aff4-ce96b6dbd769" xlink:to="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7997-92da-09ad3641845a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e98ec-82bf-7f56-b882-261113f91dc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7997-92da-09ad3641845a" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e98ec-82bf-7f56-b882-261113f91dc5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_019e98ec-82bf-79d5-9471-576be91e021a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7997-92da-09ad3641845a" xlink:to="loc_us-gaap_LetterOfCreditMember_019e98ec-82bf-79d5-9471-576be91e021a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_MortgageRepurchaseFacilityMember_019e98ec-82bf-72a6-ae1f-dc9f0eb191d4" xlink:href="shus-20260630.xsd#shus_MortgageRepurchaseFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7997-92da-09ad3641845a" xlink:to="loc_shus_MortgageRepurchaseFacilityMember_019e98ec-82bf-72a6-ae1f-dc9f0eb191d4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_019e98ec-82bf-7d84-ace6-a4d8d5711872" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:to="loc_us-gaap_VariableRateAxis_019e98ec-82bf-7d84-ace6-a4d8d5711872" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_019e98ec-82bf-7d84-ace6-a4d8d5711872_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_019e98ec-82bf-7d84-ace6-a4d8d5711872" xlink:to="loc_us-gaap_VariableRateDomain_019e98ec-82bf-7d84-ace6-a4d8d5711872_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_019e98ec-82bf-712d-8c13-5ea197f21d8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_019e98ec-82bf-7d84-ace6-a4d8d5711872" xlink:to="loc_us-gaap_VariableRateDomain_019e98ec-82bf-712d-8c13-5ea197f21d8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_TermSecuredOvernightFinancingRateSOFRMember_019e98ec-82bf-781a-b2a1-6d452def978c" xlink:href="shus-20260630.xsd#shus_TermSecuredOvernightFinancingRateSOFRMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_019e98ec-82bf-712d-8c13-5ea197f21d8c" xlink:to="loc_shus_TermSecuredOvernightFinancingRateSOFRMember_019e98ec-82bf-781a-b2a1-6d452def978c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_019e98ec-82bf-7c9a-b379-ee4ef46e4346" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_019e98ec-82bf-712d-8c13-5ea197f21d8c" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_019e98ec-82bf-7c9a-b379-ee4ef46e4346" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e98ec-82bf-75eb-9c76-4dc2dc4cdc2c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:to="loc_srt_RangeAxis_019e98ec-82bf-75eb-9c76-4dc2dc4cdc2c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e98ec-82bf-75eb-9c76-4dc2dc4cdc2c_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e98ec-82bf-75eb-9c76-4dc2dc4cdc2c" xlink:to="loc_srt_RangeMember_019e98ec-82bf-75eb-9c76-4dc2dc4cdc2c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e98ec-82bf-7f42-99e7-325a987a0fb4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e98ec-82bf-75eb-9c76-4dc2dc4cdc2c" xlink:to="loc_srt_RangeMember_019e98ec-82bf-7f42-99e7-325a987a0fb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e98ec-82bf-7f26-8012-e7a08344a142" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e98ec-82bf-7f42-99e7-325a987a0fb4" xlink:to="loc_srt_MinimumMember_019e98ec-82bf-7f26-8012-e7a08344a142" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e98ec-82bf-7239-811d-dcb07325be65" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e98ec-82bf-7f42-99e7-325a987a0fb4" xlink:to="loc_srt_MaximumMember_019e98ec-82bf-7239-811d-dcb07325be65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_019e98ec-82bf-7b14-a7a7-478c049b8c66" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_019e98ec-82bf-7b14-a7a7-478c049b8c66" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_019e98ec-82bf-7b14-a7a7-478c049b8c66_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_019e98ec-82bf-7b14-a7a7-478c049b8c66" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_019e98ec-82bf-7b14-a7a7-478c049b8c66_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_019e98ec-82bf-721f-87fc-eace02d69d87" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_019e98ec-82bf-7b14-a7a7-478c049b8c66" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_019e98ec-82bf-721f-87fc-eace02d69d87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarehouseAgreementBorrowingsMember_019e98ec-82bf-7de7-8861-f2e31f67a23b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarehouseAgreementBorrowingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_019e98ec-82bf-721f-87fc-eace02d69d87" xlink:to="loc_us-gaap_WarehouseAgreementBorrowingsMember_019e98ec-82bf-7de7-8861-f2e31f67a23b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7a17-87b0-fc41b4364735" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7a17-87b0-fc41b4364735" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7a17-87b0-fc41b4364735_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7a17-87b0-fc41b4364735" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7a17-87b0-fc41b4364735_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7db2-a17a-d0b29c472c30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7a17-87b0-fc41b4364735" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7db2-a17a-d0b29c472c30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-77ce-81bd-610d0bc48f53" xlink:href="shus-20260630.xsd#shus_FinancialServicesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7db2-a17a-d0b29c472c30" xlink:to="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-77ce-81bd-610d0bc48f53" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7704-9830-eb36edf7bb5f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:to="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7704-9830-eb36edf7bb5f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7704-9830-eb36edf7bb5f_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7704-9830-eb36edf7bb5f" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7704-9830-eb36edf7bb5f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-70b1-9467-5f1b1b4c7237" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7704-9830-eb36edf7bb5f" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-70b1-9467-5f1b1b4c7237" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomeAmericanAndCLMMember_019e98ec-82bf-7654-9dab-23b3920a3036" xlink:href="shus-20260630.xsd#shus_HomeAmericanAndCLMMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-70b1-9467-5f1b1b4c7237" xlink:to="loc_shus_HomeAmericanAndCLMMember_019e98ec-82bf-7654-9dab-23b3920a3036" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomeAmericanMember_019e98ec-82bf-7b4d-90f5-9884e7d72345" xlink:href="shus-20260630.xsd#shus_HomeAmericanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_shus_HomeAmericanAndCLMMember_019e98ec-82bf-7654-9dab-23b3920a3036" xlink:to="loc_shus_HomeAmericanMember_019e98ec-82bf-7b4d-90f5-9884e7d72345" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_CLMMortgageInc.Member_019e98ec-82bf-7b93-aa3b-19bbe965cb07" xlink:href="shus-20260630.xsd#shus_CLMMortgageInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_shus_HomeAmericanAndCLMMember_019e98ec-82bf-7654-9dab-23b3920a3036" xlink:to="loc_shus_CLMMortgageInc.Member_019e98ec-82bf-7b93-aa3b-19bbe965cb07" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_U.S.BankNationalAssociationMember_019e98ec-82bf-7c78-af17-8c7d4db5d3e7" xlink:href="shus-20260630.xsd#shus_U.S.BankNationalAssociationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-70b1-9467-5f1b1b4c7237" xlink:to="loc_shus_U.S.BankNationalAssociationMember_019e98ec-82bf-7c78-af17-8c7d4db5d3e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-794d-8a13-21fc432868cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-794d-8a13-21fc432868cb" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-794d-8a13-21fc432868cb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-794d-8a13-21fc432868cb" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-794d-8a13-21fc432868cb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-777d-9c69-e179d9f144d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-794d-8a13-21fc432868cb" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-777d-9c69-e179d9f144d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_CreditAgreementMember_019e98ec-82bf-7c7a-b3bf-68bf3c7eb3d3" xlink:href="shus-20260630.xsd#shus_CreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-777d-9c69-e179d9f144d3" xlink:to="loc_shus_CreditAgreementMember_019e98ec-82bf-7c7a-b3bf-68bf3c7eb3d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_WaiverAndConsentAgreementMember_019e98ec-82bf-75b8-982e-fad533863497" xlink:href="shus-20260630.xsd#shus_WaiverAndConsentAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-777d-9c69-e179d9f144d3" xlink:to="loc_shus_WaiverAndConsentAgreementMember_019e98ec-82bf-75b8-982e-fad533863497" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_IntercompanyUnsecuredRevolvingCreditAgreementMember_019e98ec-82bf-7457-8a80-26bf9d112538" xlink:href="shus-20260630.xsd#shus_IntercompanyUnsecuredRevolvingCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-777d-9c69-e179d9f144d3" xlink:to="loc_shus_IntercompanyUnsecuredRevolvingCreditAgreementMember_019e98ec-82bf-7457-8a80-26bf9d112538" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-795c-936b-449ad046877c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-795c-936b-449ad046877c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-795c-936b-449ad046877c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-795c-936b-449ad046877c" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-795c-936b-449ad046877c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-7223-9f18-afac71984e93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-795c-936b-449ad046877c" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-7223-9f18-afac71984e93" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_019e98ec-82bf-7253-a848-2730ec3a769b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-7223-9f18-afac71984e93" xlink:to="loc_us-gaap_UnsecuredDebtMember_019e98ec-82bf-7253-a848-2730ec3a769b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019e98ec-82bf-7f6c-85bf-7d9628524a9f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e98ec-82bf-7644-9d9c-29fe59d5f921" xlink:to="loc_dei_LegalEntityAxis_019e98ec-82bf-7f6c-85bf-7d9628524a9f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019e98ec-82bf-7f6c-85bf-7d9628524a9f_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019e98ec-82bf-7f6c-85bf-7d9628524a9f" xlink:to="loc_dei_EntityDomain_019e98ec-82bf-7f6c-85bf-7d9628524a9f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019e98ec-82bf-7162-a63a-99f781930c0f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019e98ec-82bf-7f6c-85bf-7d9628524a9f" xlink:to="loc_dei_EntityDomain_019e98ec-82bf-7162-a63a-99f781930c0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_WoodsideNoteMember_019e98ec-82bf-7e4f-b625-8e17cc3ec237" xlink:href="shus-20260630.xsd#shus_WoodsideNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019e98ec-82bf-7162-a63a-99f781930c0f" xlink:to="loc_shus_WoodsideNoteMember_019e98ec-82bf-7e4f-b625-8e17cc3ec237" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ChesmarNoteMember_019e98ec-82bf-7719-b713-f016141bb76f" xlink:href="shus-20260630.xsd#shus_ChesmarNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019e98ec-82bf-7162-a63a-99f781930c0f" xlink:to="loc_shus_ChesmarNoteMember_019e98ec-82bf-7719-b713-f016141bb76f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HoltNoteMember_019e98ec-82bf-75bb-b887-e3736b4bc884" xlink:href="shus-20260630.xsd#shus_HoltNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019e98ec-82bf-7162-a63a-99f781930c0f" xlink:to="loc_shus_HoltNoteMember_019e98ec-82bf-75bb-b887-e3736b4bc884" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e98ec-82bf-7f56-8bb9-233d81d68258" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e98ec-82bf-7f56-8bb9-233d81d68258" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019e98ec-82bf-7ccc-a18c-a46b9f2c5530" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019e98ec-82bf-7ccc-a18c-a46b9f2c5530" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_LineOfCreditFacilityAccordionFeatureMaximumBorrowingCapacity_019e98ec-82bf-7b04-88ec-8cfd3493e7b3" xlink:href="shus-20260630.xsd#shus_LineOfCreditFacilityAccordionFeatureMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_shus_LineOfCreditFacilityAccordionFeatureMaximumBorrowingCapacity_019e98ec-82bf-7b04-88ec-8cfd3493e7b3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019e98ec-82bf-770f-93c7-e798de2e9981" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019e98ec-82bf-770f-93c7-e798de2e9981" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_019e98ec-82bf-7a64-ab05-963b2a13dff4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_019e98ec-82bf-7a64-ab05-963b2a13dff4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_019e98ec-82bf-79e0-904f-6dd5d3e45104" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_019e98ec-82bf-79e0-904f-6dd5d3e45104" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_019e98ec-82bf-7942-a636-057007fd36ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_us-gaap_LineOfCredit_019e98ec-82bf-7942-a636-057007fd36ce" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_LineOfCreditFacilityMaximumIncreaseToBorrowingCapacity_019e98ec-82bf-7ad9-b34a-b337e0bb67aa" xlink:href="shus-20260630.xsd#shus_LineOfCreditFacilityMaximumIncreaseToBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_shus_LineOfCreditFacilityMaximumIncreaseToBorrowingCapacity_019e98ec-82bf-7ad9-b34a-b337e0bb67aa" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarehouseAgreementBorrowings_019e98ec-82bf-79eb-95de-cef85f93aab0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarehouseAgreementBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_us-gaap_WarehouseAgreementBorrowings_019e98ec-82bf-79eb-95de-cef85f93aab0" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_DebtInstrumentCovenantTangibleNetWorthRequirementMinimum_019e98ec-82bf-777f-b71b-d50ae25afad8" xlink:href="shus-20260630.xsd#shus_DebtInstrumentCovenantTangibleNetWorthRequirementMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e98ec-82bf-7cd1-a5ac-fb9a9aea1198" xlink:to="loc_shus_DebtInstrumentCovenantTangibleNetWorthRequirementMinimum_019e98ec-82bf-777f-b71b-d50ae25afad8" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/RelatedPartyTransactionsNarrativeDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#RelatedPartyTransactionsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/RelatedPartyTransactionsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7727-bcca-ef9a3a5b1558" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7727-bcca-ef9a3a5b1558" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7a45-b953-8b98cb0078f6" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7727-bcca-ef9a3a5b1558" xlink:to="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7a45-b953-8b98cb0078f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7a45-b953-8b98cb0078f6_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7a45-b953-8b98cb0078f6" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7a45-b953-8b98cb0078f6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7b48-84d4-ac8b9f99bdb5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_019e98ec-82bf-7a45-b953-8b98cb0078f6" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7b48-84d4-ac8b9f99bdb5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_WoodsideHomesCompanyLLCMember_019e98ec-82bf-71b2-afe3-6f84f51fc1f5" xlink:href="shus-20260630.xsd#shus_WoodsideHomesCompanyLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7b48-84d4-ac8b9f99bdb5" xlink:to="loc_shus_WoodsideHomesCompanyLLCMember_019e98ec-82bf-71b2-afe3-6f84f51fc1f5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SekisuiHouseLtd.Member_019e98ec-82bf-788a-9bb6-39a09aa4a4ab" xlink:href="shus-20260630.xsd#shus_SekisuiHouseLtd.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7b48-84d4-ac8b9f99bdb5" xlink:to="loc_shus_SekisuiHouseLtd.Member_019e98ec-82bf-788a-9bb6-39a09aa4a4ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_SHResidentialHoldingsLLCMember_019e98ec-82bf-7350-a217-32e701988226" xlink:href="shus-20260630.xsd#shus_SHResidentialHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e98ec-82bf-7b48-84d4-ac8b9f99bdb5" xlink:to="loc_shus_SHResidentialHoldingsLLCMember_019e98ec-82bf-7350-a217-32e701988226" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-7605-8d2e-f2cb6b82a8dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7727-bcca-ef9a3a5b1558" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-7605-8d2e-f2cb6b82a8dc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7605-8d2e-f2cb6b82a8dc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-7605-8d2e-f2cb6b82a8dc" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7605-8d2e-f2cb6b82a8dc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7c94-9023-4cc4ea0f3bb0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e98ec-82bf-7605-8d2e-f2cb6b82a8dc" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7c94-9023-4cc4ea0f3bb0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_UnsecuredIntercompanyLoanAgreementMember_019e98ec-82bf-76b4-a912-4838a68a22af" xlink:href="shus-20260630.xsd#shus_UnsecuredIntercompanyLoanAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7c94-9023-4cc4ea0f3bb0" xlink:to="loc_shus_UnsecuredIntercompanyLoanAgreementMember_019e98ec-82bf-76b4-a912-4838a68a22af" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ThirdPartyNotePayableMember_019e98ec-82bf-7557-bd12-fd4faa9c04a1" xlink:href="shus-20260630.xsd#shus_ThirdPartyNotePayableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7c94-9023-4cc4ea0f3bb0" xlink:to="loc_shus_ThirdPartyNotePayableMember_019e98ec-82bf-7557-bd12-fd4faa9c04a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_IntercompanyUnsecuredRevolvingCreditAgreementMember_019e98ec-82bf-7aee-9197-a773e2a1d702" xlink:href="shus-20260630.xsd#shus_IntercompanyUnsecuredRevolvingCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e98ec-82bf-7c94-9023-4cc4ea0f3bb0" xlink:to="loc_shus_IntercompanyUnsecuredRevolvingCreditAgreementMember_019e98ec-82bf-7aee-9197-a773e2a1d702" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-730b-8c61-af3cacd7b6ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7727-bcca-ef9a3a5b1558" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-730b-8c61-af3cacd7b6ca" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-730b-8c61-af3cacd7b6ca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-730b-8c61-af3cacd7b6ca" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-730b-8c61-af3cacd7b6ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-70fc-827d-e90a8e04bac8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-730b-8c61-af3cacd7b6ca" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-70fc-827d-e90a8e04bac8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableOtherPayablesMember_019e98ec-82bf-7564-b7e6-e910525fddd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayableOtherPayablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-70fc-827d-e90a8e04bac8" xlink:to="loc_us-gaap_NotesPayableOtherPayablesMember_019e98ec-82bf-7564-b7e6-e910525fddd5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_019e98ec-82bf-74a6-bb28-b8d7faad2428" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-70fc-827d-e90a8e04bac8" xlink:to="loc_us-gaap_UnsecuredDebtMember_019e98ec-82bf-74a6-bb28-b8d7faad2428" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7a77-a707-176d9c41bfa9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7727-bcca-ef9a3a5b1558" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7a77-a707-176d9c41bfa9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-7a77-a707-176d9c41bfa9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7a77-a707-176d9c41bfa9" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-7a77-a707-176d9c41bfa9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-78a7-ab1b-bdfd941bc947" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7a77-a707-176d9c41bfa9" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-78a7-ab1b-bdfd941bc947" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_019e98ec-82bf-7cdf-aa42-fbce234b36ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-78a7-ab1b-bdfd941bc947" xlink:to="loc_us-gaap_RelatedPartyMember_019e98ec-82bf-7cdf-aa42-fbce234b36ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019e98ec-82bf-7d9f-8504-8e9f0b018419" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7727-bcca-ef9a3a5b1558" xlink:to="loc_dei_LegalEntityAxis_019e98ec-82bf-7d9f-8504-8e9f0b018419" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019e98ec-82bf-7d9f-8504-8e9f0b018419_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019e98ec-82bf-7d9f-8504-8e9f0b018419" xlink:to="loc_dei_EntityDomain_019e98ec-82bf-7d9f-8504-8e9f0b018419_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019e98ec-82bf-7672-ae22-cce56d5addf4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019e98ec-82bf-7d9f-8504-8e9f0b018419" xlink:to="loc_dei_EntityDomain_019e98ec-82bf-7672-ae22-cce56d5addf4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_WoodsideHomesCompanyLLCMember_019e98ec-82bf-7769-8bab-bc16d066e913" xlink:href="shus-20260630.xsd#shus_WoodsideHomesCompanyLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019e98ec-82bf-7672-ae22-cce56d5addf4" xlink:to="loc_shus_WoodsideHomesCompanyLLCMember_019e98ec-82bf-7769-8bab-bc16d066e913" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ChesmarNoteMember_019e98ec-82bf-7b0c-bc2e-c0c1f67f6dcc" xlink:href="shus-20260630.xsd#shus_ChesmarNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019e98ec-82bf-7672-ae22-cce56d5addf4" xlink:to="loc_shus_ChesmarNoteMember_019e98ec-82bf-7b0c-bc2e-c0c1f67f6dcc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HoltNoteMember_019e98ec-82bf-7820-bcf6-31c16a4d9d7b" xlink:href="shus-20260630.xsd#shus_HoltNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019e98ec-82bf-7672-ae22-cce56d5addf4" xlink:to="loc_shus_HoltNoteMember_019e98ec-82bf-7820-bcf6-31c16a4d9d7b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7a8e-9c0e-c168bfb6bbf8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7727-bcca-ef9a3a5b1558" xlink:to="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7a8e-9c0e-c168bfb6bbf8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7a8e-9c0e-c168bfb6bbf8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7a8e-9c0e-c168bfb6bbf8" xlink:to="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7a8e-9c0e-c168bfb6bbf8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-778f-a4e4-0e0dd432d59f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7a8e-9c0e-c168bfb6bbf8" xlink:to="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-778f-a4e4-0e0dd432d59f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e98ec-82bf-7888-99b3-b5539d903556" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-778f-a4e4-0e0dd432d59f" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e98ec-82bf-7888-99b3-b5539d903556" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019ea587-c8c2-753f-bbd6-f3ff182bea27" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-778f-a4e4-0e0dd432d59f" xlink:to="loc_us-gaap_LineOfCreditMember_019ea587-c8c2-753f-bbd6-f3ff182bea27" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7e76-973e-df7a231a17f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7727-bcca-ef9a3a5b1558" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7e76-973e-df7a231a17f9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7e76-973e-df7a231a17f9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7e76-973e-df7a231a17f9" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7e76-973e-df7a231a17f9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7245-8965-c56bbbb5cec5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7e76-973e-df7a231a17f9" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7245-8965-c56bbbb5cec5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-710a-8ed6-0a4d5e0938b9" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-7245-8965-c56bbbb5cec5" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-710a-8ed6-0a4d5e0938b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019e98ec-82bf-7dae-b605-e1a191eea6fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019e98ec-82bf-7dae-b605-e1a191eea6fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e98ec-82bf-7fee-8b1a-bdfdec354d33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e98ec-82bf-7fee-8b1a-bdfdec354d33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_019e98ec-82bf-75c5-ba19-1d4c54e68074" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ExtinguishmentOfDebtAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_ExtinguishmentOfDebtAmount_019e98ec-82bf-75c5-ba19-1d4c54e68074" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_RelatedPartyTransactionGuaranteeFeePercentage_019e98ec-82bf-72f0-9976-3a5b1325419b" xlink:href="shus-20260630.xsd#shus_RelatedPartyTransactionGuaranteeFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_shus_RelatedPartyTransactionGuaranteeFeePercentage_019e98ec-82bf-72f0-9976-3a5b1325419b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e98ec-82bf-7178-9f05-1bb40a5a7e92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e98ec-82bf-7178-9f05-1bb40a5a7e92" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivables_019e98ec-82bf-7c3d-92ba-21547e736957" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_OtherReceivables_019e98ec-82bf-7c3d-92ba-21547e736957" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRelatedPartyDebt_019fea05-e270-78d8-bce9-9c9928c3d717" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromRelatedPartyDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_ProceedsFromRelatedPartyDebt_019fea05-e270-78d8-bce9-9c9928c3d717" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrentAndNoncurrent_019e98ec-82bf-7564-9e86-930bd492663e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_AccountsPayableCurrentAndNoncurrent_019e98ec-82bf-7564-9e86-930bd492663e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterestAndDividend_019e98ec-82bf-7a2b-b2cc-7e1090a20cab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeInterestAndDividend"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_InvestmentIncomeInterestAndDividend_019e98ec-82bf-7a2b-b2cc-7e1090a20cab" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e98ec-82bf-7255-b0b3-f351c2539c5a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e98ec-82bf-7255-b0b3-f351c2539c5a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostDirectMaterial_019e98ec-82bf-7c6e-86c4-a2d0284aca07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostDirectMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_CostDirectMaterial_019e98ec-82bf-7c6e-86c4-a2d0284aca07" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts_019e98ec-82bf-70c3-bde7-2a15048aee4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-752c-98a6-f67c1c791234" xlink:to="loc_us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts_019e98ec-82bf-70c3-bde7-2a15048aee4b" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/RelatedPartyTransactionsScheduleofInterestCapitalizedtoInventoryDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#RelatedPartyTransactionsScheduleofInterestCapitalizedtoInventoryDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/RelatedPartyTransactionsScheduleofInterestCapitalizedtoInventoryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-7b3e-b36f-7a3d015dc443" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7460-95f7-f0be449864f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-7b3e-b36f-7a3d015dc443" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7460-95f7-f0be449864f4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-70ed-ab9a-83122facc7df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e98ec-82bf-7460-95f7-f0be449864f4" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-70ed-ab9a-83122facc7df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-70ed-ab9a-83122facc7df_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-70ed-ab9a-83122facc7df" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-70ed-ab9a-83122facc7df_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-778d-958c-0961b117aea1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-70ed-ab9a-83122facc7df" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-778d-958c-0961b117aea1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_019e98ec-82bf-7690-ad4b-7f36cd7e3ab4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-778d-958c-0961b117aea1" xlink:to="loc_us-gaap_RelatedPartyMember_019e98ec-82bf-7690-ad4b-7f36cd7e3ab4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInventoryCapitalizedInterestCostsRollForward_019e98ec-82bf-76f7-8b2a-77e1de1ff7ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealEstateInventoryCapitalizedInterestCostsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e98ec-82bf-7b3e-b36f-7a3d015dc443" xlink:to="loc_us-gaap_RealEstateInventoryCapitalizedInterestCostsRollForward_019e98ec-82bf-76f7-8b2a-77e1de1ff7ce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInventoryCapitalizedInterestCosts_019e98ec-82bf-775f-8bf5-0f26bf24cccc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealEstateInventoryCapitalizedInterestCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateInventoryCapitalizedInterestCostsRollForward_019e98ec-82bf-76f7-8b2a-77e1de1ff7ce" xlink:to="loc_us-gaap_RealEstateInventoryCapitalizedInterestCosts_019e98ec-82bf-775f-8bf5-0f26bf24cccc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInventoryCapitalizedInterestCostsIncurred_019e98ec-82bf-73e4-ac81-935ee8e3a33a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealEstateInventoryCapitalizedInterestCostsIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateInventoryCapitalizedInterestCostsRollForward_019e98ec-82bf-76f7-8b2a-77e1de1ff7ce" xlink:to="loc_us-gaap_RealEstateInventoryCapitalizedInterestCostsIncurred_019e98ec-82bf-73e4-ac81-935ee8e3a33a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInventoryCapitalizedInterestCostsCostOfSales1_019e98ec-82bf-7a5c-8e0c-17f18ab9fd03" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealEstateInventoryCapitalizedInterestCostsCostOfSales1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateInventoryCapitalizedInterestCostsRollForward_019e98ec-82bf-76f7-8b2a-77e1de1ff7ce" xlink:to="loc_us-gaap_RealEstateInventoryCapitalizedInterestCostsCostOfSales1_019e98ec-82bf-7a5c-8e0c-17f18ab9fd03" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInventoryCapitalizedInterestCosts_019e98ec-82bf-77e3-838d-45fb0f9221ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealEstateInventoryCapitalizedInterestCosts"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://ir.richmondamerican.com/role/CommonControlMergerDetails" xlink:type="simple" xlink:href="shus-20260630.xsd#CommonControlMergerDetails"/>
  <link:definitionLink xlink:role="http://ir.richmondamerican.com/role/CommonControlMergerDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_019e98ec-82bf-75c8-8b37-ae5257c55d5b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e98ec-82bf-7d8d-aeb6-a0728123a15d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e98ec-82bf-75c8-8b37-ae5257c55d5b" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e98ec-82bf-7d8d-aeb6-a0728123a15d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019e98ec-82bf-7395-90ae-1eb0b44be8f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e98ec-82bf-7d8d-aeb6-a0728123a15d" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019e98ec-82bf-7395-90ae-1eb0b44be8f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-7395-90ae-1eb0b44be8f9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e98ec-82bf-7395-90ae-1eb0b44be8f9" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-7395-90ae-1eb0b44be8f9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-72b4-9e0f-a9b31cfc3f02" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e98ec-82bf-7395-90ae-1eb0b44be8f9" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-72b4-9e0f-a9b31cfc3f02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_WoodsideHomesCompanyLLCMember_019e98ec-82bf-735b-bc7d-49a5f86cf277" xlink:href="shus-20260630.xsd#shus_WoodsideHomesCompanyLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-72b4-9e0f-a9b31cfc3f02" xlink:to="loc_shus_WoodsideHomesCompanyLLCMember_019e98ec-82bf-735b-bc7d-49a5f86cf277" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HoltHomesCompanyLLCMember_019e98ec-82bf-7636-8b44-a9fd010869e2" xlink:href="shus-20260630.xsd#shus_HoltHomesCompanyLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-72b4-9e0f-a9b31cfc3f02" xlink:to="loc_shus_HoltHomesCompanyLLCMember_019e98ec-82bf-7636-8b44-a9fd010869e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_ChesmarHomesCompanyLLCMember_019e98ec-82bf-7423-bef6-3c7c90a94f24" xlink:href="shus-20260630.xsd#shus_ChesmarHomesCompanyLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e98ec-82bf-72b4-9e0f-a9b31cfc3f02" xlink:to="loc_shus_ChesmarHomesCompanyLLCMember_019e98ec-82bf-7423-bef6-3c7c90a94f24" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7e6b-ab90-e3fbe2c94fa4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e98ec-82bf-7d8d-aeb6-a0728123a15d" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7e6b-ab90-e3fbe2c94fa4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-7e6b-ab90-e3fbe2c94fa4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7e6b-ab90-e3fbe2c94fa4" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-7e6b-ab90-e3fbe2c94fa4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e98ec-82bf-75c4-9e20-504e6dc0db5c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e98ec-82bf-7e6b-ab90-e3fbe2c94fa4" xlink:to="loc_us-gaap_SegmentDomain_019e98ec-82bf-75c4-9e20-504e6dc0db5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-7efb-846d-c5ba607917b1" xlink:href="shus-20260630.xsd#shus_HomebuildingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-75c4-9e20-504e6dc0db5c" xlink:to="loc_shus_HomebuildingSegmentMember_019e98ec-82bf-7efb-846d-c5ba607917b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-7fa2-967b-74a910198a4e" xlink:href="shus-20260630.xsd#shus_FinancialServicesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e98ec-82bf-75c4-9e20-504e6dc0db5c" xlink:to="loc_shus_FinancialServicesSegmentMember_019e98ec-82bf-7fa2-967b-74a910198a4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-71a2-9d1c-ea73a2bd45e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e98ec-82bf-7d8d-aeb6-a0728123a15d" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-71a2-9d1c-ea73a2bd45e9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-71a2-9d1c-ea73a2bd45e9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-71a2-9d1c-ea73a2bd45e9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-71a2-9d1c-ea73a2bd45e9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-7a50-9e4f-a78957f4aa60" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e98ec-82bf-71a2-9d1c-ea73a2bd45e9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-7a50-9e4f-a78957f4aa60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableOtherPayablesMember_019e98ec-82bf-7eed-a398-9197fb29a973" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayableOtherPayablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e98ec-82bf-7a50-9e4f-a78957f4aa60" xlink:to="loc_us-gaap_NotesPayableOtherPayablesMember_019e98ec-82bf-7eed-a398-9197fb29a973" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7809-bb9e-c248b97b97c9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e98ec-82bf-7d8d-aeb6-a0728123a15d" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7809-bb9e-c248b97b97c9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-7809-bb9e-c248b97b97c9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7809-bb9e-c248b97b97c9" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-7809-bb9e-c248b97b97c9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-75a0-ad90-8a53ffb8065c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e98ec-82bf-7809-bb9e-c248b97b97c9" xlink:to="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-75a0-ad90-8a53ffb8065c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_019e98ec-82bf-7e3d-a977-1a953ec6312d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e98ec-82bf-75a0-ad90-8a53ffb8065c" xlink:to="loc_us-gaap_RelatedPartyMember_019e98ec-82bf-7e3d-a977-1a953ec6312d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7871-a416-38472b04a888" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e98ec-82bf-7d8d-aeb6-a0728123a15d" xlink:to="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7871-a416-38472b04a888" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7871-a416-38472b04a888_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7871-a416-38472b04a888" xlink:to="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7871-a416-38472b04a888_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7e70-be97-e6abd2be1cb5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e98ec-82bf-7871-a416-38472b04a888" xlink:to="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7e70-be97-e6abd2be1cb5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e98ec-82bf-7843-98ba-f088930ced45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e98ec-82bf-7e70-be97-e6abd2be1cb5" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e98ec-82bf-7843-98ba-f088930ced45" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e98ec-82bf-75c8-8b37-ae5257c55d5b" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_019e98ec-82bf-7daa-95fd-d46cf304135f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_019e98ec-82bf-7daa-95fd-d46cf304135f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BusinessCombinationRecognizedAssetAcquiredReceivableTradeAndOtherReceivables_019e98ec-82bf-7fdc-80d9-ce264cfded67" xlink:href="shus-20260630.xsd#shus_BusinessCombinationRecognizedAssetAcquiredReceivableTradeAndOtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_shus_BusinessCombinationRecognizedAssetAcquiredReceivableTradeAndOtherReceivables_019e98ec-82bf-7fdc-80d9-ce264cfded67" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019e98ec-82bf-731d-8674-6732bf1c6593" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019e98ec-82bf-731d-8674-6732bf1c6593" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_019e98ec-82bf-7118-9e67-f49152d40b56" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_019e98ec-82bf-7118-9e67-f49152d40b56" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019e98ec-82bf-75bc-b904-f23c690ad675" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019e98ec-82bf-75bc-b904-f23c690ad675" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets_019e98ec-82bf-72c2-b3c5-7d5c172d5fc4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets_019e98ec-82bf-72c2-b3c5-7d5c172d5fc4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_019e98ec-82bf-7398-815e-5742572b0728" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_019e98ec-82bf-7398-815e-5742572b0728" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BusinessCombinationRecognizedAssetAcquiredUnconsolidatedRealEstateAndOtherJointVentures_019e98ec-82bf-7b4e-b420-75a508039e18" xlink:href="shus-20260630.xsd#shus_BusinessCombinationRecognizedAssetAcquiredUnconsolidatedRealEstateAndOtherJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_shus_BusinessCombinationRecognizedAssetAcquiredUnconsolidatedRealEstateAndOtherJointVentures_019e98ec-82bf-7b4e-b420-75a508039e18" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BusinessCombinationRecognizedAssetAcquiredGoodwillAndIntangibleAssetsNet_019e98ec-82bf-7c46-987d-4f5420d10f55" xlink:href="shus-20260630.xsd#shus_BusinessCombinationRecognizedAssetAcquiredGoodwillAndIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_shus_BusinessCombinationRecognizedAssetAcquiredGoodwillAndIntangibleAssetsNet_019e98ec-82bf-7c46-987d-4f5420d10f55" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BusinessCombinationRecognizedAssetAcquiredRestrictedCash_019e98ec-82bf-7845-9d23-b669ba2710fc" xlink:href="shus-20260630.xsd#shus_BusinessCombinationRecognizedAssetAcquiredRestrictedCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_shus_BusinessCombinationRecognizedAssetAcquiredRestrictedCash_019e98ec-82bf-7845-9d23-b669ba2710fc" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BusinessCombinationRecognizedAssetAcquiredMortgageLoansHeldForSaleNet_019e98ec-82bf-70b2-8def-9b1d97a53a92" xlink:href="shus-20260630.xsd#shus_BusinessCombinationRecognizedAssetAcquiredMortgageLoansHeldForSaleNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_shus_BusinessCombinationRecognizedAssetAcquiredMortgageLoansHeldForSaleNet_019e98ec-82bf-70b2-8def-9b1d97a53a92" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_019e98ec-82bf-72f4-ac8c-87d18c0cd4fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_019e98ec-82bf-72f4-ac8c-87d18c0cd4fa" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019e98ec-82bf-7aee-8eed-a6dec845a9cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_019e98ec-82bf-763d-8b5f-9381d50194f9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019e98ec-82bf-7aee-8eed-a6dec845a9cf" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_019e98ec-82bf-7ef3-b17d-0ca4e0647365" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e98ec-82bf-75c8-8b37-ae5257c55d5b" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_019e98ec-82bf-7ef3-b17d-0ca4e0647365" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_019e98ec-82bf-7b79-8006-5ee80e7f6934" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_019e98ec-82bf-7ef3-b17d-0ca4e0647365" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_019e98ec-82bf-7b79-8006-5ee80e7f6934" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BusinessCombinationRecognizedLiabilityAssumedAccruedAndOtherLiabilities_019e98ec-82bf-76be-8a55-3e953799ccbd" xlink:href="shus-20260630.xsd#shus_BusinessCombinationRecognizedLiabilityAssumedAccruedAndOtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_019e98ec-82bf-7ef3-b17d-0ca4e0647365" xlink:to="loc_shus_BusinessCombinationRecognizedLiabilityAssumedAccruedAndOtherLiabilities_019e98ec-82bf-76be-8a55-3e953799ccbd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BusinessCombinationRecognizedLiabilitiesAssumedNotesPayable_019e98ec-82bf-715f-98d3-3a9a12404b2c" xlink:href="shus-20260630.xsd#shus_BusinessCombinationRecognizedLiabilitiesAssumedNotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_019e98ec-82bf-7ef3-b17d-0ca4e0647365" xlink:to="loc_shus_BusinessCombinationRecognizedLiabilitiesAssumedNotesPayable_019e98ec-82bf-715f-98d3-3a9a12404b2c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BusinessCombinationRecognizedLiabilitiesAssumedLineOfCreditFacility_019e98ec-82bf-7cc8-8220-d0dfe087be54" xlink:href="shus-20260630.xsd#shus_BusinessCombinationRecognizedLiabilitiesAssumedLineOfCreditFacility"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_019e98ec-82bf-7ef3-b17d-0ca4e0647365" xlink:to="loc_shus_BusinessCombinationRecognizedLiabilitiesAssumedLineOfCreditFacility_019e98ec-82bf-7cc8-8220-d0dfe087be54" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BusinessCombinationRecognizedLiabilityAssumedAccountsPayableAndAccruedLiabilities_019e98ec-82bf-7c3f-bfd9-bd56dbed81f0" xlink:href="shus-20260630.xsd#shus_BusinessCombinationRecognizedLiabilityAssumedAccountsPayableAndAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_019e98ec-82bf-7ef3-b17d-0ca4e0647365" xlink:to="loc_shus_BusinessCombinationRecognizedLiabilityAssumedAccountsPayableAndAccruedLiabilities_019e98ec-82bf-7c3f-bfd9-bd56dbed81f0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_BusinessCombinationRecognizedLiabilityAssumedMortgageRepurchaseFacilities_019e98ec-82bf-7f08-aef8-a1bba3a18826" xlink:href="shus-20260630.xsd#shus_BusinessCombinationRecognizedLiabilityAssumedMortgageRepurchaseFacilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_019e98ec-82bf-7ef3-b17d-0ca4e0647365" xlink:to="loc_shus_BusinessCombinationRecognizedLiabilityAssumedMortgageRepurchaseFacilities_019e98ec-82bf-7f08-aef8-a1bba3a18826" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_019e98ec-82bf-7630-9214-d90aafcc2c08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_019e98ec-82bf-7ef3-b17d-0ca4e0647365" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_019e98ec-82bf-7630-9214-d90aafcc2c08" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019e98ec-82bf-74ea-9e2e-a2339b3d1ad8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e98ec-82bf-75c8-8b37-ae5257c55d5b" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019e98ec-82bf-74ea-9e2e-a2339b3d1ad8" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-roles-2026.xsd#eedm1"/>
  <link:definitionLink xlink:role="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_HomeSales_019e98ec-80d1-7a0f-8af6-9dcc44f88980" xlink:href="shus-20260630.xsd#shus_HomeSales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain" xlink:to="loc_shus_HomeSales_019e98ec-80d1-7a0f-8af6-9dcc44f88980" xlink:type="arc" order="501"/>
    <link:loc xlink:type="locator" xlink:label="loc_shus_FinancialRevenue_019e98ec-80d1-7f1e-9d33-97b9f2e13986" xlink:href="shus-20260630.xsd#shus_FinancialRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain" xlink:to="loc_shus_FinancialRevenue_019e98ec-80d1-7f1e-9d33-97b9f2e13986" xlink:type="arc" order="502"/>
  </link:definitionLink>
</link:linkbase>
