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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019f48e4-8e0d-7db8-b4a6-1ff5d9b24d75,g:0ac65d21-d5de-4205-bde8-4e7c52928cf3-->
<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://www.kbhome.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="kbh-20260831.xsd#CONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019f48e4-9014-731e-9850-9ede26227782" 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_019f48e4-9014-7092-b4f6-364b1ae40d19" 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_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_us-gaap_StatementTable_019f48e4-9014-7092-b4f6-364b1ae40d19" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-9014-7c4a-b071-aacddfedd530" 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_019f48e4-9014-7092-b4f6-364b1ae40d19" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-9014-7c4a-b071-aacddfedd530" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7c4a-b071-aacddfedd530_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_019f48e4-9014-7c4a-b071-aacddfedd530" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7c4a-b071-aacddfedd530_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7e4f-814c-99c443daa25e" 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_019f48e4-9014-7c4a-b071-aacddfedd530" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7e4f-814c-99c443daa25e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeBuildingMember_019f48e4-9014-72e7-aa78-f8291ab6ac43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7e4f-814c-99c443daa25e" xlink:to="loc_us-gaap_HomeBuildingMember_019f48e4-9014-72e7-aa78-f8291ab6ac43" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServiceMember_019f48e4-9014-76a8-bd96-11ac068e5a3a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7e4f-814c-99c443daa25e" xlink:to="loc_us-gaap_FinancialServiceMember_019f48e4-9014-76a8-bd96-11ac068e5a3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f48e4-9014-7d06-9b37-12dae368745a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f48e4-9014-7d06-9b37-12dae368745a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019f48e4-9014-7347-bdc2-6501d16e4619" 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_StatementLineItems_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019f48e4-9014-7347-bdc2-6501d16e4619" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019f48e4-9014-7f1a-98c3-f6a6b3bd9508" 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_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019f48e4-9014-7f1a-98c3-f6a6b3bd9508" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019f48e4-9014-7f3c-b8a2-01be34f06124" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_us-gaap_OperatingIncomeLoss_019f48e4-9014-7f3c-b8a2-01be34f06124" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_InvestmentIncomeInterestAndOther_019f48e4-9014-7c33-af6f-343469466250" xlink:href="kbh-20260831.xsd#kbh_InvestmentIncomeInterestAndOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_kbh_InvestmentIncomeInterestAndOther_019f48e4-9014-7c33-af6f-343469466250" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019f48e4-9014-7287-9902-242c267addcf" 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_StatementLineItems_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019f48e4-9014-7287-9902-242c267addcf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019f48e4-9014-73d7-b1e7-f1183ff41d91" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019f48e4-9014-73d7-b1e7-f1183ff41d91" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019f48e4-9014-70f5-902d-617a6a6cdfa1" 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_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019f48e4-9014-70f5-902d-617a6a6cdfa1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019f48e4-9014-7aab-b763-6d5cfaa8d9c5" 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_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_us-gaap_NetIncomeLoss_019f48e4-9014-7aab-b763-6d5cfaa8d9c5" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_019f48e4-9014-7e84-93bc-f2d5299ef3b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_us-gaap_EarningsPerShareAbstract_019f48e4-9014-7e84-93bc-f2d5299ef3b7" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019f48e4-9014-79f6-86f4-50569aa5de6b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_019f48e4-9014-7e84-93bc-f2d5299ef3b7" xlink:to="loc_us-gaap_EarningsPerShareBasic_019f48e4-9014-79f6-86f4-50569aa5de6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019f48e4-9014-76d0-94df-14b47cc921e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_019f48e4-9014-7e84-93bc-f2d5299ef3b7" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019f48e4-9014-76d0-94df-14b47cc921e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_EarningsPerShareBasicAndDilutedOtherDisclosuresEPSAbstract_019f48e4-9014-7151-9f7e-e9609561769d" xlink:href="kbh-20260831.xsd#kbh_EarningsPerShareBasicAndDilutedOtherDisclosuresEPSAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f48e4-9014-731e-9850-9ede26227782" xlink:to="loc_kbh_EarningsPerShareBasicAndDilutedOtherDisclosuresEPSAbstract_019f48e4-9014-7151-9f7e-e9609561769d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019f48e4-9014-7527-908a-a2876412d1dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_EarningsPerShareBasicAndDilutedOtherDisclosuresEPSAbstract_019f48e4-9014-7151-9f7e-e9609561769d" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019f48e4-9014-7527-908a-a2876412d1dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019f48e4-9014-744e-856e-4e8f87245e30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_EarningsPerShareBasicAndDilutedOtherDisclosuresEPSAbstract_019f48e4-9014-7151-9f7e-e9609561769d" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019f48e4-9014-744e-856e-4e8f87245e30" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="kbh-20260831.xsd#CONSOLIDATEDBALANCESHEETS"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019f48e4-9014-71b1-892b-8b5fdcbe0f64" 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_019f48e4-9014-7247-896c-39ee75bd292c" 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_019f48e4-9014-71b1-892b-8b5fdcbe0f64" xlink:to="loc_us-gaap_StatementTable_019f48e4-9014-7247-896c-39ee75bd292c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-9014-7305-9784-8add3c253091" 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_019f48e4-9014-7247-896c-39ee75bd292c" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-9014-7305-9784-8add3c253091" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7305-9784-8add3c253091_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_019f48e4-9014-7305-9784-8add3c253091" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7305-9784-8add3c253091_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7f1c-8892-dfe3251fa99c" 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_019f48e4-9014-7305-9784-8add3c253091" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7f1c-8892-dfe3251fa99c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeBuildingMember_019f48e4-9014-7e4f-8666-256ecedab47b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7f1c-8892-dfe3251fa99c" xlink:to="loc_us-gaap_HomeBuildingMember_019f48e4-9014-7e4f-8666-256ecedab47b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServiceMember_019f48e4-9014-719f-bae7-8b0f416b01c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9014-7f1c-8892-dfe3251fa99c" xlink:to="loc_us-gaap_FinancialServiceMember_019f48e4-9014-719f-bae7-8b0f416b01c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_019f48e4-9014-7408-b29c-db85e4a18764" 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_019f48e4-9014-71b1-892b-8b5fdcbe0f64" xlink:to="loc_us-gaap_AssetsAbstract_019f48e4-9014-7408-b29c-db85e4a18764" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019f48e4-9014-7644-ba34-25075066d95b" 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_019f48e4-9014-7408-b29c-db85e4a18764" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019f48e4-9014-7644-ba34-25075066d95b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndNotesReceivableNet_019f48e4-9014-76ff-b33c-4c11e97a9154" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsAndNotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f48e4-9014-7408-b29c-db85e4a18764" xlink:to="loc_us-gaap_AccountsAndNotesReceivableNet_019f48e4-9014-76ff-b33c-4c11e97a9154" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryOperativeBuilders_019f48e4-9014-7f5c-9000-94a9a18b9007" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryOperativeBuilders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f48e4-9014-7408-b29c-db85e4a18764" xlink:to="loc_us-gaap_InventoryOperativeBuilders_019f48e4-9014-7f5c-9000-94a9a18b9007" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_019f48e4-9014-725b-bfa7-3fa22e022aea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f48e4-9014-7408-b29c-db85e4a18764" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_019f48e4-9014-725b-bfa7-3fa22e022aea" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019f48e4-9014-7652-81a2-38b8c88adf5e" 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_019f48e4-9014-7408-b29c-db85e4a18764" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019f48e4-9014-7652-81a2-38b8c88adf5e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_019f48e4-9014-7484-8e0a-4f141d7b1056" 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_019f48e4-9014-7408-b29c-db85e4a18764" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_019f48e4-9014-7484-8e0a-4f141d7b1056" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_019f48e4-9014-7b8b-afb2-603a9bfe31e4" 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_019f48e4-9014-7408-b29c-db85e4a18764" xlink:to="loc_us-gaap_OtherAssets_019f48e4-9014-7b8b-afb2-603a9bfe31e4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019f48e4-9014-7118-8f21-9b4b6011d974" 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_019f48e4-9014-7408-b29c-db85e4a18764" xlink:to="loc_us-gaap_Assets_019f48e4-9014-7118-8f21-9b4b6011d974" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f48e4-9014-7e9b-b4a5-d9950e0a273c" 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_019f48e4-9014-71b1-892b-8b5fdcbe0f64" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f48e4-9014-7e9b-b4a5-d9950e0a273c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrentAndNoncurrent_019f48e4-9014-76bc-b82d-6838d1deacfd" 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_019f48e4-9014-7e9b-b4a5-d9950e0a273c" xlink:to="loc_us-gaap_AccountsPayableCurrentAndNoncurrent_019f48e4-9014-76bc-b82d-6838d1deacfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_019f48e4-9014-7b5f-9a14-e01cd1643f7d" 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_019f48e4-9014-7e9b-b4a5-d9950e0a273c" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_019f48e4-9014-7b5f-9a14-e01cd1643f7d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansPayable_019f48e4-9014-7dd4-9a61-ca5d86f4567d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesAndLoansPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f48e4-9014-7e9b-b4a5-d9950e0a273c" xlink:to="loc_us-gaap_NotesAndLoansPayable_019f48e4-9014-7dd4-9a61-ca5d86f4567d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019f48e4-9014-7a2c-a521-2c4842e5321a" 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_019f48e4-9014-7e9b-b4a5-d9950e0a273c" xlink:to="loc_us-gaap_Liabilities_019f48e4-9014-7a2c-a521-2c4842e5321a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServicesLiabilities_019f48e4-9014-7fed-96f1-e0f1f734a980" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServicesLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f48e4-9014-7e9b-b4a5-d9950e0a273c" xlink:to="loc_us-gaap_FinancialServicesLiabilities_019f48e4-9014-7fed-96f1-e0f1f734a980" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_019f48e4-9014-7efb-af7e-39f18e78f9b4" 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_019f48e4-9014-7e9b-b4a5-d9950e0a273c" xlink:to="loc_us-gaap_StockholdersEquityAbstract_019f48e4-9014-7efb-af7e-39f18e78f9b4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019f48e4-9014-70bf-8173-1508a34ff0f9" 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_019f48e4-9014-7efb-af7e-39f18e78f9b4" xlink:to="loc_us-gaap_CommonStockValue_019f48e4-9014-70bf-8173-1508a34ff0f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019f48e4-9014-728c-8c1d-f300fab72402" 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_019f48e4-9014-7efb-af7e-39f18e78f9b4" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019f48e4-9014-728c-8c1d-f300fab72402" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019f48e4-9014-78b4-a0a8-d175963a1c66" 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_019f48e4-9014-7efb-af7e-39f18e78f9b4" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019f48e4-9014-78b4-a0a8-d175963a1c66" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019f48e4-9014-7e4b-b807-68fffd80da9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019f48e4-9014-7efb-af7e-39f18e78f9b4" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019f48e4-9014-7e4b-b807-68fffd80da9a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_019f48e4-9014-79f5-9cdc-afc6f70e653c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019f48e4-9014-7efb-af7e-39f18e78f9b4" xlink:to="loc_us-gaap_TreasuryStockCommonValue_019f48e4-9014-79f5-9cdc-afc6f70e653c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019f48e4-9014-78ff-b7f6-97b6edd42514" 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_019f48e4-9014-7efb-af7e-39f18e78f9b4" xlink:to="loc_us-gaap_StockholdersEquity_019f48e4-9014-78ff-b7f6-97b6edd42514" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019f48e4-9014-7cea-bf1c-31a0984ad037" 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_019f48e4-9014-7e9b-b4a5-d9950e0a273c" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_019f48e4-9014-7cea-bf1c-31a0984ad037" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/CONSLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="simple" xlink:href="kbh-20260831.xsd#CONSLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/CONSLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019f48e4-9014-779f-9562-b72dcc8e1c09" 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_019f48e4-9014-7823-90e0-bce0426ab81e" 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_019f48e4-9014-779f-9562-b72dcc8e1c09" xlink:to="loc_us-gaap_StatementTable_019f48e4-9014-7823-90e0-bce0426ab81e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019f48e4-9014-7aab-ae39-79544d7eda10" 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_019f48e4-9014-7823-90e0-bce0426ab81e" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019f48e4-9014-7aab-ae39-79544d7eda10" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f48e4-9014-7aab-ae39-79544d7eda10_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_019f48e4-9014-7aab-ae39-79544d7eda10" xlink:to="loc_us-gaap_EquityComponentDomain_019f48e4-9014-7aab-ae39-79544d7eda10_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f48e4-9014-70f8-9602-b9e156f68232" 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_019f48e4-9014-7aab-ae39-79544d7eda10" xlink:to="loc_us-gaap_EquityComponentDomain_019f48e4-9014-70f8-9602-b9e156f68232" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019f48e4-9014-7b11-a59e-666d50240fe8" 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_019f48e4-9014-70f8-9602-b9e156f68232" xlink:to="loc_us-gaap_CommonStockMember_019f48e4-9014-7b11-a59e-666d50240fe8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_019f48e4-9014-780e-a241-25190afb9497" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f48e4-9014-70f8-9602-b9e156f68232" xlink:to="loc_us-gaap_TreasuryStockCommonMember_019f48e4-9014-780e-a241-25190afb9497" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019f48e4-9014-7edd-9137-ad01a8a8fc06" 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_019f48e4-9014-70f8-9602-b9e156f68232" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019f48e4-9014-7edd-9137-ad01a8a8fc06" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019f48e4-9014-7684-b373-7a86a27f5ec9" 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_019f48e4-9014-70f8-9602-b9e156f68232" xlink:to="loc_us-gaap_RetainedEarningsMember_019f48e4-9014-7684-b373-7a86a27f5ec9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f48e4-9014-7007-8f0b-bd1d4c818a0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f48e4-9014-70f8-9602-b9e156f68232" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f48e4-9014-7007-8f0b-bd1d4c818a0f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" 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_019f48e4-9014-779f-9562-b72dcc8e1c09" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssued_019f48e4-9014-7294-baf4-1146a4385336" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_SharesIssued_019f48e4-9014-7294-baf4-1146a4385336" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_019f48e4-9014-7023-b8f7-0b247a8ad46f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_TreasuryStockCommonShares_019f48e4-9014-7023-b8f7-0b247a8ad46f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019f48e4-9014-744e-9fab-4014374ed5f9" 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_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_StockholdersEquity_019f48e4-9014-744e-9fab-4014374ed5f9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019f48e4-9014-79d5-9471-40936a4fed46" 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_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_NetIncomeLoss_019f48e4-9014-79d5-9471-40936a4fed46" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_019f48e4-9014-7461-be3a-f22c25f39d7b" 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_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_DividendsCommonStockCash_019f48e4-9014-7461-be3a-f22c25f39d7b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_019f48e4-9014-7a6c-b78b-b0209f062ca0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_019f48e4-9014-7a6c-b78b-b0209f062ca0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_019f48e4-9014-72c7-aeea-aa992746de17" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_019f48e4-9014-72c7-aeea-aa992746de17" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019f48e4-9014-7979-b4dc-4605fd11ed76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019f48e4-9014-7979-b4dc-4605fd11ed76" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_019f48e4-9014-7d1e-b0ea-3c44692f7cd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_019f48e4-9014-7d1e-b0ea-3c44692f7cd4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019f48e4-9014-7b23-9754-edbbcc5b29c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019f48e4-9014-7b23-9754-edbbcc5b29c2" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_019f48e4-9014-7202-af2c-89b1c08260ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_019f48e4-9014-7202-af2c-89b1c08260ea" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_StockRepurchasedDuringPeriodIncludingExciseTaxValue_019f48e4-9014-749c-b09e-8866418293b5" xlink:href="kbh-20260831.xsd#kbh_StockRepurchasedDuringPeriodIncludingExciseTaxValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_kbh_StockRepurchasedDuringPeriodIncludingExciseTaxValue_019f48e4-9014-749c-b09e-8866418293b5" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_019f48e4-9014-7b27-a137-86b80f582390" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_019f48e4-9014-7b27-a137-86b80f582390" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_019f48e4-9014-7f67-96db-5d2c369b4585" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_019f48e4-9014-7f67-96db-5d2c369b4585" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesRetired_019f48e4-9014-7be3-9128-64ca091fe6b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockSharesRetired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_TreasuryStockSharesRetired_019f48e4-9014-7be3-9128-64ca091fe6b3" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockRetiredCostMethodAmount_019f48e4-9014-7a8b-bff8-c4e0f60bb0a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockRetiredCostMethodAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f48e4-9014-70ad-a478-7c30569ccf23" xlink:to="loc_us-gaap_TreasuryStockRetiredCostMethodAmount_019f48e4-9014-7a8b-bff8-c4e0f60bb0a9" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssued_019f48e4-9014-78e5-ba4d-705b014cb840" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesIssued"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_019f48e4-9014-7bfa-99c7-3837e6c0d8fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019f48e4-9014-7d41-bb74-891836505ae5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/SegmentInformationNarrativesDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#SegmentInformationNarrativesDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/SegmentInformationNarrativesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-70c1-9ce0-c88304fc6073" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7557-af01-b9bd866fbb11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-70c1-9ce0-c88304fc6073" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7557-af01-b9bd866fbb11" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-9015-7a28-b364-591c811d9281" 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_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7557-af01-b9bd866fbb11" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-9015-7a28-b364-591c811d9281" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7a28-b364-591c811d9281_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_019f48e4-9015-7a28-b364-591c811d9281" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7a28-b364-591c811d9281_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-740f-8d67-df082d12114a" 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_019f48e4-9015-7a28-b364-591c811d9281" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-740f-8d67-df082d12114a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeBuildingMember_019f48e4-9015-7d55-893c-f5796a4ad96c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-740f-8d67-df082d12114a" xlink:to="loc_us-gaap_HomeBuildingMember_019f48e4-9015-7d55-893c-f5796a4ad96c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServiceMember_019f48e4-9015-7251-9802-cc7a07487767" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-740f-8d67-df082d12114a" xlink:to="loc_us-gaap_FinancialServiceMember_019f48e4-9015-7251-9802-cc7a07487767" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f48e4-9015-7257-9913-cca0254727f7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7557-af01-b9bd866fbb11" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f48e4-9015-7257-9913-cca0254727f7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019f48e4-9015-7257-9913-cca0254727f7_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f48e4-9015-7257-9913-cca0254727f7" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019f48e4-9015-7257-9913-cca0254727f7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019f48e4-9015-76dc-a5fa-d14ccd8ec00a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f48e4-9015-7257-9913-cca0254727f7" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019f48e4-9015-76dc-a5fa-d14ccd8ec00a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_KBHSLLCMember_019f48e4-9015-733d-85c5-fe6b79d768e6" xlink:href="kbh-20260831.xsd#kbh_KBHSLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019f48e4-9015-76dc-a5fa-d14ccd8ec00a" xlink:to="loc_kbh_KBHSLLCMember_019f48e4-9015-733d-85c5-fe6b79d768e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019f48e4-9015-737a-b5f4-7607fae51b04" 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_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7557-af01-b9bd866fbb11" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019f48e4-9015-737a-b5f4-7607fae51b04" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019f48e4-9015-737a-b5f4-7607fae51b04_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_019f48e4-9015-737a-b5f4-7607fae51b04" xlink:to="loc_us-gaap_RelatedPartyDomain_019f48e4-9015-737a-b5f4-7607fae51b04_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019f48e4-9015-7715-a92b-3ac266d495c6" 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_019f48e4-9015-737a-b5f4-7607fae51b04" xlink:to="loc_us-gaap_RelatedPartyDomain_019f48e4-9015-7715-a92b-3ac266d495c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServiceMember_019f48e4-9015-75c9-a93b-6582a633c502" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019f48e4-9015-7715-a92b-3ac266d495c6" xlink:to="loc_us-gaap_FinancialServiceMember_019f48e4-9015-75c9-a93b-6582a633c502" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_GRAllianceLLCMember_019f48e4-9015-7099-bd3b-c3dee8a78598" xlink:href="kbh-20260831.xsd#kbh_GRAllianceLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019f48e4-9015-7715-a92b-3ac266d495c6" xlink:to="loc_kbh_GRAllianceLLCMember_019f48e4-9015-7099-bd3b-c3dee8a78598" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_NumberOfPrincipalBusinesses_019f48e4-9015-7868-ae1f-13238833ce08" xlink:href="kbh-20260831.xsd#kbh_NumberOfPrincipalBusinesses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-70c1-9ce0-c88304fc6073" xlink:to="loc_kbh_NumberOfPrincipalBusinesses_019f48e4-9015-7868-ae1f-13238833ce08" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_019f48e4-9015-7d40-bab0-c53c9f0ce4a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-70c1-9ce0-c88304fc6073" xlink:to="loc_us-gaap_NumberOfReportableSegments_019f48e4-9015-7d40-bab0-c53c9f0ce4a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019f48e4-9015-7736-9e58-7643dde496ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-70c1-9ce0-c88304fc6073" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019f48e4-9015-7736-9e58-7643dde496ef" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/SegmentInformationSegmentFinancialInformationDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#SegmentInformationSegmentFinancialInformationDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/SegmentInformationSegmentFinancialInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" 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_019f48e4-9015-7dd0-8940-4a8811c45f3b" 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_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f48e4-9015-7dd0-8940-4a8811c45f3b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f48e4-9015-7eda-b29c-e1e50f66e862" 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_019f48e4-9015-7dd0-8940-4a8811c45f3b" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f48e4-9015-7eda-b29c-e1e50f66e862" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f48e4-9015-7eda-b29c-e1e50f66e862_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_019f48e4-9015-7eda-b29c-e1e50f66e862" xlink:to="loc_us-gaap_SegmentDomain_019f48e4-9015-7eda-b29c-e1e50f66e862_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f48e4-9015-78b2-b36c-8ccdaebe8f6f" 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_019f48e4-9015-7eda-b29c-e1e50f66e862" xlink:to="loc_us-gaap_SegmentDomain_019f48e4-9015-78b2-b36c-8ccdaebe8f6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_WestCoastMember_019f48e4-9015-76dd-b6b8-82076a40eaf0" xlink:href="kbh-20260831.xsd#kbh_WestCoastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f48e4-9015-78b2-b36c-8ccdaebe8f6f" xlink:to="loc_kbh_WestCoastMember_019f48e4-9015-76dd-b6b8-82076a40eaf0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SouthwestMember_019f48e4-9015-7f2e-a13e-3e21d35b033d" xlink:href="kbh-20260831.xsd#kbh_SouthwestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f48e4-9015-78b2-b36c-8ccdaebe8f6f" xlink:to="loc_kbh_SouthwestMember_019f48e4-9015-7f2e-a13e-3e21d35b033d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_CentralMember_019f48e4-9015-75c6-b31b-71becb1faed4" xlink:href="kbh-20260831.xsd#kbh_CentralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f48e4-9015-78b2-b36c-8ccdaebe8f6f" xlink:to="loc_kbh_CentralMember_019f48e4-9015-75c6-b31b-71becb1faed4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SoutheastMember_019f48e4-9015-7611-9893-f97f08b7ba5d" xlink:href="kbh-20260831.xsd#kbh_SoutheastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f48e4-9015-78b2-b36c-8ccdaebe8f6f" xlink:to="loc_kbh_SoutheastMember_019f48e4-9015-7611-9893-f97f08b7ba5d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateAndOtherMember_019f48e4-9015-7c9d-8439-ceb1ba069135" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f48e4-9015-78b2-b36c-8ccdaebe8f6f" xlink:to="loc_us-gaap_CorporateAndOtherMember_019f48e4-9015-7c9d-8439-ceb1ba069135" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-9015-71c6-86ef-d26ff105716a" 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_019f48e4-9015-7dd0-8940-4a8811c45f3b" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-9015-71c6-86ef-d26ff105716a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-71c6-86ef-d26ff105716a_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_019f48e4-9015-71c6-86ef-d26ff105716a" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-71c6-86ef-d26ff105716a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-73a9-9cbd-76b5f9de3897" 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_019f48e4-9015-71c6-86ef-d26ff105716a" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-73a9-9cbd-76b5f9de3897" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_HousingMember_019f48e4-9015-73e6-a4dd-c1644655b538" xlink:href="kbh-20260831.xsd#kbh_HousingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-73a9-9cbd-76b5f9de3897" xlink:to="loc_kbh_HousingMember_019f48e4-9015-73e6-a4dd-c1644655b538" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_019f48e4-9015-7392-811b-2e82080c7536" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-73a9-9cbd-76b5f9de3897" xlink:to="loc_us-gaap_LandMember_019f48e4-9015-7392-811b-2e82080c7536" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeBuildingMember_019f48e4-9015-7695-9611-a8180e8282ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-73a9-9cbd-76b5f9de3897" xlink:to="loc_us-gaap_HomeBuildingMember_019f48e4-9015-7695-9611-a8180e8282ec" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_01a0a47f-597a-70ed-8953-14671010d78c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f48e4-9015-7dd0-8940-4a8811c45f3b" xlink:to="loc_us-gaap_RestructuringPlanAxis_01a0a47f-597a-70ed-8953-14671010d78c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a0a47f-597a-70ed-8953-14671010d78c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a0a47f-597a-70ed-8953-14671010d78c" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a0a47f-597a-70ed-8953-14671010d78c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a0a47f-597a-729a-82bb-6f03a0fbeb28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a0a47f-597a-70ed-8953-14671010d78c" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a0a47f-597a-729a-82bb-6f03a0fbeb28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_RelocationOfCorporateHeadquartersMember_01a0a47f-597a-7ec1-ab8e-32d3af8c9141" xlink:href="kbh-20260831.xsd#kbh_RelocationOfCorporateHeadquartersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_01a0a47f-597a-729a-82bb-6f03a0fbeb28" xlink:to="loc_kbh_RelocationOfCorporateHeadquartersMember_01a0a47f-597a-7ec1-ab8e-32d3af8c9141" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationRevenueAbstract_019f48e4-9015-7527-8c7c-cb3b85f71aab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationRevenueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_SegmentReportingInformationRevenueAbstract_019f48e4-9015-7527-8c7c-cb3b85f71aab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f48e4-9015-7578-b1cc-8b0375e1a223" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract_019f48e4-9015-7527-8c7c-cb3b85f71aab" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f48e4-9015-7578-b1cc-8b0375e1a223" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019f48e4-9015-7240-9c0a-90d87f2cb4dc" 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_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019f48e4-9015-7240-9c0a-90d87f2cb4dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_InventoryImpairmentsAndLandOptionContractAbandonments_019f48e4-9015-7819-9cf6-ebaf0e673295" xlink:href="kbh-20260831.xsd#kbh_InventoryImpairmentsAndLandOptionContractAbandonments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_kbh_InventoryImpairmentsAndLandOptionContractAbandonments_019f48e4-9015-7819-9cf6-ebaf0e673295" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019f48e4-9015-7444-ad55-fba98c216336" 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_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_GrossProfit_019f48e4-9015-7444-ad55-fba98c216336" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketingAndAdvertisingExpense_019f48e4-9015-7d5c-84db-d8784f94c3dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MarketingAndAdvertisingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_MarketingAndAdvertisingExpense_019f48e4-9015-7d5c-84db-d8784f94c3dd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesCommissionsAndFees_019f48e4-9015-70cb-9919-c02407286d2c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SalesCommissionsAndFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_SalesCommissionsAndFees_019f48e4-9015-70cb-9919-c02407286d2c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_019f48e4-9015-731e-8f65-79ff98444073" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_019f48e4-9015-731e-8f65-79ff98444073" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019f48e4-9015-78f5-9fc2-46e87de54faa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_OperatingIncomeLoss_019f48e4-9015-78f5-9fc2-46e87de54faa" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019f48e4-9015-7b23-aafb-98480ecb2610" 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_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019f48e4-9015-7b23-aafb-98480ecb2610" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019f48e4-9015-77c7-99c9-599840bf4d20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019f48e4-9015-77c7-99c9-599840bf4d20" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_HousingGrossProfitMarginAsAPercentageOfHousingRevenues_019f48e4-9015-7ea5-ac37-2cd338b3cc2b" xlink:href="kbh-20260831.xsd#kbh_HousingGrossProfitMarginAsAPercentageOfHousingRevenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_kbh_HousingGrossProfitMarginAsAPercentageOfHousingRevenues_019f48e4-9015-7ea5-ac37-2cd338b3cc2b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019f48e4-9015-7ec7-a400-8505ac152d3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_RestructuringCharges_019f48e4-9015-7ec7-a400-8505ac152d3c" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiRealizedGainLoss_01a0a47f-8534-7ca4-8267-cc1f9c8424ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFvNiRealizedGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_EquitySecuritiesFvNiRealizedGainLoss_01a0a47f-8534-7ca4-8267-cc1f9c8424ba" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019f48e4-9015-71e1-ba51-072410fe6c6e" 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_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019f48e4-9015-71e1-ba51-072410fe6c6e" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryOperativeBuilders_019f48e4-9015-7d9d-b14a-33eb4632faa2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryOperativeBuilders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_InventoryOperativeBuilders_019f48e4-9015-7d9d-b14a-33eb4632faa2" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_019f48e4-9015-7892-8225-a96dfc2e2345" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_019f48e4-9015-7892-8225-a96dfc2e2345" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019f48e4-9015-7b25-afcd-656cc1d59e81" 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_019f48e4-9015-7088-a8cc-32fee5e512c1" xlink:to="loc_us-gaap_Assets_019f48e4-9015-7b25-afcd-656cc1d59e81" xlink:type="arc" order="16"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/FinancialServicesScheduleofIncomeLossDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#FinancialServicesScheduleofIncomeLossDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/FinancialServicesScheduleofIncomeLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-760e-9203-57758deee625" 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_019f48e4-9015-7f92-966b-e35fcac94695" 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_019f48e4-9015-760e-9203-57758deee625" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f48e4-9015-7f92-966b-e35fcac94695" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-9015-7f7b-8000-20eb25580d41" 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_019f48e4-9015-7f92-966b-e35fcac94695" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-9015-7f7b-8000-20eb25580d41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7f7b-8000-20eb25580d41_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_019f48e4-9015-7f7b-8000-20eb25580d41" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7f7b-8000-20eb25580d41_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-76a6-a8bc-433e34caaae8" 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_019f48e4-9015-7f7b-8000-20eb25580d41" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-76a6-a8bc-433e34caaae8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServiceMember_019f48e4-9015-704c-a67b-dc2aff0123be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-76a6-a8bc-433e34caaae8" xlink:to="loc_us-gaap_FinancialServiceMember_019f48e4-9015-704c-a67b-dc2aff0123be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_FinancialServicesIncomeLossAbstract_019f48e4-9015-77a2-a676-0249c31fcbfc" xlink:href="kbh-20260831.xsd#kbh_FinancialServicesIncomeLossAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-760e-9203-57758deee625" xlink:to="loc_kbh_FinancialServicesIncomeLossAbstract_019f48e4-9015-77a2-a676-0249c31fcbfc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_019f48e4-9015-78f3-9f07-5c95b1587a56" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_FinancialServicesIncomeLossAbstract_019f48e4-9015-77a2-a676-0249c31fcbfc" xlink:to="loc_us-gaap_RevenuesAbstract_019f48e4-9015-78f3-9f07-5c95b1587a56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuranceCommissionsAndFees_019f48e4-9015-7877-91eb-cc4438d051bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InsuranceCommissionsAndFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_019f48e4-9015-78f3-9f07-5c95b1587a56" xlink:to="loc_us-gaap_InsuranceCommissionsAndFees_019f48e4-9015-7877-91eb-cc4438d051bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_TitleServices_019f48e4-9015-75a7-a175-397358d77ba5" xlink:href="kbh-20260831.xsd#kbh_TitleServices"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_019f48e4-9015-78f3-9f07-5c95b1587a56" xlink:to="loc_kbh_TitleServices_019f48e4-9015-75a7-a175-397358d77ba5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f48e4-9015-7f84-9fd9-c8cb2284daca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_019f48e4-9015-78f3-9f07-5c95b1587a56" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f48e4-9015-7f84-9fd9-c8cb2284daca" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServicesCostsAbstract_019f48e4-9015-71fd-b45b-a70b9b045992" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServicesCostsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_FinancialServicesIncomeLossAbstract_019f48e4-9015-77a2-a676-0249c31fcbfc" xlink:to="loc_us-gaap_FinancialServicesCostsAbstract_019f48e4-9015-71fd-b45b-a70b9b045992" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019f48e4-9015-7fa2-9906-ac529b6ef810" 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_FinancialServicesCostsAbstract_019f48e4-9015-71fd-b45b-a70b9b045992" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019f48e4-9015-7fa2-9906-ac529b6ef810" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019f48e4-9015-7883-8334-a1f53766698c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_FinancialServicesIncomeLossAbstract_019f48e4-9015-77a2-a676-0249c31fcbfc" xlink:to="loc_us-gaap_OperatingIncomeLoss_019f48e4-9015-7883-8334-a1f53766698c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019f48e4-9015-788a-99bc-e5ef3d01ca34" 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_kbh_FinancialServicesIncomeLossAbstract_019f48e4-9015-77a2-a676-0249c31fcbfc" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019f48e4-9015-788a-99bc-e5ef3d01ca34" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019f48e4-9015-7414-8bd3-ac62310ed234" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_FinancialServicesIncomeLossAbstract_019f48e4-9015-77a2-a676-0249c31fcbfc" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019f48e4-9015-7414-8bd3-ac62310ed234" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/FinancialServicesScheduleofAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#FinancialServicesScheduleofAssetsandLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/FinancialServicesScheduleofAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-731c-becf-55fd77271712" 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_019f48e4-9015-7c57-be75-078419124643" 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_019f48e4-9015-731c-becf-55fd77271712" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f48e4-9015-7c57-be75-078419124643" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-9015-7347-8830-8c8598ec57ef" 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_019f48e4-9015-7c57-be75-078419124643" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-9015-7347-8830-8c8598ec57ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7347-8830-8c8598ec57ef_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_019f48e4-9015-7347-8830-8c8598ec57ef" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7347-8830-8c8598ec57ef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7cdd-bdc2-05aa787d80c7" 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_019f48e4-9015-7347-8830-8c8598ec57ef" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7cdd-bdc2-05aa787d80c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServiceMember_019f48e4-9015-7448-92f4-af0b1b418855" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7cdd-bdc2-05aa787d80c7" xlink:to="loc_us-gaap_FinancialServiceMember_019f48e4-9015-7448-92f4-af0b1b418855" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_FinancialServicesAssetsLiabilitiesAbstract_019f48e4-9015-7700-9ff4-cedaa0cdf943" xlink:href="kbh-20260831.xsd#kbh_FinancialServicesAssetsLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-9015-731c-becf-55fd77271712" xlink:to="loc_kbh_FinancialServicesAssetsLiabilitiesAbstract_019f48e4-9015-7700-9ff4-cedaa0cdf943" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_019f48e4-9015-71e0-8d42-b4ea9f37e3d8" 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_kbh_FinancialServicesAssetsLiabilitiesAbstract_019f48e4-9015-7700-9ff4-cedaa0cdf943" xlink:to="loc_us-gaap_AssetsAbstract_019f48e4-9015-71e0-8d42-b4ea9f37e3d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019f48e4-9015-75fb-902c-9f6f20734539" 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_019f48e4-9015-71e0-8d42-b4ea9f37e3d8" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019f48e4-9015-75fb-902c-9f6f20734539" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndNotesReceivableNet_019f48e4-9015-7cc2-9279-727ff9d9b7a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsAndNotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f48e4-9015-71e0-8d42-b4ea9f37e3d8" xlink:to="loc_us-gaap_AccountsAndNotesReceivableNet_019f48e4-9015-7cc2-9279-727ff9d9b7a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_019f48e4-9015-7292-9aea-aa72beef41dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f48e4-9015-71e0-8d42-b4ea9f37e3d8" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_019f48e4-9015-7292-9aea-aa72beef41dd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_019f48e4-9015-7ec9-99f1-b4d334d2b3c1" 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_019f48e4-9015-71e0-8d42-b4ea9f37e3d8" xlink:to="loc_us-gaap_OtherAssets_019f48e4-9015-7ec9-99f1-b4d334d2b3c1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019f48e4-9015-7163-9bc5-459228b5c61d" 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_019f48e4-9015-71e0-8d42-b4ea9f37e3d8" xlink:to="loc_us-gaap_Assets_019f48e4-9015-7163-9bc5-459228b5c61d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_019f48e4-9015-7cb5-bbce-f23bd572a0b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_FinancialServicesAssetsLiabilitiesAbstract_019f48e4-9015-7700-9ff4-cedaa0cdf943" xlink:to="loc_us-gaap_LiabilitiesAbstract_019f48e4-9015-7cb5-bbce-f23bd572a0b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_019f48e4-9015-7f90-b8e1-a4fc4b74dbc1" 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_LiabilitiesAbstract_019f48e4-9015-7cb5-bbce-f23bd572a0b4" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_019f48e4-9015-7f90-b8e1-a4fc4b74dbc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServicesLiabilities_019f48e4-9015-78cf-856b-ca10b9d0358f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServicesLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_019f48e4-9015-7cb5-bbce-f23bd572a0b4" xlink:to="loc_us-gaap_FinancialServicesLiabilities_019f48e4-9015-78cf-856b-ca10b9d0358f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_019f48e4-9015-7b0e-b3a0-6f39ae5a18d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerAssetNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_FinancialServicesAssetsLiabilitiesAbstract_019f48e4-9015-7700-9ff4-cedaa0cdf943" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_019f48e4-9015-7b0e-b3a0-6f39ae5a18d1" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/ReceivablesDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#ReceivablesDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/ReceivablesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f48e4-9015-78b8-b6cb-7d0081394743" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019f48e4-9015-76ba-a10a-0bf89fa822d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f48e4-9015-78b8-b6cb-7d0081394743" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019f48e4-9015-76ba-a10a-0bf89fa822d1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-9015-7dc3-aede-bd588b35b52f" 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_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019f48e4-9015-76ba-a10a-0bf89fa822d1" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-9015-7dc3-aede-bd588b35b52f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7dc3-aede-bd588b35b52f_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_019f48e4-9015-7dc3-aede-bd588b35b52f" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7dc3-aede-bd588b35b52f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7f22-8f02-2b9153005cb1" 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_019f48e4-9015-7dc3-aede-bd588b35b52f" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7f22-8f02-2b9153005cb1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeBuildingMember_019f48e4-9015-7280-8e9b-110aa47d79cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7f22-8f02-2b9153005cb1" xlink:to="loc_us-gaap_HomeBuildingMember_019f48e4-9015-7280-8e9b-110aa47d79cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_UtilityandMunicipalityReceivable_019f48e4-9015-78e9-8d28-9ef7847ba890" xlink:href="kbh-20260831.xsd#kbh_UtilityandMunicipalityReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f48e4-9015-78b8-b6cb-7d0081394743" xlink:to="loc_kbh_UtilityandMunicipalityReceivable_019f48e4-9015-78e9-8d28-9ef7847ba890" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyReceivable_019f48e4-9015-71b9-9824-45c337fb1540" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f48e4-9015-78b8-b6cb-7d0081394743" xlink:to="loc_us-gaap_LossContingencyReceivable_019f48e4-9015-71b9-9824-45c337fb1540" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsAssets_019f48e4-9015-721f-beef-3f9f19829733" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositsAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f48e4-9015-78b8-b6cb-7d0081394743" xlink:to="loc_us-gaap_DepositsAssets_019f48e4-9015-721f-beef-3f9f19829733" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReceivable_019f48e4-9015-70f3-891a-3b73fa50a17b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f48e4-9015-78b8-b6cb-7d0081394743" xlink:to="loc_us-gaap_IncomeTaxReceivable_019f48e4-9015-70f3-891a-3b73fa50a17b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivables_019f48e4-9015-7921-a40e-fe4b59604a34" 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_AccountsNotesAndLoansReceivableLineItems_019f48e4-9015-78b8-b6cb-7d0081394743" xlink:to="loc_us-gaap_OtherReceivables_019f48e4-9015-7921-a40e-fe4b59604a34" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGross_019f48e4-9015-7ddd-aac6-6bcc0550c717" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f48e4-9015-78b8-b6cb-7d0081394743" xlink:to="loc_us-gaap_AccountsReceivableGross_019f48e4-9015-7ddd-aac6-6bcc0550c717" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_019f48e4-9015-7a1f-b82a-7e6896609749" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f48e4-9015-78b8-b6cb-7d0081394743" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_019f48e4-9015-7a1f-b82a-7e6896609749" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndNotesReceivableNet_019f48e4-9015-7488-a464-ae412fe4021b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsAndNotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f48e4-9015-78b8-b6cb-7d0081394743" xlink:to="loc_us-gaap_AccountsAndNotesReceivableNet_019f48e4-9015-7488-a464-ae412fe4021b" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/InventoryImpairmentsandLandOptionContractAbandonmentsNarrativeDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#InventoryImpairmentsandLandOptionContractAbandonmentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/InventoryImpairmentsandLandOptionContractAbandonmentsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f48e4-9015-7820-9305-df77031f289d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f48e4-9015-7468-b787-7893e85d5617" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f48e4-9015-7820-9305-df77031f289d" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f48e4-9015-7468-b787-7893e85d5617" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-9015-78f7-893a-b9f3175a08c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f48e4-9015-7468-b787-7893e85d5617" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-9015-78f7-893a-b9f3175a08c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_019f48e4-9015-78f7-893a-b9f3175a08c8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-9015-78f7-893a-b9f3175a08c8" xlink:to="loc_us-gaap_LossContingencyNatureDomain_019f48e4-9015-78f7-893a-b9f3175a08c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_019f48e4-9015-7412-86ca-3fa7a3cbf2a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-9015-78f7-893a-b9f3175a08c8" xlink:to="loc_us-gaap_LossContingencyNatureDomain_019f48e4-9015-7412-86ca-3fa7a3cbf2a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_LandOptionContractAbandonmentMember_019f48e4-9015-7706-90e6-678e21a18084" xlink:href="kbh-20260831.xsd#kbh_LandOptionContractAbandonmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_019f48e4-9015-7412-86ca-3fa7a3cbf2a3" xlink:to="loc_kbh_LandOptionContractAbandonmentMember_019f48e4-9015-7706-90e6-678e21a18084" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_NumberOfActiveLandParcelsOrCommunitiesEvaluatedForRecoverability_019f48e4-9015-71d9-acc8-b11b1615c2e4" xlink:href="kbh-20260831.xsd#kbh_NumberOfActiveLandParcelsOrCommunitiesEvaluatedForRecoverability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f48e4-9015-7820-9305-df77031f289d" xlink:to="loc_kbh_NumberOfActiveLandParcelsOrCommunitiesEvaluatedForRecoverability_019f48e4-9015-71d9-acc8-b11b1615c2e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_CarryingValueOfCommunitiesOrLandParcelsEvaluatedForImpairment_019f48e4-9015-770d-a4a7-395580168642" xlink:href="kbh-20260831.xsd#kbh_CarryingValueOfCommunitiesOrLandParcelsEvaluatedForImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f48e4-9015-7820-9305-df77031f289d" xlink:to="loc_kbh_CarryingValueOfCommunitiesOrLandParcelsEvaluatedForImpairment_019f48e4-9015-770d-a4a7-395580168642" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfRealEstate_019f48e4-9015-7122-8234-574ab7397d0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ImpairmentOfRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f48e4-9015-7820-9305-df77031f289d" xlink:to="loc_us-gaap_ImpairmentOfRealEstate_019f48e4-9015-7122-8234-574ab7397d0c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_NumberOfCommunitiesImpaired_01a1119b-cfc5-777d-8f7e-d9912f1ccabd" xlink:href="kbh-20260831.xsd#kbh_NumberOfCommunitiesImpaired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f48e4-9015-7820-9305-df77031f289d" xlink:to="loc_kbh_NumberOfCommunitiesImpaired_01a1119b-cfc5-777d-8f7e-d9912f1ccabd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_AggregateCarryingValueOfInventoryImpactedByPretaxNoncashInventoryImpairmentCharges_019f48e4-9015-71ce-9413-838fe5b84940" xlink:href="kbh-20260831.xsd#kbh_AggregateCarryingValueOfInventoryImpactedByPretaxNoncashInventoryImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f48e4-9015-7820-9305-df77031f289d" xlink:to="loc_kbh_AggregateCarryingValueOfInventoryImpactedByPretaxNoncashInventoryImpairmentCharges_019f48e4-9015-71ce-9413-838fe5b84940" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_NumberOfCommunitiesAndVariousOtherLandParcelsImpactedByPretaxNoncashInventoryImpairmentCharges_019f48e4-9015-7b15-a51c-3685324d98ff" xlink:href="kbh-20260831.xsd#kbh_NumberOfCommunitiesAndVariousOtherLandParcelsImpactedByPretaxNoncashInventoryImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f48e4-9015-7820-9305-df77031f289d" xlink:to="loc_kbh_NumberOfCommunitiesAndVariousOtherLandParcelsImpactedByPretaxNoncashInventoryImpairmentCharges_019f48e4-9015-7b15-a51c-3685324d98ff" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossOnContractTermination_019f48e4-9015-7673-9617-2efb1e2ba8d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossOnContractTermination"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f48e4-9015-7820-9305-df77031f289d" xlink:to="loc_us-gaap_LossOnContractTermination_019f48e4-9015-7673-9617-2efb1e2ba8d1" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/InventoryImpairmentsandLandOptionContractAbandonmentsValuationInputsDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#InventoryImpairmentsandLandOptionContractAbandonmentsValuationInputsDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/InventoryImpairmentsandLandOptionContractAbandonmentsValuationInputsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a03dad-623b-7312-89be-489b70571340" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a03dac-c0a4-7c7d-9e64-3a9b4c64e548" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a03dad-623b-7312-89be-489b70571340" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a03dac-c0a4-7c7d-9e64-3a9b4c64e548" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a03db0-9daa-7973-ab1e-749fb0c2f376" 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_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a03dac-c0a4-7c7d-9e64-3a9b4c64e548" xlink:to="loc_srt_RangeAxis_01a03db0-9daa-7973-ab1e-749fb0c2f376" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a03db0-9daa-7973-ab1e-749fb0c2f376_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_01a03db0-9daa-7973-ab1e-749fb0c2f376" xlink:to="loc_srt_RangeMember_01a03db0-9daa-7973-ab1e-749fb0c2f376_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a03db0-9daa-7e02-afd4-03ae298a3c58" 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_01a03db0-9daa-7973-ab1e-749fb0c2f376" xlink:to="loc_srt_RangeMember_01a03db0-9daa-7e02-afd4-03ae298a3c58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a03db0-9daa-7957-be09-09beca5397ec" 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_01a03db0-9daa-7e02-afd4-03ae298a3c58" xlink:to="loc_srt_MinimumMember_01a03db0-9daa-7957-be09-09beca5397ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a03db0-9daa-7980-a178-b2aceff7128a" 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_01a03db0-9daa-7e02-afd4-03ae298a3c58" xlink:to="loc_srt_MaximumMember_01a03db0-9daa-7980-a178-b2aceff7128a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_FairValueEstimateInputAverageSellingPrice_019f48e4-9015-7528-8698-a3df970e6c35" xlink:href="kbh-20260831.xsd#kbh_FairValueEstimateInputAverageSellingPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a03dad-623b-7312-89be-489b70571340" xlink:to="loc_kbh_FairValueEstimateInputAverageSellingPrice_019f48e4-9015-7528-8698-a3df970e6c35" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_FairValueEstimateInputDeliveryForPeriod_019f48e4-9015-7b21-8b61-9d818bfbba76" xlink:href="kbh-20260831.xsd#kbh_FairValueEstimateInputDeliveryForPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a03dad-623b-7312-89be-489b70571340" xlink:to="loc_kbh_FairValueEstimateInputDeliveryForPeriod_019f48e4-9015-7b21-8b61-9d818bfbba76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_DiscountRatePercent_019f48e4-9015-78d6-a580-9539e035a4de" xlink:href="kbh-20260831.xsd#kbh_DiscountRatePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a03dad-623b-7312-89be-489b70571340" xlink:to="loc_kbh_DiscountRatePercent_019f48e4-9015-78d6-a580-9539e035a4de" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/VariableInterestEntitiesNarrativeDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#VariableInterestEntitiesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/VariableInterestEntitiesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_019f48e4-9015-7cc6-9bf9-8c0cb4b37851" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_019f48e4-9015-717b-88d8-0756e513498e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_019f48e4-9015-7cc6-9bf9-8c0cb4b37851" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_019f48e4-9015-717b-88d8-0756e513498e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_019f48e4-9015-7578-9d8f-6bda15da7a75" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_019f48e4-9015-717b-88d8-0756e513498e" xlink:to="loc_srt_ConsolidatedEntitiesAxis_019f48e4-9015-7578-9d8f-6bda15da7a75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-7578-9d8f-6bda15da7a75_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_019f48e4-9015-7578-9d8f-6bda15da7a75" xlink:to="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-7578-9d8f-6bda15da7a75_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-7de2-9e33-f40cf0d6a432" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_019f48e4-9015-7578-9d8f-6bda15da7a75" xlink:to="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-7de2-9e33-f40cf0d6a432" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_019f48e4-9015-756e-bcac-1cf46fbaeea7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-7de2-9e33-f40cf0d6a432" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_019f48e4-9015-756e-bcac-1cf46fbaeea7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_NumberOfInvestmentsInUnconsolidatedJointVentures_019f48e4-9015-756e-bb2b-078c9b33f594" xlink:href="kbh-20260831.xsd#kbh_NumberOfInvestmentsInUnconsolidatedJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_019f48e4-9015-7cc6-9bf9-8c0cb4b37851" xlink:to="loc_kbh_NumberOfInvestmentsInUnconsolidatedJointVentures_019f48e4-9015-756e-bb2b-078c9b33f594" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_AcquisitionCostsRelatedToLandOptionContractsAndOtherSimilarContracts_019f48e4-9015-7863-a684-d05b54262365" xlink:href="kbh-20260831.xsd#kbh_AcquisitionCostsRelatedToLandOptionContractsAndOtherSimilarContracts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_019f48e4-9015-7cc6-9bf9-8c0cb4b37851" xlink:to="loc_kbh_AcquisitionCostsRelatedToLandOptionContractsAndOtherSimilarContracts_019f48e4-9015-7863-a684-d05b54262365" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_IncreaseInInventoriesAndAccruedExpensesAndOtherLiabilitiesDueToLandOptionAndOtherSimilarContracts_019f48e4-9015-7b0c-91a4-28ef78373f03" xlink:href="kbh-20260831.xsd#kbh_IncreaseInInventoriesAndAccruedExpensesAndOtherLiabilitiesDueToLandOptionAndOtherSimilarContracts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_019f48e4-9015-7cc6-9bf9-8c0cb4b37851" xlink:to="loc_kbh_IncreaseInInventoriesAndAccruedExpensesAndOtherLiabilitiesDueToLandOptionAndOtherSimilarContracts_019f48e4-9015-7b0c-91a4-28ef78373f03" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/VariableInterestEntitiesScheduleofVariableInterestEntitiesDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#VariableInterestEntitiesScheduleofVariableInterestEntitiesDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/VariableInterestEntitiesScheduleofVariableInterestEntitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_019f48e4-9015-7605-9dc6-84dfb10cf413" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_019f48e4-9015-7209-ad5c-784ed5dcc209" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_019f48e4-9015-7605-9dc6-84dfb10cf413" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_019f48e4-9015-7209-ad5c-784ed5dcc209" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_019f48e4-9015-7f99-b169-bb0efab2401b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_019f48e4-9015-7209-ad5c-784ed5dcc209" xlink:to="loc_srt_ConsolidatedEntitiesAxis_019f48e4-9015-7f99-b169-bb0efab2401b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-7f99-b169-bb0efab2401b_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_019f48e4-9015-7f99-b169-bb0efab2401b" xlink:to="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-7f99-b169-bb0efab2401b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-73c4-a396-e7bd8086b434" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_019f48e4-9015-7f99-b169-bb0efab2401b" xlink:to="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-73c4-a396-e7bd8086b434" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_019f48e4-9015-7e03-b660-f68a1f865390" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-73c4-a396-e7bd8086b434" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_019f48e4-9015-7e03-b660-f68a1f865390" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_NonVIELandOptionContractsAndOtherSimilarContractsMember_019f48e4-9015-71cf-acc4-b76d4e8ee17a" xlink:href="kbh-20260831.xsd#kbh_NonVIELandOptionContractsAndOtherSimilarContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_019f48e4-9015-73c4-a396-e7bd8086b434" xlink:to="loc_kbh_NonVIELandOptionContractsAndOtherSimilarContractsMember_019f48e4-9015-71cf-acc4-b76d4e8ee17a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_CashDepositsOnLandOptionAndOtherSimilarContracts_019f48e4-9015-7ec1-9706-db426414b8ef" xlink:href="kbh-20260831.xsd#kbh_CashDepositsOnLandOptionAndOtherSimilarContracts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_019f48e4-9015-7605-9dc6-84dfb10cf413" xlink:to="loc_kbh_CashDepositsOnLandOptionAndOtherSimilarContracts_019f48e4-9015-7ec1-9706-db426414b8ef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_AggregatePurchasePriceAssociatedWithLandOptionAndOtherSimilarContracts_019f48e4-9015-754f-82a9-8d6074ae4790" xlink:href="kbh-20260831.xsd#kbh_AggregatePurchasePriceAssociatedWithLandOptionAndOtherSimilarContracts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_019f48e4-9015-7605-9dc6-84dfb10cf413" xlink:to="loc_kbh_AggregatePurchasePriceAssociatedWithLandOptionAndOtherSimilarContracts_019f48e4-9015-754f-82a9-8d6074ae4790" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/InvestmentsinUnconsolidatedJointVenturesDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#InvestmentsinUnconsolidatedJointVenturesDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/InvestmentsinUnconsolidatedJointVenturesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7e45-a1a5-320566bcd5c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7e45-a1a5-320566bcd5c0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_019f48e4-9015-7ff0-9a9e-b327b01a3fd9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7e45-a1a5-320566bcd5c0" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_019f48e4-9015-7ff0-9a9e-b327b01a3fd9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_019f48e4-9015-7ff0-9a9e-b327b01a3fd9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_019f48e4-9015-7ff0-9a9e-b327b01a3fd9" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_019f48e4-9015-7ff0-9a9e-b327b01a3fd9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_019f48e4-9015-7d45-a09f-e0ab2e07bb83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_019f48e4-9015-7ff0-9a9e-b327b01a3fd9" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_019f48e4-9015-7d45-a09f-e0ab2e07bb83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember_019f48e4-9015-7e5f-b41a-1243812ad67a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_019f48e4-9015-7d45-a09f-e0ab2e07bb83" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember_019f48e4-9015-7e5f-b41a-1243812ad67a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-9015-7025-9f18-b7fb66fc70a4" 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_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7e45-a1a5-320566bcd5c0" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-9015-7025-9f18-b7fb66fc70a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7025-9f18-b7fb66fc70a4_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_019f48e4-9015-7025-9f18-b7fb66fc70a4" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7025-9f18-b7fb66fc70a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7a57-a557-9dca589a518b" 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_019f48e4-9015-7025-9f18-b7fb66fc70a4" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7a57-a557-9dca589a518b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeBuildingMember_019f48e4-9015-71fc-b468-62bc6893b185" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7a57-a557-9dca589a518b" xlink:to="loc_us-gaap_HomeBuildingMember_019f48e4-9015-71fc-b468-62bc6893b185" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServiceMember_019f48e4-9015-78e8-92d2-43ef9bf5ef41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7a57-a557-9dca589a518b" xlink:to="loc_us-gaap_FinancialServiceMember_019f48e4-9015-78e8-92d2-43ef9bf5ef41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019f48e4-9015-7c06-ba5f-b8869b169eac" 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_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7e45-a1a5-320566bcd5c0" xlink:to="loc_us-gaap_CreditFacilityAxis_019f48e4-9015-7c06-ba5f-b8869b169eac" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-7c06-ba5f-b8869b169eac_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_019f48e4-9015-7c06-ba5f-b8869b169eac" xlink:to="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-7c06-ba5f-b8869b169eac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-71f3-923c-c0e52474be66" 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_019f48e4-9015-7c06-ba5f-b8869b169eac" xlink:to="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-71f3-923c-c0e52474be66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019f48e4-9015-76be-81ba-e0fc4241c0a5" 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_019f48e4-9015-71f3-923c-c0e52474be66" xlink:to="loc_us-gaap_LineOfCreditMember_019f48e4-9015-76be-81ba-e0fc4241c0a5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019f48e4-9015-7961-95be-c9f3cfefd6bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7e45-a1a5-320566bcd5c0" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019f48e4-9015-7961-95be-c9f3cfefd6bd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f48e4-9015-7961-95be-c9f3cfefd6bd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019f48e4-9015-7961-95be-c9f3cfefd6bd" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f48e4-9015-7961-95be-c9f3cfefd6bd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f48e4-9015-7730-b18c-9917c29790dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019f48e4-9015-7961-95be-c9f3cfefd6bd" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f48e4-9015-7730-b18c-9917c29790dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateLockCommitmentsMember_019f48e4-9015-71a7-8225-de189a2efdda" 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_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f48e4-9015-7730-b18c-9917c29790dc" xlink:to="loc_us-gaap_InterestRateLockCommitmentsMember_019f48e4-9015-71a7-8225-de189a2efdda" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019f48e4-9015-7d98-9eb8-84c54a458ce7" 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_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7e45-a1a5-320566bcd5c0" xlink:to="loc_us-gaap_DebtInstrumentAxis_019f48e4-9015-7d98-9eb8-84c54a458ce7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-7d98-9eb8-84c54a458ce7_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_019f48e4-9015-7d98-9eb8-84c54a458ce7" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-7d98-9eb8-84c54a458ce7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-79e8-adf9-b09280096d0d" 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_019f48e4-9015-7d98-9eb8-84c54a458ce7" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-79e8-adf9-b09280096d0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_TermLoanCommitmentMember_019f48e4-9015-7f05-8b9f-d420e84f0f19" xlink:href="kbh-20260831.xsd#kbh_TermLoanCommitmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-79e8-adf9-b09280096d0d" xlink:to="loc_kbh_TermLoanCommitmentMember_019f48e4-9015-7f05-8b9f-d420e84f0f19" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_01a11312-bba1-7d27-8190-7946daa78744" 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_DebtInstrumentNameDomain_019f48e4-9015-79e8-adf9-b09280096d0d" xlink:to="loc_us-gaap_LineOfCreditMember_01a11312-bba1-7d27-8190-7946daa78744" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_01a0a48d-0671-77fa-b13a-de835ea03d0f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f48e4-9015-7e45-a1a5-320566bcd5c0" xlink:to="loc_srt_StatementScenarioAxis_01a0a48d-0671-77fa-b13a-de835ea03d0f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_01a0a48d-0671-77fa-b13a-de835ea03d0f_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_01a0a48d-0671-77fa-b13a-de835ea03d0f" xlink:to="loc_srt_ScenarioUnspecifiedDomain_01a0a48d-0671-77fa-b13a-de835ea03d0f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_01a0a48d-0671-7f2c-a5c5-ad96c3eebfe0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_01a0a48d-0671-77fa-b13a-de835ea03d0f" xlink:to="loc_srt_ScenarioUnspecifiedDomain_01a0a48d-0671-7f2c-a5c5-ad96c3eebfe0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_01a0a48d-0671-7c27-ad7b-64eeb18b5daf" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_01a0a48d-0671-7f2c-a5c5-ad96c3eebfe0" xlink:to="loc_srt_ScenarioForecastMember_01a0a48d-0671-7c27-ad7b-64eeb18b5daf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_NumberOfInvestmentsInUnconsolidatedJointVentures_019f48e4-9015-78e5-a900-233a48e965bb" xlink:href="kbh-20260831.xsd#kbh_NumberOfInvestmentsInUnconsolidatedJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:to="loc_kbh_NumberOfInvestmentsInUnconsolidatedJointVentures_019f48e4-9015-78e5-a900-233a48e965bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_StatementsOfOperationsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-7087-8d69-ad89301079ba" xlink:href="kbh-20260831.xsd#kbh_StatementsOfOperationsOfUnconsolidatedJointVenturesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:to="loc_kbh_StatementsOfOperationsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-7087-8d69-ad89301079ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019f48e4-9015-799a-8c33-7c7155b14145" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_StatementsOfOperationsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-7087-8d69-ad89301079ba" xlink:to="loc_us-gaap_Revenues_019f48e4-9015-799a-8c33-7c7155b14145" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_019f48e4-9015-7792-8492-548cd23c3867" 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_kbh_StatementsOfOperationsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-7087-8d69-ad89301079ba" xlink:to="loc_us-gaap_CostOfRevenue_019f48e4-9015-7792-8492-548cd23c3867" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019f48e4-9015-72a2-bc0a-aeaf0fccc3bb" 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_kbh_StatementsOfOperationsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-7087-8d69-ad89301079ba" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019f48e4-9015-72a2-bc0a-aeaf0fccc3bb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019f48e4-9015-7e1d-86b1-fd8323d982b2" 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_kbh_StatementsOfOperationsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-7087-8d69-ad89301079ba" xlink:to="loc_us-gaap_NetIncomeLoss_019f48e4-9015-7e1d-86b1-fd8323d982b2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_BalanceSheetsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-701b-9ca6-bbe6d766e6bf" xlink:href="kbh-20260831.xsd#kbh_BalanceSheetsOfUnconsolidatedJointVenturesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:to="loc_kbh_BalanceSheetsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-701b-9ca6-bbe6d766e6bf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_019f48e4-9015-73bc-a6a6-b1984868446c" 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_kbh_BalanceSheetsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-701b-9ca6-bbe6d766e6bf" xlink:to="loc_us-gaap_AssetsAbstract_019f48e4-9015-73bc-a6a6-b1984868446c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_019f48e4-9015-7b1c-a207-88a15a79b5ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Cash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f48e4-9015-73bc-a6a6-b1984868446c" xlink:to="loc_us-gaap_Cash_019f48e4-9015-7b1c-a207-88a15a79b5ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019f48e4-9015-7159-86ce-aaa61238b471" 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_019f48e4-9015-73bc-a6a6-b1984868446c" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019f48e4-9015-7159-86ce-aaa61238b471" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgagesHeldForSaleFairValueDisclosure_019f48e4-9015-7de8-9689-33458a6e241b" 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_AssetsAbstract_019f48e4-9015-73bc-a6a6-b1984868446c" xlink:to="loc_us-gaap_MortgagesHeldForSaleFairValueDisclosure_019f48e4-9015-7de8-9689-33458a6e241b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent_019f48e4-9015-7ee8-be06-28fac83a97a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f48e4-9015-73bc-a6a6-b1984868446c" xlink:to="loc_us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent_019f48e4-9015-7ee8-be06-28fac83a97a2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRealEstate_019f48e4-9015-7531-bf3d-4781fec65504" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f48e4-9015-73bc-a6a6-b1984868446c" xlink:to="loc_us-gaap_InventoryRealEstate_019f48e4-9015-7531-bf3d-4781fec65504" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_019f48e4-9015-75e7-9fd2-9c9792c958c4" 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_019f48e4-9015-73bc-a6a6-b1984868446c" xlink:to="loc_us-gaap_OtherAssets_019f48e4-9015-75e7-9fd2-9c9792c958c4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019f48e4-9015-75a5-b845-c4050e515555" 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_019f48e4-9015-73bc-a6a6-b1984868446c" xlink:to="loc_us-gaap_Assets_019f48e4-9015-75a5-b845-c4050e515555" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f48e4-9015-71e4-ba48-bf53b602a44f" 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_kbh_BalanceSheetsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-701b-9ca6-bbe6d766e6bf" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f48e4-9015-71e4-ba48-bf53b602a44f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccountsPayableAndAccruedLiabilities_019f48e4-9015-7f87-96bb-fb2545939476" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAccountsPayableAndAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f48e4-9015-71e4-ba48-bf53b602a44f" xlink:to="loc_us-gaap_OtherAccountsPayableAndAccruedLiabilities_019f48e4-9015-7f87-96bb-fb2545939476" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_FundingFacilities_019f48e4-9015-754e-ab78-caea22a410b2" xlink:href="kbh-20260831.xsd#kbh_FundingFacilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f48e4-9015-71e4-ba48-bf53b602a44f" xlink:to="loc_kbh_FundingFacilities_019f48e4-9015-754e-ab78-caea22a410b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_019f48e4-9015-7f87-9568-fd9fb6115cd1" 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_019f48e4-9015-71e4-ba48-bf53b602a44f" xlink:to="loc_us-gaap_NotesPayable_019f48e4-9015-7f87-9568-fd9fb6115cd1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019f48e4-9015-7e1a-b546-7f7264bf5274" 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_LiabilitiesAndStockholdersEquityAbstract_019f48e4-9015-71e4-ba48-bf53b602a44f" xlink:to="loc_us-gaap_StockholdersEquity_019f48e4-9015-7e1a-b546-7f7264bf5274" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019f48e4-9015-7a2f-aeaf-f7f9c49dacdb" 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_019f48e4-9015-71e4-ba48-bf53b602a44f" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_019f48e4-9015-7a2f-aeaf-f7f9c49dacdb" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCash_019f48e4-9015-7616-9e27-b0e4eca5efde" 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_kbh_BalanceSheetsOfUnconsolidatedJointVenturesAbstract_019f48e4-9015-701b-9ca6-bbe6d766e6bf" xlink:to="loc_us-gaap_RestrictedCash_019f48e4-9015-7616-9e27-b0e4eca5efde" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_JointVentureFormationFairValueOfJointVenture_01a0a497-c474-780b-86b0-7b0921a9d53a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_JointVentureFormationFairValueOfJointVenture"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:to="loc_us-gaap_JointVentureFormationFairValueOfJointVenture_01a0a497-c474-780b-86b0-7b0921a9d53a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019f48e4-9015-735b-9c3d-01bd2af4de3b" 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_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019f48e4-9015-735b-9c3d-01bd2af4de3b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_01a0a494-366a-7134-90bf-7ccddacd249f" 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_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:to="loc_us-gaap_LineOfCredit_01a0a494-366a-7134-90bf-7ccddacd249f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a0a4a1-503b-7474-8f82-bad832582542" 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_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a0a4a1-503b-7474-8f82-bad832582542" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetNotionalAmount_019f48e4-9015-75a3-9605-ab002882a4ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:to="loc_us-gaap_DerivativeAssetNotionalAmount_019f48e4-9015-75a3-9605-ab002882a4ca" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfMortgageLoans_019f48e4-9015-7766-82c9-3e0f6c5dbe45" 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_ScheduleOfEquityMethodInvestmentsLineItems_019f48e4-9015-7236-abf3-f5e27ef886b7" xlink:to="loc_us-gaap_GainLossOnSaleOfMortgageLoans_019f48e4-9015-7766-82c9-3e0f6c5dbe45" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/OtherAssetsDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#OtherAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/OtherAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_kbh_OtherAssetsLineItems_019f48e4-9015-7bdc-936f-8ca42c5c5ba1" xlink:href="kbh-20260831.xsd#kbh_OtherAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShortTermDebtTable_019f48e4-9015-77da-8a68-0ad2ab1f4137" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShortTermDebtTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_kbh_OtherAssetsLineItems_019f48e4-9015-7bdc-936f-8ca42c5c5ba1" xlink:to="loc_us-gaap_ScheduleOfShortTermDebtTable_019f48e4-9015-77da-8a68-0ad2ab1f4137" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-9015-7ba0-85ad-0297f48862eb" 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_ScheduleOfShortTermDebtTable_019f48e4-9015-77da-8a68-0ad2ab1f4137" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-9015-7ba0-85ad-0297f48862eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7ba0-85ad-0297f48862eb_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_019f48e4-9015-7ba0-85ad-0297f48862eb" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7ba0-85ad-0297f48862eb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-750a-be9b-1ee07f933746" 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_019f48e4-9015-7ba0-85ad-0297f48862eb" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-750a-be9b-1ee07f933746" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeBuildingMember_019f48e4-9015-7b42-a78a-89aa982cef24" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-750a-be9b-1ee07f933746" xlink:to="loc_us-gaap_HomeBuildingMember_019f48e4-9015-7b42-a78a-89aa982cef24" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashSurrenderValueOfLifeInsurance_019f48e4-9015-7ae6-bf90-e80984881a96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashSurrenderValueOfLifeInsurance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_OtherAssetsLineItems_019f48e4-9015-7bdc-936f-8ca42c5c5ba1" xlink:to="loc_us-gaap_CashSurrenderValueOfLifeInsurance_019f48e4-9015-7ae6-bf90-e80984881a96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019f48e4-9015-7830-8175-7b47f7eaf7c7" 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_kbh_OtherAssetsLineItems_019f48e4-9015-7bdc-936f-8ca42c5c5ba1" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019f48e4-9015-7830-8175-7b47f7eaf7c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrentAndNoncurrent_019f48e4-9015-7000-9b40-9495a6b74375" 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_kbh_OtherAssetsLineItems_019f48e4-9015-7bdc-936f-8ca42c5c5ba1" xlink:to="loc_us-gaap_PrepaidExpenseCurrentAndNoncurrent_019f48e4-9015-7000-9b40-9495a6b74375" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMiscellaneous_019f48e4-9015-7e07-80ae-8cf5431b8f39" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsMiscellaneous"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_OtherAssetsLineItems_019f48e4-9015-7bdc-936f-8ca42c5c5ba1" xlink:to="loc_us-gaap_OtherAssetsMiscellaneous_019f48e4-9015-7e07-80ae-8cf5431b8f39" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_019f48e4-9015-798c-95af-372a1279a947" 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_kbh_OtherAssetsLineItems_019f48e4-9015-7bdc-936f-8ca42c5c5ba1" xlink:to="loc_us-gaap_OtherAssets_019f48e4-9015-798c-95af-372a1279a947" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent_019f48e4-9015-7f58-86d3-d9fa6c941f4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_OtherAssetsLineItems_019f48e4-9015-7bdc-936f-8ca42c5c5ba1" xlink:to="loc_us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent_019f48e4-9015-7f58-86d3-d9fa6c941f4b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_01a01a44-b7c2-7eb6-8c7f-34525af565d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_OtherAssetsLineItems_019f48e4-9015-7bdc-936f-8ca42c5c5ba1" xlink:to="loc_us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_01a01a44-b7c2-7eb6-8c7f-34525af565d3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfInvestments_01a01a3e-15dc-75a0-ab93-a10e9c8ac5ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_OtherAssetsLineItems_019f48e4-9015-7bdc-936f-8ca42c5c5ba1" xlink:to="loc_us-gaap_GainLossOnSaleOfInvestments_01a01a3e-15dc-75a0-ab93-a10e9c8ac5ea" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/AccruedExpensesandOtherLiabilitiesDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#AccruedExpensesandOtherLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/AccruedExpensesandOtherLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_019f48e4-9015-74cc-9558-2b0850ec4f1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_019f48e4-9015-74cc-9558-2b0850ec4f1a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-9015-7593-b9ed-5b2b0684bf78" 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_LesseeLeaseDescriptionTable_019f48e4-9015-74cc-9558-2b0850ec4f1a" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-9015-7593-b9ed-5b2b0684bf78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7593-b9ed-5b2b0684bf78_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_019f48e4-9015-7593-b9ed-5b2b0684bf78" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-7593-b9ed-5b2b0684bf78_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-9015-753c-b919-3b4a855aca96" 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_019f48e4-9015-7593-b9ed-5b2b0684bf78" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-9015-753c-b919-3b4a855aca96" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeBuildingMember_019f48e4-9015-7072-9445-4f68d942e8d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-9015-753c-b919-3b4a855aca96" xlink:to="loc_us-gaap_HomeBuildingMember_019f48e4-9015-7072-9445-4f68d942e8d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SelfInsuranceandOtherLegalLiabilities_019f48e4-9015-7d65-a752-a9109fbcff96" xlink:href="kbh-20260831.xsd#kbh_SelfInsuranceandOtherLegalLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_kbh_SelfInsuranceandOtherLegalLiabilities_019f48e4-9015-7d65-a752-a9109fbcff96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedEmployeeBenefitsCurrentAndNoncurrent_019f48e4-9015-726d-8f98-5648dfec4165" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedEmployeeBenefitsCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_us-gaap_AccruedEmployeeBenefitsCurrentAndNoncurrent_019f48e4-9015-726d-8f98-5648dfec4165" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandardProductWarrantyAccrual_019f48e4-9015-7119-980f-0efe2db2df17" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StandardProductWarrantyAccrual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_us-gaap_StandardProductWarrantyAccrual_019f48e4-9015-7119-980f-0efe2db2df17" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_Inventoryrelatedliabilities_019f48e4-9015-73a2-8c99-fed9915b3518" xlink:href="kbh-20260831.xsd#kbh_Inventoryrelatedliabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_kbh_Inventoryrelatedliabilities_019f48e4-9015-73a2-8c99-fed9915b3518" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_019f48e4-9015-7095-9d53-4731d7dbe6dc" 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_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_us-gaap_OperatingLeaseLiability_019f48e4-9015-7095-9d53-4731d7dbe6dc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_019f48e4-9015-7888-841b-aa7ee87f63b3" 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_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_us-gaap_ContractWithCustomerLiability_019f48e4-9015-7888-841b-aa7ee87f63b3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_019f48e4-9015-7a75-8d8d-3e78615d4c6e" 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_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_us-gaap_InterestPayableCurrentAndNoncurrent_019f48e4-9015-7a75-8d8d-3e78615d4c6e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_019f48e4-9015-7641-97d1-6b41cc4f7109" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TaxesPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_019f48e4-9015-7641-97d1-6b41cc4f7109" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent_019f48e4-9015-7c1a-95cd-426b2344ae38" 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_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent_019f48e4-9015-7c1a-95cd-426b2344ae38" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_019f48e4-9015-779a-a06b-96962c89b524" 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_LesseeLeaseDescriptionLineItems_019f48e4-9015-7c9f-a8bf-2b9b4e0e7108" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_019f48e4-9015-779a-a06b-96962c89b524" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/NotesPayableScheduleNotesPayableDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#NotesPayableScheduleNotesPayableDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/NotesPayableScheduleNotesPayableDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019f48e4-9015-70e9-8193-4d9d1b0a3b4b" 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_019f48e4-9015-7a24-9684-6177a9136bb0" 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_019f48e4-9015-70e9-8193-4d9d1b0a3b4b" xlink:to="loc_us-gaap_DebtInstrumentTable_019f48e4-9015-7a24-9684-6177a9136bb0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019f48e4-9015-7a91-8106-856250ac66f4" 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_019f48e4-9015-7a24-9684-6177a9136bb0" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019f48e4-9015-7a91-8106-856250ac66f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-7a91-8106-856250ac66f4_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_019f48e4-9015-7a91-8106-856250ac66f4" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-7a91-8106-856250ac66f4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-7407-ab9e-02823acd0c01" 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_019f48e4-9015-7a91-8106-856250ac66f4" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-7407-ab9e-02823acd0c01" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019f48e4-9015-7938-9bce-f5affa4ecae9" 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_LongtermDebtTypeDomain_019f48e4-9015-7407-ab9e-02823acd0c01" xlink:to="loc_us-gaap_LineOfCreditMember_019f48e4-9015-7938-9bce-f5affa4ecae9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_TermLoanMember_019f48e4-9015-710e-ba8b-4313f4e2e9dc" xlink:href="kbh-20260831.xsd#kbh_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-7407-ab9e-02823acd0c01" xlink:to="loc_kbh_TermLoanMember_019f48e4-9015-710e-ba8b-4313f4e2e9dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019f48e4-9015-7973-8ec2-2adc99e25158" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-7407-ab9e-02823acd0c01" xlink:to="loc_us-gaap_SeniorNotesMember_019f48e4-9015-7973-8ec2-2adc99e25158" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_MortgagesAndLandContractsDueToLandSellersAndOtherLoansMember_019f48e4-9015-798d-81e9-e489659b5d7a" xlink:href="kbh-20260831.xsd#kbh_MortgagesAndLandContractsDueToLandSellersAndOtherLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-7407-ab9e-02823acd0c01" xlink:to="loc_kbh_MortgagesAndLandContractsDueToLandSellersAndOtherLoansMember_019f48e4-9015-798d-81e9-e489659b5d7a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019f48e4-9015-7052-83b0-f3f8b9a7e7b2" 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_DebtInstrumentTable_019f48e4-9015-7a24-9684-6177a9136bb0" xlink:to="loc_us-gaap_CreditFacilityAxis_019f48e4-9015-7052-83b0-f3f8b9a7e7b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-7052-83b0-f3f8b9a7e7b2_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_019f48e4-9015-7052-83b0-f3f8b9a7e7b2" xlink:to="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-7052-83b0-f3f8b9a7e7b2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-7e04-ac27-f94a9b8e52de" 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_019f48e4-9015-7052-83b0-f3f8b9a7e7b2" xlink:to="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-7e04-ac27-f94a9b8e52de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019f48e4-9015-7bc9-984a-a42cd3d9a063" 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_019f48e4-9015-7e04-ac27-f94a9b8e52de" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019f48e4-9015-7bc9-984a-a42cd3d9a063" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019f48e4-9015-7497-912e-b0eb17ee0b22" 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_019f48e4-9015-7a24-9684-6177a9136bb0" xlink:to="loc_us-gaap_DebtInstrumentAxis_019f48e4-9015-7497-912e-b0eb17ee0b22" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-7497-912e-b0eb17ee0b22_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_019f48e4-9015-7497-912e-b0eb17ee0b22" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-7497-912e-b0eb17ee0b22_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-76d7-b5da-4bead2090b8a" 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_019f48e4-9015-7497-912e-b0eb17ee0b22" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-76d7-b5da-4bead2090b8a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SeniorUnsecuredTermLoanDueAugust252026Member_019f48e4-9015-7db0-9bbc-73fc1bf79fcf" xlink:href="kbh-20260831.xsd#kbh_SeniorUnsecuredTermLoanDueAugust252026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-76d7-b5da-4bead2090b8a" xlink:to="loc_kbh_SeniorUnsecuredTermLoanDueAugust252026Member_019f48e4-9015-7db0-9bbc-73fc1bf79fcf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SeniorNotesDueTwoThousandTwentySevenAtSixPointEightSevenFivePercentMember_019f48e4-9015-74c4-9214-be734106651b" xlink:href="kbh-20260831.xsd#kbh_SeniorNotesDueTwoThousandTwentySevenAtSixPointEightSevenFivePercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-76d7-b5da-4bead2090b8a" xlink:to="loc_kbh_SeniorNotesDueTwoThousandTwentySevenAtSixPointEightSevenFivePercentMember_019f48e4-9015-74c4-9214-be734106651b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SeniorNotesDueTwoThousandTwentyNineAtFourPointEightPercentMember_019f48e4-9015-7943-bb1e-7a200d5a230c" xlink:href="kbh-20260831.xsd#kbh_SeniorNotesDueTwoThousandTwentyNineAtFourPointEightPercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-76d7-b5da-4bead2090b8a" xlink:to="loc_kbh_SeniorNotesDueTwoThousandTwentyNineAtFourPointEightPercentMember_019f48e4-9015-7943-bb1e-7a200d5a230c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SeniorNotesDueTwoThousandThirtyAtSevenPointTwoFivePercentMember_019f48e4-9015-7de0-bcd9-4413c59230a9" xlink:href="kbh-20260831.xsd#kbh_SeniorNotesDueTwoThousandThirtyAtSevenPointTwoFivePercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-76d7-b5da-4bead2090b8a" xlink:to="loc_kbh_SeniorNotesDueTwoThousandThirtyAtSevenPointTwoFivePercentMember_019f48e4-9015-7de0-bcd9-4413c59230a9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SeniorNotesDueTwoThousandThirtyOneAtFourPointZeroZeroPercentMember_019f48e4-9015-7adc-8030-4b945d1573f6" xlink:href="kbh-20260831.xsd#kbh_SeniorNotesDueTwoThousandThirtyOneAtFourPointZeroZeroPercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-76d7-b5da-4bead2090b8a" xlink:to="loc_kbh_SeniorNotesDueTwoThousandThirtyOneAtFourPointZeroZeroPercentMember_019f48e4-9015-7adc-8030-4b945d1573f6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019f48e4-9015-7627-87de-781ea5bc483b" 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_019f48e4-9015-70e9-8193-4d9d1b0a3b4b" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019f48e4-9015-7627-87de-781ea5bc483b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansPayable_019f48e4-9015-7dec-a765-94eb260058a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesAndLoansPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f48e4-9015-70e9-8193-4d9d1b0a3b4b" xlink:to="loc_us-gaap_NotesAndLoansPayable_019f48e4-9015-7dec-a765-94eb260058a7" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/NotesPayableNarrativesDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#NotesPayableNarrativesDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/NotesPayableNarrativesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019f48e4-9015-7e9a-916b-95ee7954a1ed" 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_019f48e4-9015-7f10-967a-b511198d407c" 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_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_DebtInstrumentTable_019f48e4-9015-7f10-967a-b511198d407c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019f48e4-9015-7950-9c6a-effff3787c9b" 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_DebtInstrumentTable_019f48e4-9015-7f10-967a-b511198d407c" xlink:to="loc_us-gaap_CreditFacilityAxis_019f48e4-9015-7950-9c6a-effff3787c9b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-7950-9c6a-effff3787c9b_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_019f48e4-9015-7950-9c6a-effff3787c9b" xlink:to="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-7950-9c6a-effff3787c9b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-73e1-af54-456bb691bb5a" 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_019f48e4-9015-7950-9c6a-effff3787c9b" xlink:to="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-73e1-af54-456bb691bb5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019f48e4-9015-7ef2-8140-16d87b26b0f5" 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_019f48e4-9015-73e1-af54-456bb691bb5a" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019f48e4-9015-7ef2-8140-16d87b26b0f5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_019f48e4-9015-7cff-8199-fc50ed89c113" 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_019f48e4-9015-73e1-af54-456bb691bb5a" xlink:to="loc_us-gaap_LetterOfCreditMember_019f48e4-9015-7cff-8199-fc50ed89c113" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_LOCFacilitiesMember_019f48e4-9015-77ec-8341-0d462d8ace20" xlink:href="kbh-20260831.xsd#kbh_LOCFacilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019f48e4-9015-73e1-af54-456bb691bb5a" xlink:to="loc_kbh_LOCFacilitiesMember_019f48e4-9015-77ec-8341-0d462d8ace20" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019f48e4-9015-745f-a13d-04cc2f8ca180" 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_DebtInstrumentTable_019f48e4-9015-7f10-967a-b511198d407c" xlink:to="loc_srt_RangeAxis_019f48e4-9015-745f-a13d-04cc2f8ca180" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f48e4-9015-745f-a13d-04cc2f8ca180_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_019f48e4-9015-745f-a13d-04cc2f8ca180" xlink:to="loc_srt_RangeMember_019f48e4-9015-745f-a13d-04cc2f8ca180_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f48e4-9015-79fb-82a4-b337a0bdee9f" 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_019f48e4-9015-745f-a13d-04cc2f8ca180" xlink:to="loc_srt_RangeMember_019f48e4-9015-79fb-82a4-b337a0bdee9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019f48e4-9015-76a7-984d-cc28a5e5eac8" 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_019f48e4-9015-79fb-82a4-b337a0bdee9f" xlink:to="loc_srt_MinimumMember_019f48e4-9015-76a7-984d-cc28a5e5eac8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019f48e4-9015-74bd-bf79-9a1a384c8fe6" 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_019f48e4-9015-79fb-82a4-b337a0bdee9f" xlink:to="loc_srt_MaximumMember_019f48e4-9015-74bd-bf79-9a1a384c8fe6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019f48e4-9015-7d0c-ae4f-894b44997fbd" 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_019f48e4-9015-7f10-967a-b511198d407c" xlink:to="loc_us-gaap_DebtInstrumentAxis_019f48e4-9015-7d0c-ae4f-894b44997fbd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-7d0c-ae4f-894b44997fbd_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_019f48e4-9015-7d0c-ae4f-894b44997fbd" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-7d0c-ae4f-894b44997fbd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-71db-b0ce-278deb3e0ed5" 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_019f48e4-9015-7d0c-ae4f-894b44997fbd" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-71db-b0ce-278deb3e0ed5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_TermLoanMember_019f48e4-9015-7225-b302-6bcfe0a23e9e" xlink:href="kbh-20260831.xsd#kbh_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f48e4-9015-71db-b0ce-278deb3e0ed5" xlink:to="loc_kbh_TermLoanMember_019f48e4-9015-7225-b302-6bcfe0a23e9e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019f48e4-9015-775c-839c-875cfe5e7da3" 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_019f48e4-9015-7f10-967a-b511198d407c" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019f48e4-9015-775c-839c-875cfe5e7da3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-775c-839c-875cfe5e7da3_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_019f48e4-9015-775c-839c-875cfe5e7da3" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-775c-839c-875cfe5e7da3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-7cce-8575-9b3c91cd8262" 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_019f48e4-9015-775c-839c-875cfe5e7da3" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-7cce-8575-9b3c91cd8262" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_TermLoanMember_019f48e4-9015-756d-bd79-7596c607a670" xlink:href="kbh-20260831.xsd#kbh_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-9015-7cce-8575-9b3c91cd8262" xlink:to="loc_kbh_TermLoanMember_019f48e4-9015-756d-bd79-7596c607a670" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_019f48e4-9015-797e-a91c-8a81c158f76f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_019f48e4-9015-797e-a91c-8a81c158f76f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_019f48e4-9015-7d27-89d4-4143e816f6c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_019f48e4-9015-7d27-89d4-4143e816f6c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019f48e4-9015-7d49-9a48-c573ee36a22f" 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_DebtInstrumentLineItems_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019f48e4-9015-7d49-9a48-c573ee36a22f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_019f48e4-9015-7ede-bf2c-53cd265b80f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_019f48e4-9015-7ede-bf2c-53cd265b80f5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_019f48e4-9015-7e4c-aa1a-61508638cc8c" 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_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_LineOfCredit_019f48e4-9015-7e4c-aa1a-61508638cc8c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019f48e4-9015-7f28-803a-4e131eb85887" 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_DebtInstrumentLineItems_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019f48e4-9015-7f28-803a-4e131eb85887" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_019f48e4-9015-7f34-82cf-622310a1f9b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_019f48e4-9015-7f34-82cf-622310a1f9b3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019f48e4-9015-7554-b2cc-d9ae573b24b6" 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_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019f48e4-9015-7554-b2cc-d9ae573b24b6" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtWeightedAverageInterestRate_019f48e4-9015-7a0f-8e24-006cca16857c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_LongtermDebtWeightedAverageInterestRate_019f48e4-9015-7a0f-8e24-006cca16857c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_019f48e4-9015-7ebb-9234-ed355a2e030b" 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_DebtInstrumentLineItems_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_019f48e4-9015-7ebb-9234-ed355a2e030b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCollateralAmount_019f48e4-9015-75d7-9d1d-9b2101c33394" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCollateralAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f48e4-9015-7e9a-916b-95ee7954a1ed" xlink:to="loc_us-gaap_DebtInstrumentCollateralAmount_019f48e4-9015-75d7-9d1d-9b2101c33394" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/FairValueDisclosuresAssetsMeasuredatFairValueonNonrecurringBasisDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#FairValueDisclosuresAssetsMeasuredatFairValueonNonrecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/FairValueDisclosuresAssetsMeasuredatFairValueonNonrecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f48e4-9015-705f-803f-964c5ecf93f7" 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_019f48e4-9015-74dc-a98e-b35c0fdac1e8" 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_019f48e4-9015-705f-803f-964c5ecf93f7" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f48e4-9015-74dc-a98e-b35c0fdac1e8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f48e4-9015-711b-a121-65896b48f741" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f48e4-9015-74dc-a98e-b35c0fdac1e8" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f48e4-9015-711b-a121-65896b48f741" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f48e4-9015-711b-a121-65896b48f741_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f48e4-9015-711b-a121-65896b48f741" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f48e4-9015-711b-a121-65896b48f741_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f48e4-9015-7936-b07b-4f1a4ee0739d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f48e4-9015-711b-a121-65896b48f741" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f48e4-9015-7936-b07b-4f1a4ee0739d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_019f48e4-9015-76b8-89f2-b33f1b204c6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsNonrecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f48e4-9015-7936-b07b-4f1a4ee0739d" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_019f48e4-9015-76b8-89f2-b33f1b204c6a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f48e4-9015-7f96-8291-df306b15d0f8" 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_019f48e4-9015-74dc-a98e-b35c0fdac1e8" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f48e4-9015-7f96-8291-df306b15d0f8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f48e4-9015-7f96-8291-df306b15d0f8_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_019f48e4-9015-7f96-8291-df306b15d0f8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f48e4-9015-7f96-8291-df306b15d0f8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f48e4-9015-7f41-a9c1-cca624359637" 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_019f48e4-9015-7f96-8291-df306b15d0f8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f48e4-9015-7f41-a9c1-cca624359637" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019f48e4-9015-71b7-aa20-a94999232be4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f48e4-9015-7f41-a9c1-cca624359637" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019f48e4-9015-71b7-aa20-a94999232be4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract_019f48e4-90ce-7839-af12-89830156ec5d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f48e4-9015-705f-803f-964c5ecf93f7" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract_019f48e4-90ce-7839-af12-89830156ec5d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_InventoryImpactedbyPretaxNoncashInventoryImpairmentChargesCarryingValue_019f48e4-90ce-7a53-b680-f5678a18fc3a" xlink:href="kbh-20260831.xsd#kbh_InventoryImpactedbyPretaxNoncashInventoryImpairmentChargesCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract_019f48e4-90ce-7839-af12-89830156ec5d" xlink:to="loc_kbh_InventoryImpactedbyPretaxNoncashInventoryImpairmentChargesCarryingValue_019f48e4-90ce-7a53-b680-f5678a18fc3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfRealEstate_019f48e4-90ce-7a61-abb6-def03aef2ae2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ImpairmentOfRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract_019f48e4-90ce-7839-af12-89830156ec5d" xlink:to="loc_us-gaap_ImpairmentOfRealEstate_019f48e4-90ce-7a61-abb6-def03aef2ae2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019f48e4-90ce-79e6-9ed1-d1314203441c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract_019f48e4-90ce-7839-af12-89830156ec5d" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_019f48e4-90ce-79e6-9ed1-d1314203441c" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/FairValueDisclosuresFairValueHierarchyCarryingValuesandEstimatedFairValuesofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#FairValueDisclosuresFairValueHierarchyCarryingValuesandEstimatedFairValuesofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/FairValueDisclosuresFairValueHierarchyCarryingValuesandEstimatedFairValuesofFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019f48e4-90ce-722f-91b0-96e21e8e352f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019f48e4-90ce-737c-8c21-7877463cf486" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019f48e4-90ce-722f-91b0-96e21e8e352f" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019f48e4-90ce-737c-8c21-7877463cf486" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f48e4-90ce-7cfb-b9a8-592a569d61f8" 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_FairValueByBalanceSheetGroupingTable_019f48e4-90ce-737c-8c21-7877463cf486" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f48e4-90ce-7cfb-b9a8-592a569d61f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f48e4-90ce-7cfb-b9a8-592a569d61f8_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_019f48e4-90ce-7cfb-b9a8-592a569d61f8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f48e4-90ce-7cfb-b9a8-592a569d61f8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f48e4-90ce-76fd-bcf4-a9bb44f21fde" 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_019f48e4-90ce-7cfb-b9a8-592a569d61f8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f48e4-90ce-76fd-bcf4-a9bb44f21fde" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019f48e4-90ce-79ba-a7b6-83e4e467674e" 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_019f48e4-90ce-76fd-bcf4-a9bb44f21fde" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019f48e4-90ce-79ba-a7b6-83e4e467674e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019f48e4-90ce-7813-811a-e4bfaf476f4b" 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_FairValueByBalanceSheetGroupingTable_019f48e4-90ce-737c-8c21-7877463cf486" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019f48e4-90ce-7813-811a-e4bfaf476f4b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-90ce-7813-811a-e4bfaf476f4b_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_019f48e4-90ce-7813-811a-e4bfaf476f4b" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-90ce-7813-811a-e4bfaf476f4b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-90ce-7eb2-926e-734941fc353a" 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_019f48e4-90ce-7813-811a-e4bfaf476f4b" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-90ce-7eb2-926e-734941fc353a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019f48e4-90ce-7584-8d60-baa3f47e8b0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019f48e4-90ce-7eb2-926e-734941fc353a" xlink:to="loc_us-gaap_SeniorNotesMember_019f48e4-90ce-7584-8d60-baa3f47e8b0b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019f48e4-90ce-79bc-ba75-79ee27304277" 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_FairValueByBalanceSheetGroupingTable_019f48e4-90ce-737c-8c21-7877463cf486" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019f48e4-90ce-79bc-ba75-79ee27304277" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f48e4-90ce-79bc-ba75-79ee27304277_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_019f48e4-90ce-79bc-ba75-79ee27304277" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f48e4-90ce-79bc-ba75-79ee27304277_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f48e4-90ce-7679-9bc1-eba70480ea29" 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_019f48e4-90ce-79bc-ba75-79ee27304277" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f48e4-90ce-7679-9bc1-eba70480ea29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f48e4-90ce-7527-a9bf-a15aaec287f2" 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_019f48e4-90ce-7679-9bc1-eba70480ea29" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f48e4-90ce-7527-a9bf-a15aaec287f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019f48e4-90ce-7604-b113-dbab4ac9913e" 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_019f48e4-90ce-7527-a9bf-a15aaec287f2" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019f48e4-90ce-7604-b113-dbab4ac9913e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019f48e4-90ce-7c66-9894-3549bfa950c8" 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_019f48e4-90ce-7527-a9bf-a15aaec287f2" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019f48e4-90ce-7c66-9894-3549bfa950c8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_019f48e4-90ce-783b-b79c-982ebd0b03c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019f48e4-90ce-722f-91b0-96e21e8e352f" xlink:to="loc_us-gaap_LongTermDebtFairValue_019f48e4-90ce-783b-b79c-982ebd0b03c3" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/CommitmentsandContingenciesNarrativesDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#CommitmentsandContingenciesNarrativesDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/CommitmentsandContingenciesNarrativesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" 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_019f48e4-90ce-7dcf-b2d5-44beb038996b" 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_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_us-gaap_LossContingenciesTable_019f48e4-90ce-7dcf-b2d5-44beb038996b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019f48e4-90ce-7b9c-afc4-4a359659075e" 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_LossContingenciesTable_019f48e4-90ce-7dcf-b2d5-44beb038996b" xlink:to="loc_srt_RangeAxis_019f48e4-90ce-7b9c-afc4-4a359659075e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f48e4-90ce-7b9c-afc4-4a359659075e_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_019f48e4-90ce-7b9c-afc4-4a359659075e" xlink:to="loc_srt_RangeMember_019f48e4-90ce-7b9c-afc4-4a359659075e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f48e4-90ce-73c6-829f-4b58f38d39f8" 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_019f48e4-90ce-7b9c-afc4-4a359659075e" xlink:to="loc_srt_RangeMember_019f48e4-90ce-73c6-829f-4b58f38d39f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019f48e4-90ce-70bd-8f7c-71d45d4d72af" 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_019f48e4-90ce-73c6-829f-4b58f38d39f8" xlink:to="loc_srt_MinimumMember_019f48e4-90ce-70bd-8f7c-71d45d4d72af" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019f48e4-90ce-7bce-9bb0-61f4b065e55e" 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_019f48e4-90ce-73c6-829f-4b58f38d39f8" xlink:to="loc_srt_MaximumMember_019f48e4-90ce-7bce-9bb0-61f4b065e55e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-90ce-7543-b705-70ed39f4422a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_019f48e4-90ce-7dcf-b2d5-44beb038996b" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-90ce-7543-b705-70ed39f4422a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-7543-b705-70ed39f4422a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-90ce-7543-b705-70ed39f4422a" xlink:to="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-7543-b705-70ed39f4422a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-7340-bb2f-e24000cfbfb8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-90ce-7543-b705-70ed39f4422a" xlink:to="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-7340-bb2f-e24000cfbfb8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DamagesFromProductDefectsMember_019f48e4-90ce-77c4-bfcf-b7a8eac677fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DamagesFromProductDefectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-7340-bb2f-e24000cfbfb8" xlink:to="loc_us-gaap_DamagesFromProductDefectsMember_019f48e4-90ce-77c4-bfcf-b7a8eac677fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantyObligationsMember_019f48e4-90ce-7c2f-9f9a-bd672823316f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantyObligationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-7340-bb2f-e24000cfbfb8" xlink:to="loc_us-gaap_WarrantyObligationsMember_019f48e4-90ce-7c2f-9f9a-bd672823316f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SelfInsuranceMember_019f48e4-90ce-7c07-a215-2dad9250189c" xlink:href="kbh-20260831.xsd#kbh_SelfInsuranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-7340-bb2f-e24000cfbfb8" xlink:to="loc_kbh_SelfInsuranceMember_019f48e4-90ce-7c07-a215-2dad9250189c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019f48e4-90ce-7099-a4aa-aa654f333283" 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_019f48e4-90ce-7dcf-b2d5-44beb038996b" xlink:to="loc_us-gaap_CreditFacilityAxis_019f48e4-90ce-7099-a4aa-aa654f333283" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f48e4-90ce-7099-a4aa-aa654f333283_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_019f48e4-90ce-7099-a4aa-aa654f333283" xlink:to="loc_us-gaap_CreditFacilityDomain_019f48e4-90ce-7099-a4aa-aa654f333283_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f48e4-90ce-7199-92dc-4958670a5ab2" 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_019f48e4-90ce-7099-a4aa-aa654f333283" xlink:to="loc_us-gaap_CreditFacilityDomain_019f48e4-90ce-7199-92dc-4958670a5ab2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_LOCFacilitiesMember_019f48e4-90ce-756e-9a58-01db392f94fd" xlink:href="kbh-20260831.xsd#kbh_LOCFacilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019f48e4-90ce-7199-92dc-4958670a5ab2" xlink:to="loc_kbh_LOCFacilitiesMember_019f48e4-90ce-756e-9a58-01db392f94fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_StructuralWarrantyProvidedByCompany_019f48e4-90ce-7147-9e81-ad89e5c45e86" xlink:href="kbh-20260831.xsd#kbh_StructuralWarrantyProvidedByCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_kbh_StructuralWarrantyProvidedByCompany_019f48e4-90ce-7147-9e81-ad89e5c45e86" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_WarrantyOnElectricalHeatingCoolingPlumbingAndOtherBuildingSystems_019f48e4-90ce-705c-8e03-59fa6b825393" xlink:href="kbh-20260831.xsd#kbh_WarrantyOnElectricalHeatingCoolingPlumbingAndOtherBuildingSystems"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_kbh_WarrantyOnElectricalHeatingCoolingPlumbingAndOtherBuildingSystems_019f48e4-90ce-705c-8e03-59fa6b825393" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_WarrantyForOtherComponentsOfHome_019f48e4-90ce-7621-9a07-ab405c70169d" xlink:href="kbh-20260831.xsd#kbh_WarrantyForOtherComponentsOfHome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_kbh_WarrantyForOtherComponentsOfHome_019f48e4-90ce-7621-9a07-ab405c70169d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_MinimumNumberofAffectedHomesforConstructionDefectClaims_019f48e4-90ce-79c0-a67b-37ef9ba84e34" xlink:href="kbh-20260831.xsd#kbh_MinimumNumberofAffectedHomesforConstructionDefectClaims"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_kbh_MinimumNumberofAffectedHomesforConstructionDefectClaims_019f48e4-90ce-79c0-a67b-37ef9ba84e34" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyReceivable_019f48e4-90ce-7778-acc2-82f7d4a8ac78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_us-gaap_LossContingencyReceivable_019f48e4-90ce-7778-acc2-82f7d4a8ac78" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_DeductiblesForProjectSpecificInsuranceCoverageForConstructionDefectRisk_019f48e4-90ce-7cf2-92b2-ebb6da17214c" xlink:href="kbh-20260831.xsd#kbh_DeductiblesForProjectSpecificInsuranceCoverageForConstructionDefectRisk"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_kbh_DeductiblesForProjectSpecificInsuranceCoverageForConstructionDefectRisk_019f48e4-90ce-7cf2-92b2-ebb6da17214c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_PerformanceBonds_019f48e4-90ce-740c-9a57-7994cc30cab5" xlink:href="kbh-20260831.xsd#kbh_PerformanceBonds"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_kbh_PerformanceBonds_019f48e4-90ce-740c-9a57-7994cc30cab5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_019f48e4-90ce-76f2-8a91-f5cd4a90936d" 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_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_019f48e4-90ce-76f2-8a91-f5cd4a90936d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_LettersofCreditOutstandingTerm_019f48e4-90ce-78f1-8513-4dd12cd27b2e" xlink:href="kbh-20260831.xsd#kbh_LettersofCreditOutstandingTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_kbh_LettersofCreditOutstandingTerm_019f48e4-90ce-78f1-8513-4dd12cd27b2e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_CashDepositsOnLandOptionAndOtherSimilarContracts_019f48e4-90ce-7202-bba2-1073921b8282" xlink:href="kbh-20260831.xsd#kbh_CashDepositsOnLandOptionAndOtherSimilarContracts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_kbh_CashDepositsOnLandOptionAndOtherSimilarContracts_019f48e4-90ce-7202-bba2-1073921b8282" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_AggregatePurchasePriceAssociatedWithLandOptionAndOtherSimilarContracts_019f48e4-90ce-7aa9-a929-c830be9556cc" xlink:href="kbh-20260831.xsd#kbh_AggregatePurchasePriceAssociatedWithLandOptionAndOtherSimilarContracts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7942-ade7-98ffffbf4cbc" xlink:to="loc_kbh_AggregatePurchasePriceAssociatedWithLandOptionAndOtherSimilarContracts_019f48e4-90ce-7aa9-a929-c830be9556cc" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/CommitmentsandContingenciesChangesintheWarrantyandSelfInsuranceLiabilityDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#CommitmentsandContingenciesChangesintheWarrantyandSelfInsuranceLiabilityDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/CommitmentsandContingenciesChangesintheWarrantyandSelfInsuranceLiabilityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7503-b738-6f9762daef40" 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_019f48e4-90ce-7dd2-8c8a-f461f014a269" 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_019f48e4-90ce-7503-b738-6f9762daef40" xlink:to="loc_us-gaap_LossContingenciesTable_019f48e4-90ce-7dd2-8c8a-f461f014a269" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-90ce-72e8-a197-72f557967dbd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_019f48e4-90ce-7dd2-8c8a-f461f014a269" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-90ce-72e8-a197-72f557967dbd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-72e8-a197-72f557967dbd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-90ce-72e8-a197-72f557967dbd" xlink:to="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-72e8-a197-72f557967dbd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-77a4-9b24-e72e417a5bd2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_019f48e4-90ce-72e8-a197-72f557967dbd" xlink:to="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-77a4-9b24-e72e417a5bd2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SelfInsuranceMember_019f48e4-90ce-7b9f-8d7e-22dc25605cb1" xlink:href="kbh-20260831.xsd#kbh_SelfInsuranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_019f48e4-90ce-77a4-9b24-e72e417a5bd2" xlink:to="loc_kbh_SelfInsuranceMember_019f48e4-90ce-7b9f-8d7e-22dc25605cb1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_019f48e4-90ce-7e01-9240-02dc65c789ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MovementInStandardProductWarrantyAccrualRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7503-b738-6f9762daef40" xlink:to="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_019f48e4-90ce-7e01-9240-02dc65c789ee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandardProductWarrantyAccrual_019f48e4-90ce-7508-8dc1-bbfe411b1941" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StandardProductWarrantyAccrual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_019f48e4-90ce-7e01-9240-02dc65c789ee" xlink:to="loc_us-gaap_StandardProductWarrantyAccrual_019f48e4-90ce-7508-8dc1-bbfe411b1941" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandardProductWarrantyAccrualWarrantiesIssued_019f48e4-90ce-73dd-91c5-8c8bf188790c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StandardProductWarrantyAccrualWarrantiesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_019f48e4-90ce-7e01-9240-02dc65c789ee" xlink:to="loc_us-gaap_StandardProductWarrantyAccrualWarrantiesIssued_019f48e4-90ce-73dd-91c5-8c8bf188790c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandardProductWarrantyAccrualPayments_019f48e4-90ce-7fbc-aa4b-c4a6ddf5a5f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StandardProductWarrantyAccrualPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_019f48e4-90ce-7e01-9240-02dc65c789ee" xlink:to="loc_us-gaap_StandardProductWarrantyAccrualPayments_019f48e4-90ce-7fbc-aa4b-c4a6ddf5a5f6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandardProductWarrantyAccrual_019f48e4-90ce-7502-b15a-9f2ac6fc6b60" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StandardProductWarrantyAccrual"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_MovementInSelfInsuranceReserveRollForward_019f48e4-90ce-7205-aac8-0bf77624f663" xlink:href="kbh-20260831.xsd#kbh_MovementInSelfInsuranceReserveRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019f48e4-90ce-7503-b738-6f9762daef40" xlink:to="loc_kbh_MovementInSelfInsuranceReserveRollForward_019f48e4-90ce-7205-aac8-0bf77624f663" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SelfInsuranceReserve_019f48e4-90ce-7146-a86f-3a0e40282ec1" 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_kbh_MovementInSelfInsuranceReserveRollForward_019f48e4-90ce-7205-aac8-0bf77624f663" xlink:to="loc_us-gaap_SelfInsuranceReserve_019f48e4-90ce-7146-a86f-3a0e40282ec1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_ExpensesAssociatedWithSelfInsurance_019f48e4-90ce-77da-8164-cc22aff98b06" xlink:href="kbh-20260831.xsd#kbh_ExpensesAssociatedWithSelfInsurance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_MovementInSelfInsuranceReserveRollForward_019f48e4-90ce-7205-aac8-0bf77624f663" xlink:to="loc_kbh_ExpensesAssociatedWithSelfInsurance_019f48e4-90ce-77da-8164-cc22aff98b06" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_PaymentsforSelfInsurance_019f48e4-90ce-7079-adcc-326f27b93f72" xlink:href="kbh-20260831.xsd#kbh_PaymentsforSelfInsurance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_MovementInSelfInsuranceReserveRollForward_019f48e4-90ce-7205-aac8-0bf77624f663" xlink:to="loc_kbh_PaymentsforSelfInsurance_019f48e4-90ce-7079-adcc-326f27b93f72" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInsuranceLiabilities_019f48e4-90ce-74c3-8793-551d8f7c8cf6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInsuranceLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_MovementInSelfInsuranceReserveRollForward_019f48e4-90ce-7205-aac8-0bf77624f663" xlink:to="loc_us-gaap_IncreaseDecreaseInInsuranceLiabilities_019f48e4-90ce-74c3-8793-551d8f7c8cf6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SelfInsuranceReserve_019f48e4-90ce-7857-8cf0-6e76da7f7126" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SelfInsuranceReserve"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/StockholdersEquityDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#StockholdersEquityDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/StockholdersEquityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f48e4-90ce-7602-b860-6d11ede5f803" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f48e4-90ce-7602-b860-6d11ede5f803" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_019f48e4-90ce-777b-982f-7953187c02ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f48e4-90ce-7602-b860-6d11ede5f803" xlink:to="loc_us-gaap_AwardTypeAxis_019f48e4-90ce-777b-982f-7953187c02ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-777b-982f-7953187c02ae_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_019f48e4-90ce-777b-982f-7953187c02ae" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-777b-982f-7953187c02ae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-7702-8c46-b65dea5250c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_019f48e4-90ce-777b-982f-7953187c02ae" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-7702-8c46-b65dea5250c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_019f48e4-90ce-7b3e-9c72-b6ad60413f65" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-7702-8c46-b65dea5250c3" xlink:to="loc_us-gaap_PerformanceSharesMember_019f48e4-90ce-7b3e-9c72-b6ad60413f65" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_019f48e4-90ce-7897-b91d-a2fd1148d036" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f48e4-90ce-7602-b860-6d11ede5f803" xlink:to="loc_us-gaap_PlanNameAxis_019f48e4-90ce-7897-b91d-a2fd1148d036" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_019f48e4-90ce-7897-b91d-a2fd1148d036_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_019f48e4-90ce-7897-b91d-a2fd1148d036" xlink:to="loc_us-gaap_PlanNameDomain_019f48e4-90ce-7897-b91d-a2fd1148d036_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_019f48e4-90ce-7d18-a284-38ecd19e9508" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_019f48e4-90ce-7897-b91d-a2fd1148d036" xlink:to="loc_us-gaap_PlanNameDomain_019f48e4-90ce-7d18-a284-38ecd19e9508" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_PSU2022Member_019f48e4-90ce-7382-88b5-c7fe1d52143e" xlink:href="kbh-20260831.xsd#kbh_PSU2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_019f48e4-90ce-7d18-a284-38ecd19e9508" xlink:to="loc_kbh_PSU2022Member_019f48e4-90ce-7382-88b5-c7fe1d52143e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramAxis_019f48e4-90ce-7b93-b381-b8b7945d1c0a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f48e4-90ce-7602-b860-6d11ede5f803" xlink:to="loc_srt_ShareRepurchaseProgramAxis_019f48e4-90ce-7b93-b381-b8b7945d1c0a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_019f48e4-90ce-7b93-b381-b8b7945d1c0a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ShareRepurchaseProgramAxis_019f48e4-90ce-7b93-b381-b8b7945d1c0a" xlink:to="loc_srt_ShareRepurchaseProgramDomain_019f48e4-90ce-7b93-b381-b8b7945d1c0a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_019f48e4-90ce-7ad9-880b-13461a2f70d2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ShareRepurchaseProgramAxis_019f48e4-90ce-7b93-b381-b8b7945d1c0a" xlink:to="loc_srt_ShareRepurchaseProgramDomain_019f48e4-90ce-7ad9-880b-13461a2f70d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SharesWithheldtoPayTaxesMember_019f48e4-90ce-7eae-9552-40d2132d41e0" xlink:href="kbh-20260831.xsd#kbh_SharesWithheldtoPayTaxesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_019f48e4-90ce-7ad9-880b-13461a2f70d2" xlink:to="loc_kbh_SharesWithheldtoPayTaxesMember_019f48e4-90ce-7eae-9552-40d2132d41e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_October2025StockRepurchaseProgramMember_019f48e4-90ce-7307-8881-069af8532df2" xlink:href="kbh-20260831.xsd#kbh_October2025StockRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_019f48e4-90ce-7ad9-880b-13461a2f70d2" xlink:to="loc_kbh_October2025StockRepurchaseProgramMember_019f48e4-90ce-7307-8881-069af8532df2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_019f48e4-90ce-7f63-831f-c1f6d17ec6a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_019f48e4-90ce-7f63-831f-c1f6d17ec6a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsMeasurementPeriod_01a0e957-d141-7610-8fb9-9a8fce882ea8" xlink:href="kbh-20260831.xsd#kbh_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsMeasurementPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_kbh_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsMeasurementPeriod_01a0e957-d141-7610-8fb9-9a8fce882ea8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_019f48e4-90ce-7617-85dc-36c85967b06d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_019f48e4-90ce-7617-85dc-36c85967b06d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_019f48e4-90ce-72b0-a17b-e628da9201c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_019f48e4-90ce-72b0-a17b-e628da9201c1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_019f48e4-90ce-7839-b317-168490103e05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_019f48e4-90ce-7839-b317-168490103e05" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_019f48e4-90ce-7b28-9ca0-cae9878f1f9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_019f48e4-90ce-7b28-9ca0-cae9878f1f9e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_019f48e4-90ce-7734-97bf-f24a92fa2845" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_019f48e4-90ce-7734-97bf-f24a92fa2845" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_019f48e4-90ce-7421-8b2b-47edf493f8a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_019f48e4-90ce-7421-8b2b-47edf493f8a4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareCashPaid_019f48e4-90ce-7f74-a941-a8fe366abff4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockDividendsPerShareCashPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_us-gaap_CommonStockDividendsPerShareCashPaid_019f48e4-90ce-7f74-a941-a8fe366abff4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesRetired_019f48e4-90ce-7036-b8d4-8e308f97a047" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockSharesRetired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-7d90-b472-7a88c7677b35" xlink:to="loc_us-gaap_TreasuryStockSharesRetired_019f48e4-90ce-7036-b8d4-8e308f97a047" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/StockBasedCompensationDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#StockBasedCompensationDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/StockBasedCompensationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-731d-909c-93535fa2b7e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f48e4-90ce-7937-a160-cbd6069e10a0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-731d-909c-93535fa2b7e0" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f48e4-90ce-7937-a160-cbd6069e10a0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_019f48e4-90ce-76e7-a360-3c41be5775cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f48e4-90ce-7937-a160-cbd6069e10a0" xlink:to="loc_us-gaap_AwardTypeAxis_019f48e4-90ce-76e7-a360-3c41be5775cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-76e7-a360-3c41be5775cf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_019f48e4-90ce-76e7-a360-3c41be5775cf" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-76e7-a360-3c41be5775cf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-7e7f-8c69-746d2bd7f31e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_019f48e4-90ce-76e7-a360-3c41be5775cf" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-7e7f-8c69-746d2bd7f31e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_019f48e4-90ce-7977-8026-7f036602e5af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-7e7f-8c69-746d2bd7f31e" xlink:to="loc_us-gaap_EmployeeStockOptionMember_019f48e4-90ce-7977-8026-7f036602e5af" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_RestrictedStockandPerformanceUnitSharesMember_019f48e4-90ce-7edd-bae9-f96187b0b10c" xlink:href="kbh-20260831.xsd#kbh_RestrictedStockandPerformanceUnitSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f48e4-90ce-7e7f-8c69-746d2bd7f31e" xlink:to="loc_kbh_RestrictedStockandPerformanceUnitSharesMember_019f48e4-90ce-7edd-bae9-f96187b0b10c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_019f48e4-90ce-741f-baa5-46c9d1366b33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-731d-909c-93535fa2b7e0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_019f48e4-90ce-741f-baa5-46c9d1366b33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_019f48e4-90ce-759c-b881-ab9034b72c3b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-731d-909c-93535fa2b7e0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_019f48e4-90ce-759c-b881-ab9034b72c3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_019f48e4-90ce-7676-afbe-687cc70157e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f48e4-90ce-731d-909c-93535fa2b7e0" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_019f48e4-90ce-7676-afbe-687cc70157e3" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/SupplementalDisclosuretoConsolidatedStatementsofCashFlowsDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#SupplementalDisclosuretoConsolidatedStatementsofCashFlowsDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/SupplementalDisclosuretoConsolidatedStatementsofCashFlowsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-90ce-7efa-92f2-1444b881c83c" 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_019f48e4-90ce-7693-abb5-92a52255debc" 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_019f48e4-90ce-7efa-92f2-1444b881c83c" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f48e4-90ce-7693-abb5-92a52255debc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f48e4-90ce-7c67-8065-4b23de7e6044" 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_019f48e4-90ce-7693-abb5-92a52255debc" xlink:to="loc_srt_ProductOrServiceAxis_019f48e4-90ce-7c67-8065-4b23de7e6044" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-90ce-7c67-8065-4b23de7e6044_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_019f48e4-90ce-7c67-8065-4b23de7e6044" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-90ce-7c67-8065-4b23de7e6044_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f48e4-90ce-7bec-b622-dc7bb30c3b1a" 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_019f48e4-90ce-7c67-8065-4b23de7e6044" xlink:to="loc_srt_ProductsAndServicesDomain_019f48e4-90ce-7bec-b622-dc7bb30c3b1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeBuildingMember_019f48e4-90ce-76e4-b4ba-013f094099c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-90ce-7bec-b622-dc7bb30c3b1a" xlink:to="loc_us-gaap_HomeBuildingMember_019f48e4-90ce-76e4-b4ba-013f094099c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialServiceMember_019f48e4-90ce-75a5-aaf8-1954502d09be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f48e4-90ce-7bec-b622-dc7bb30c3b1a" xlink:to="loc_us-gaap_FinancialServiceMember_019f48e4-90ce-75a5-aaf8-1954502d09be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_019f48e4-90ce-72ce-957e-db28dd4027ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-90ce-7efa-92f2-1444b881c83c" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_019f48e4-90ce-72ce-957e-db28dd4027ee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019f48e4-90ce-7d21-930d-33067986adf8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_019f48e4-90ce-72ce-957e-db28dd4027ee" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019f48e4-90ce-7d21-930d-33067986adf8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_SupplementalDisclosuresOfCashFlowInformationAbstract_019f48e4-90ce-7c1f-864e-15741dc15ec8" xlink:href="kbh-20260831.xsd#kbh_SupplementalDisclosuresOfCashFlowInformationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f48e4-90ce-7efa-92f2-1444b881c83c" xlink:to="loc_kbh_SupplementalDisclosuresOfCashFlowInformationAbstract_019f48e4-90ce-7c1f-864e-15741dc15ec8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_InterestPaidNetOfCapitalizedAmount_019f48e4-90ce-7fde-a49a-3603e6db4496" xlink:href="kbh-20260831.xsd#kbh_InterestPaidNetOfCapitalizedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_SupplementalDisclosuresOfCashFlowInformationAbstract_019f48e4-90ce-7c1f-864e-15741dc15ec8" xlink:to="loc_kbh_InterestPaidNetOfCapitalizedAmount_019f48e4-90ce-7fde-a49a-3603e6db4496" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaid_019f48e4-90ce-7cbb-9ae2-206eab3d3bce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxesPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_kbh_SupplementalDisclosuresOfCashFlowInformationAbstract_019f48e4-90ce-7c1f-864e-15741dc15ec8" xlink:to="loc_us-gaap_IncomeTaxesPaid_019f48e4-90ce-7cbb-9ae2-206eab3d3bce" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_019f48e4-90ce-729c-9acc-56d3df3e47ac" 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_SegmentReportingInformationLineItems_019f48e4-90ce-7efa-92f2-1444b881c83c" xlink:to="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_019f48e4-90ce-729c-9acc-56d3df3e47ac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_IncreaseDecreaseInConsolidatedInventoriesNotOwned_019f48e4-90ce-7313-beda-4fe9f580a57c" xlink:href="kbh-20260831.xsd#kbh_IncreaseDecreaseInConsolidatedInventoriesNotOwned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_019f48e4-90ce-729c-9acc-56d3df3e47ac" xlink:to="loc_kbh_IncreaseDecreaseInConsolidatedInventoriesNotOwned_019f48e4-90ce-7313-beda-4fe9f580a57c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_NonCashIncreaseDecreaseInInvestmentInUnconsolidatedJointVentureNet_019f48e4-90ce-7324-9b14-6818945cda2c" xlink:href="kbh-20260831.xsd#kbh_NonCashIncreaseDecreaseInInvestmentInUnconsolidatedJointVentureNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_019f48e4-90ce-729c-9acc-56d3df3e47ac" xlink:to="loc_kbh_NonCashIncreaseDecreaseInInvestmentInUnconsolidatedJointVentureNet_019f48e4-90ce-7324-9b14-6818945cda2c" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.kbhome.com/role/RelocationofCorporateHeadquartersDetails" xlink:type="simple" xlink:href="kbh-20260831.xsd#RelocationofCorporateHeadquartersDetails"/>
  <link:definitionLink xlink:role="http://www.kbhome.com/role/RelocationofCorporateHeadquartersDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019f48e4-90ce-704b-b785-006d0cb134d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f48e4-90ce-7735-9262-abb6395de41c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f48e4-90ce-704b-b785-006d0cb134d7" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f48e4-90ce-7735-9262-abb6395de41c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_019f48e4-90ce-77b8-8c82-30cbb0d1feac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f48e4-90ce-7735-9262-abb6395de41c" xlink:to="loc_us-gaap_RestructuringPlanAxis_019f48e4-90ce-77b8-8c82-30cbb0d1feac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f48e4-90ce-77b8-8c82-30cbb0d1feac_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f48e4-90ce-77b8-8c82-30cbb0d1feac" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f48e4-90ce-77b8-8c82-30cbb0d1feac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f48e4-90ce-7873-aea1-a3bf04a27e4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f48e4-90ce-77b8-8c82-30cbb0d1feac" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f48e4-90ce-7873-aea1-a3bf04a27e4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_kbh_RelocationOfCorporateHeadquartersMember_019f48e4-90ce-7189-b0c9-f79a2b5d3463" xlink:href="kbh-20260831.xsd#kbh_RelocationOfCorporateHeadquartersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f48e4-90ce-7873-aea1-a3bf04a27e4f" xlink:to="loc_kbh_RelocationOfCorporateHeadquartersMember_019f48e4-90ce-7189-b0c9-f79a2b5d3463" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019f48e4-90ce-7560-a62b-5ad722baa341" 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_ScheduleOfRestructuringAndRelatedCostsTable_019f48e4-90ce-7735-9262-abb6395de41c" xlink:to="loc_srt_RangeAxis_019f48e4-90ce-7560-a62b-5ad722baa341" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f48e4-90ce-7560-a62b-5ad722baa341_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_019f48e4-90ce-7560-a62b-5ad722baa341" xlink:to="loc_srt_RangeMember_019f48e4-90ce-7560-a62b-5ad722baa341_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f48e4-90ce-7afe-8f06-d894ae777afc" 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_019f48e4-90ce-7560-a62b-5ad722baa341" xlink:to="loc_srt_RangeMember_019f48e4-90ce-7afe-8f06-d894ae777afc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019f48e4-90ce-75ed-9784-49d1dff0a0a4" 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_019f48e4-90ce-7afe-8f06-d894ae777afc" xlink:to="loc_srt_MinimumMember_019f48e4-90ce-75ed-9784-49d1dff0a0a4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019f48e4-90ce-7767-aabf-fd8c9e27d4d3" 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_019f48e4-90ce-7afe-8f06-d894ae777afc" xlink:to="loc_srt_MaximumMember_019f48e4-90ce-7767-aabf-fd8c9e27d4d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_019f48e4-90ce-7d66-b544-6010521a4f99" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f48e4-90ce-704b-b785-006d0cb134d7" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_019f48e4-90ce-7d66-b544-6010521a4f99" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019f48e4-90ce-7100-933a-f6aecd035c7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f48e4-90ce-704b-b785-006d0cb134d7" xlink:to="loc_us-gaap_RestructuringCharges_019f48e4-90ce-7100-933a-f6aecd035c7c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_019f48e4-90ce-77b3-9739-d7afc9f518a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostsAndAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f48e4-90ce-704b-b785-006d0cb134d7" xlink:to="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_019f48e4-90ce-77b3-9739-d7afc9f518a3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveCurrent_019f48e4-90ce-76f4-9261-80ed629134bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserveCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f48e4-90ce-704b-b785-006d0cb134d7" xlink:to="loc_us-gaap_RestructuringReserveCurrent_019f48e4-90ce-76f4-9261-80ed629134bd" xlink:type="arc" order="3"/>
  </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_us-gaap_LiabilitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent" 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_LiabilitiesAbstract" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent" xlink:type="arc" order="31"/>
  </link:definitionLink>
</link:linkbase>
