<?xml version="1.0" encoding="utf-8"?>
<!--XBRL document created with Toppan Merrill Bridge  11.5.1.0 -->
<!--Based on XBRL 2.1-->
<!--Created on: 11/4/2026 2:48:50 PM-->
<!--Modified on: 11/4/2026 2:48:50 PM-->
<xsd:schema targetNamespace="http://www.inreit.com/20260930" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sret="http://www.inreit.com/20260930" xmlns:deprecated="http://www.xbrl.org/2009/role/deprecated" xmlns:us-roles="http://fasb.org/us-roles/2026" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:utr="http://www.xbrl.org/2009/utr" xmlns:us-gaap="http://fasb.org/us-gaap/2026" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:dei="http://xbrl.sec.gov/dei/2026" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:attributeFormDefault="unqualified" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:srt="http://fasb.org/srt/2026" xmlns:dtr="http://www.xbrl.org/2009/dtr" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:ecd="http://xbrl.sec.gov/ecd/2026" xmlns:ecd-sub="http://xbrl.sec.gov/ecd-sub/2026">
  <xsd:annotation>
    <xsd:appinfo>
      <link:roleType roleURI="http://www.inreit.com/role/StatementConsolidatedBalanceSheets" id="StatementConsolidatedBalanceSheets">
        <link:definition>995200100 - Statement - CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/StatementConsolidatedStatementsOfOperationsAndOtherComprehensiveIncome" id="StatementConsolidatedStatementsOfOperationsAndOtherComprehensiveIncome">
        <link:definition>995200200 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND OTHER COMPREHENSIVE INCOME</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/StatementConsolidatedStatementsOfOperationAndOtherComprehensiveIncomeUnauditedCalc2" id="StatementConsolidatedStatementsOfOperationAndOtherComprehensiveIncomeUnauditedCalc2">
        <link:definition>00202 - Statement - CONSOLIDATED STATEMENTS OF OPERATION AND OTHER COMPREHENSIVE INCOME (UNAUDITED) - Calc 2</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/StatementConsolidatedStatementsOfCashFlows" id="StatementConsolidatedStatementsOfCashFlows">
        <link:definition>995200400 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/StatementConsolidatedStatementsOfCashFlowsSupplementalDisclosures" id="StatementConsolidatedStatementsOfCashFlowsSupplementalDisclosures">
        <link:definition>995200405 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS - Supplemental Disclosures</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureSegmentReportingSummaryOfSegmentRevenuesAndNetOperatingIncomeDetails" id="DisclosureSegmentReportingSummaryOfSegmentRevenuesAndNetOperatingIncomeDetails">
        <link:definition>99940302 - Disclosure - SEGMENT REPORTING - Summary of Segment Revenues and Net Operating Income (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureRestrictedDepositsAndFundedReservesSummaryOfRestrictedDepositsAndFundedReservesDetails" id="DisclosureRestrictedDepositsAndFundedReservesSummaryOfRestrictedDepositsAndFundedReservesDetails">
        <link:definition>99940401 - Disclosure - RESTRICTED DEPOSITS AND FUNDED RESERVES - Summary of Restricted Deposits and Funded Reserves (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureInvestmentInUnconsolidatedAffiliatesTotalInvestmentsDetails" id="DisclosureInvestmentInUnconsolidatedAffiliatesTotalInvestmentsDetails">
        <link:definition>99940601 - Disclosure - INVESTMENT IN UNCONSOLIDATED AFFILIATES - Total investments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureInvestmentInUnconsolidatedAffiliatesSummaryOfFinancialPositionDetails" id="DisclosureInvestmentInUnconsolidatedAffiliatesSummaryOfFinancialPositionDetails">
        <link:definition>99940603 - Disclosure - INVESTMENT IN UNCONSOLIDATED AFFILIATES - Summary of financial position (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureInvestmentInUnconsolidatedAffiliatesSummaryOfResultsOfOperationsDetails" id="DisclosureInvestmentInUnconsolidatedAffiliatesSummaryOfResultsOfOperationsDetails">
        <link:definition>99940604 - Disclosure - INVESTMENT IN UNCONSOLIDATED AFFILIATES - Summary of results of operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLeaseIntangiblesScheduleOfIntangibleAssetsAndLiabilitiesAndAccumulatedAmortizationDetails" id="DisclosureLeaseIntangiblesScheduleOfIntangibleAssetsAndLiabilitiesAndAccumulatedAmortizationDetails">
        <link:definition>99940701 - Disclosure - LEASE INTANGIBLES - Schedule of Intangible Assets and Liabilities and Accumulated Amortization (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLeaseIntangiblesScheduleOfEstimatedAggregateAmortizationExpenseDetails" id="DisclosureLeaseIntangiblesScheduleOfEstimatedAggregateAmortizationExpenseDetails">
        <link:definition>99940702 - Disclosure - LEASE INTANGIBLES - Schedule of Estimated Aggregate Amortization Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureNotesPayableSummaryDetails" id="DisclosureNotesPayableSummaryDetails">
        <link:definition>99940901 - Disclosure - NOTES PAYABLE - Summary (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureNotesPayableScheduledMaturitiesOfMortgageNotesPayableDetails" id="DisclosureNotesPayableScheduledMaturitiesOfMortgageNotesPayableDetails">
        <link:definition>99940902 - Disclosure - NOTES PAYABLE - Scheduled Maturities of Mortgage Notes Payable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLeasesLeaseIncomeDetails" id="DisclosureLeasesLeaseIncomeDetails">
        <link:definition>99941202 - Disclosure - LEASES - Lease Income (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLeasesFutureMinimumRentalIncomeDetails" id="DisclosureLeasesFutureMinimumRentalIncomeDetails">
        <link:definition>99941203 - Disclosure - LEASES - Future minimum rental income (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureAcquisitionsOfConsolidatedPropertiesSummaryOfAcquisitionsDetails" id="DisclosureAcquisitionsOfConsolidatedPropertiesSummaryOfAcquisitionsDetails">
        <link:definition>99941602 - Disclosure - ACQUISITIONS OF CONSOLIDATED PROPERTIES - Summary of acquisitions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DocumentDocumentAndEntityInformation" id="DocumentDocumentAndEntityInformation">
        <link:definition>995200090 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/StatementConsolidatedStatementsOfShareholdersEquity" id="StatementConsolidatedStatementsOfShareholdersEquity">
        <link:definition>995200300 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureOrganization" id="DisclosureOrganization">
        <link:definition>995210101 - Disclosure - ORGANIZATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosurePrincipalActivityAndSignificantAccountingPolicies" id="DisclosurePrincipalActivityAndSignificantAccountingPolicies">
        <link:definition>995210201 - Disclosure - PRINCIPAL ACTIVITY AND SIGNIFICANT ACCOUNTING POLICIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureSegmentReporting" id="DisclosureSegmentReporting">
        <link:definition>995210301 - Disclosure - SEGMENT REPORTING</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureRestrictedDepositsAndFundedReserves" id="DisclosureRestrictedDepositsAndFundedReserves">
        <link:definition>995210401 - Disclosure - RESTRICTED DEPOSITS AND FUNDED RESERVES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLeaseIntangibles" id="DisclosureLeaseIntangibles">
        <link:definition>995210701 - Disclosure - LEASE INTANGIBLES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLinesOfCredit" id="DisclosureLinesOfCredit">
        <link:definition>995210801 - Disclosure - LINES OF CREDIT</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureNotesPayable" id="DisclosureNotesPayable">
        <link:definition>995210901 - Disclosure - NOTES PAYABLE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDerivativesAndHedgingActivities" id="DisclosureDerivativesAndHedgingActivities">
        <link:definition>995211001 - Disclosure - DERIVATIVES AND HEDGING ACTIVITIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureFairValueMeasurement" id="DisclosureFairValueMeasurement">
        <link:definition>995211101 - Disclosure - FAIR VALUE MEASUREMENT</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureRelatedPartyTransactions" id="DisclosureRelatedPartyTransactions">
        <link:definition>995211301 - Disclosure - RELATED PARTY TRANSACTIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDispositions" id="DisclosureDispositions">
        <link:definition>995211501 - Disclosure - DISPOSITIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureAcquisitionsOfConsolidatedProperties" id="DisclosureAcquisitionsOfConsolidatedProperties">
        <link:definition>995211601 - Disclosure - ACQUISITIONS OF CONSOLIDATED PROPERTIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureSubsequentEvents" id="DisclosureSubsequentEvents">
        <link:definition>995211701 - Disclosure - SUBSEQUENT EVENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosurePrincipalActivityAndSignificantAccountingPoliciesPolicies" id="DisclosurePrincipalActivityAndSignificantAccountingPoliciesPolicies">
        <link:definition>99920202 - Disclosure - PRINCIPAL ACTIVITY AND SIGNIFICANT ACCOUNTING POLICIES (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosurePrincipalActivityAndSignificantAccountingPoliciesTables" id="DisclosurePrincipalActivityAndSignificantAccountingPoliciesTables">
        <link:definition>99930203 - Disclosure - PRINCIPAL ACTIVITY AND SIGNIFICANT ACCOUNTING POLICIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureSegmentReportingTables" id="DisclosureSegmentReportingTables">
        <link:definition>99930303 - Disclosure - SEGMENT REPORTING (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureRestrictedDepositsAndFundedReservesTables" id="DisclosureRestrictedDepositsAndFundedReservesTables">
        <link:definition>99930403 - Disclosure - RESTRICTED DEPOSITS AND FUNDED RESERVES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLeaseIntangiblesTables" id="DisclosureLeaseIntangiblesTables">
        <link:definition>99930703 - Disclosure - LEASE INTANGIBLES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureNotesPayableTables" id="DisclosureNotesPayableTables">
        <link:definition>99930903 - Disclosure - NOTES PAYABLE (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureFairValueMeasurementTables" id="DisclosureFairValueMeasurementTables">
        <link:definition>99931103 - Disclosure - FAIR VALUE MEASUREMENT (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureRelatedPartyTransactionsTables" id="DisclosureRelatedPartyTransactionsTables">
        <link:definition>99931303 - Disclosure - RELATED PARTY TRANSACTIONS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureAcquisitionsOfConsolidatedPropertiesTables" id="DisclosureAcquisitionsOfConsolidatedPropertiesTables">
        <link:definition>99931603 - Disclosure - ACQUISITIONS OF CONSOLIDATED PROPERTIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureOrganizationDetails" id="DisclosureOrganizationDetails">
        <link:definition>99940101 - Disclosure - ORGANIZATION (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosurePrincipalActivityAndSignificantAccountingPoliciesRealEstateInvestmentsDetails" id="DisclosurePrincipalActivityAndSignificantAccountingPoliciesRealEstateInvestmentsDetails">
        <link:definition>99940202 - Disclosure - PRINCIPAL ACTIVITY AND SIGNIFICANT ACCOUNTING POLICIES - Real Estate Investments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosurePrincipalActivityAndSignificantAccountingPoliciesEquityDetails" id="DisclosurePrincipalActivityAndSignificantAccountingPoliciesEquityDetails">
        <link:definition>99940203 - Disclosure - PRINCIPAL ACTIVITY AND SIGNIFICANT ACCOUNTING POLICIES - Equity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosurePrincipalActivityAndSignificantAccountingPoliciesFederalIncomeTaxesDetails" id="DisclosurePrincipalActivityAndSignificantAccountingPoliciesFederalIncomeTaxesDetails">
        <link:definition>99940204 - Disclosure - PRINCIPAL ACTIVITY AND SIGNIFICANT ACCOUNTING POLICIES - Federal Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosurePrincipalActivityAndSignificantAccountingPoliciesReclassificationsDetails" id="DisclosurePrincipalActivityAndSignificantAccountingPoliciesReclassificationsDetails">
        <link:definition>99940205 - Disclosure - PRINCIPAL ACTIVITY AND SIGNIFICANT ACCOUNTING POLICIES - Reclassifications (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosurePrincipalActivityAndSignificantAccountingPoliciesEarningsPerCommonShareDetails" id="DisclosurePrincipalActivityAndSignificantAccountingPoliciesEarningsPerCommonShareDetails">
        <link:definition>99940206 - Disclosure - PRINCIPAL ACTIVITY AND SIGNIFICANT ACCOUNTING POLICIES - Earnings per Common Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureSegmentReportingAdditionalInformationDetails" id="DisclosureSegmentReportingAdditionalInformationDetails">
        <link:definition>99940301 - Disclosure - SEGMENT REPORTING - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureSegmentReportingSummaryOfSegmentAssetsAndAccumulatedDepreciationDetails" id="DisclosureSegmentReportingSummaryOfSegmentAssetsAndAccumulatedDepreciationDetails">
        <link:definition>99940303 - Disclosure - SEGMENT REPORTING - Summary of Segment Assets and Accumulated Depreciation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureConsolidatedVariableInterestEntitiesDetails" id="DisclosureConsolidatedVariableInterestEntitiesDetails">
        <link:definition>99940501 - Disclosure - CONSOLIDATED VARIABLE INTEREST ENTITIES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureConsolidatedVariableInterestEntitiesFinancialPositionOfConsolidatedVariableInterestEntitiesDetails" id="DisclosureConsolidatedVariableInterestEntitiesFinancialPositionOfConsolidatedVariableInterestEntitiesDetails">
        <link:definition>99940502 - Disclosure - CONSOLIDATED VARIABLE INTEREST ENTITIES - Financial position of consolidated variable interest entities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureConsolidatedVariableInterestEntitiesSummaryOfResultsOfOperationsOfConsolidatedVariableInterestEntitiesDetails" id="DisclosureConsolidatedVariableInterestEntitiesSummaryOfResultsOfOperationsOfConsolidatedVariableInterestEntitiesDetails">
        <link:definition>99940503 - Disclosure - CONSOLIDATED VARIABLE INTEREST ENTITIES - Summary of results of operations of consolidated variable interest entities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureInvestmentInUnconsolidatedAffiliatesAdditionalInformationDetails" id="DisclosureInvestmentInUnconsolidatedAffiliatesAdditionalInformationDetails">
        <link:definition>99940602 - Disclosure - INVESTMENT IN UNCONSOLIDATED AFFILIATES - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLinesOfCreditDetails" id="DisclosureLinesOfCreditDetails">
        <link:definition>99940801 - Disclosure - LINES OF CREDIT (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDerivativesAndHedgingActivitiesOtherDetails" id="DisclosureDerivativesAndHedgingActivitiesOtherDetails">
        <link:definition>99941001 - Disclosure - DERIVATIVES AND HEDGING ACTIVITIES - Other (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDerivativesAndHedgingActivitiesSummaryDetails" id="DisclosureDerivativesAndHedgingActivitiesSummaryDetails">
        <link:definition>99941002 - Disclosure - DERIVATIVES AND HEDGING ACTIVITIES - Summary (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDerivativesAndHedgingActivitiesFairValueDetails" id="DisclosureDerivativesAndHedgingActivitiesFairValueDetails">
        <link:definition>99941003 - Disclosure - DERIVATIVES AND HEDGING ACTIVITIES - Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDerivativesAndHedgingActivitiesFairValueDefaultDetails" id="DisclosureDerivativesAndHedgingActivitiesFairValueDefaultDetails">
        <link:definition>41003 - Disclosure - DERIVATIVES AND HEDGING ACTIVITIES - Fair Value Default (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDerivativesAndHedgingActivitiesGainLossDetails" id="DisclosureDerivativesAndHedgingActivitiesGainLossDetails">
        <link:definition>99941004 - Disclosure - DERIVATIVES AND HEDGING ACTIVITIES - Gain-Loss (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureFairValueMeasurementCarryingValueAndEstimatedFairValueOfCompanySFinancialInstrumentsDetails" id="DisclosureFairValueMeasurementCarryingValueAndEstimatedFairValueOfCompanySFinancialInstrumentsDetails">
        <link:definition>99941101 - Disclosure - FAIR VALUE MEASUREMENT - Carrying Value and Estimated Fair Value of Company's Financial Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureFairValueMeasurementScheduleOfFairValueOfAssetsOnRecurringBasisDetails" id="DisclosureFairValueMeasurementScheduleOfFairValueOfAssetsOnRecurringBasisDetails">
        <link:definition>99941102 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Fair Value of Assets on Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureFairValueMeasurementFairValueOfCompanySFinancialAssetsAndLiabilitiesDetails" id="DisclosureFairValueMeasurementFairValueOfCompanySFinancialAssetsAndLiabilitiesDetails">
        <link:definition>99941103 - Disclosure - FAIR VALUE MEASUREMENT - Fair Value of Company's Financial Assets and Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureFairValueMeasurementAdditionalInformationDetails" id="DisclosureFairValueMeasurementAdditionalInformationDetails">
        <link:definition>99941104 - Disclosure - FAIR VALUE MEASUREMENT - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLeasesOtherDetails" id="DisclosureLeasesOtherDetails">
        <link:definition>99941201 - Disclosure - LEASES - Other (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureRelatedPartyTransactionsPropertyManagementAndBoardOfTrusteeFeesDetails" id="DisclosureRelatedPartyTransactionsPropertyManagementAndBoardOfTrusteeFeesDetails">
        <link:definition>99941301 - Disclosure - RELATED PARTY TRANSACTIONS - Property Management and Board of Trustee Fees (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureRelatedPartyTransactionsAdvisoryAgreementAndOtherDetails" id="DisclosureRelatedPartyTransactionsAdvisoryAgreementAndOtherDetails">
        <link:definition>99941302 - Disclosure - RELATED PARTY TRANSACTIONS - Advisory Agreement and Other (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDispositionsSummaryDetails" id="DisclosureDispositionsSummaryDetails">
        <link:definition>99941501 - Disclosure - DISPOSITIONS - Summary (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureAcquisitionsOfConsolidatedPropertiesSummaryDetails" id="DisclosureAcquisitionsOfConsolidatedPropertiesSummaryDetails">
        <link:definition>99941601 - Disclosure - ACQUISITIONS OF CONSOLIDATED PROPERTIES - Summary (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureSubsequentEventsDetails" id="DisclosureSubsequentEventsDetails">
        <link:definition>99941701 - Disclosure - SUBSEQUENT EVENTS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/StatementConsolidatedStatementsOfShareholdersEquityParenthetical" id="StatementConsolidatedStatementsOfShareholdersEquityParenthetical">
        <link:definition>995200305 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureConsolidatedVariableInterestEntities" id="DisclosureConsolidatedVariableInterestEntities">
        <link:definition>995210501 - Disclosure - CONSOLIDATED VARIABLE INTEREST ENTITIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureInvestmentInUnconsolidatedAffiliates" id="DisclosureInvestmentInUnconsolidatedAffiliates">
        <link:definition>995210601 - Disclosure - INVESTMENT IN UNCONSOLIDATED AFFILIATES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLeases" id="DisclosureLeases">
        <link:definition>995211201 - Disclosure - LEASES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureCommitmentsAndContingencies" id="DisclosureCommitmentsAndContingencies">
        <link:definition>995211401 - Disclosure - COMMITMENTS AND CONTINGENCIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureConsolidatedVariableInterestEntitiesTables" id="DisclosureConsolidatedVariableInterestEntitiesTables">
        <link:definition>99930503 - Disclosure - CONSOLIDATED VARIABLE INTEREST ENTITIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureInvestmentInUnconsolidatedAffiliatesTables" id="DisclosureInvestmentInUnconsolidatedAffiliatesTables">
        <link:definition>99930603 - Disclosure - INVESTMENT IN UNCONSOLIDATED AFFILIATES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDerivativesAndHedgingActivitiesTables" id="DisclosureDerivativesAndHedgingActivitiesTables">
        <link:definition>99931003 - Disclosure - DERIVATIVES AND HEDGING ACTIVITIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureLeasesTables" id="DisclosureLeasesTables">
        <link:definition>99931203 - Disclosure - LEASES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDispositionsTables" id="DisclosureDispositionsTables">
        <link:definition>99931503 - Disclosure - DISPOSITIONS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosurePrincipalActivityAndSignificantAccountingPoliciesPrinciplesOfConsolidationDetails" id="DisclosurePrincipalActivityAndSignificantAccountingPoliciesPrinciplesOfConsolidationDetails">
        <link:definition>99940201 - Disclosure - PRINCIPAL ACTIVITY AND SIGNIFICANT ACCOUNTING POLICIES - Principles of Consolidation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureDerivativesAndHedgingActivitiesCreditRiskRelatedContingentFeaturesDetails" id="DisclosureDerivativesAndHedgingActivitiesCreditRiskRelatedContingentFeaturesDetails">
        <link:definition>99941005 - Disclosure - DERIVATIVES AND HEDGING ACTIVITIES - Credit-Risk Related Contingent Features (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:type="simple" xlink:href="sret-20260930_pre.xml" xlink:title="Presentation Links, all" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="sret-20260930_cal.xml" xlink:title="Calculation Links, all" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="sret-20260930_def.xml" xlink:title="Definition Links, all" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="sret-20260930_lab.xml" xlink:title="Label Links, all" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://www.inreit.com/role/DisclosureStandardAndCustomAxisDomainDefaults" id="DisclosureStandardAndCustomAxisDomainDefaults">
        <link:definition>99900 - Disclosure - Standard And Custom Axis Domain Defaults</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:import namespace="https://xbrl.org/2023/calculation-1.1" schemaLocation="https://www.xbrl.org/2023/calculation-1.1.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/ecd/2026" schemaLocation="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-roles-2026.xsd" />
  <xsd:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd" />
  <xsd:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/ecd-sub/2026" schemaLocation="https://xbrl.sec.gov/ecd/2026/ecd-sub-2026.xsd" />
  <xsd:element name="GateCityBankAgreementOneMember" id="sret_GateCityBankAgreementOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GateCityBankAgreementTwoMember" id="sret_GateCityBankAgreementTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="Srenor1LlcAndSrenor2LlcMember" id="sret_Srenor1LlcAndSrenor2LlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SeRosemountLlcMember" id="sret_SeRosemountLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AcquisitionOfAssetsInExchangeForIssuanceOfNoncontrollingInterestShares" id="sret_AcquisitionOfAssetsInExchangeForIssuanceOfNoncontrollingInterestShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="AdvisoryManagementFeesOutstanding" id="sret_AdvisoryManagementFeesOutstanding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="BeneficialInterestMember" id="sret_BeneficialInterestMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BremerBankAgreementOneMember" id="sret_BremerBankAgreementOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BremerBankAgreementTwoMember" id="sret_BremerBankAgreementTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommercialMember" id="sret_CommercialMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DistributionsDeclaredAndNotPaid" id="sret_DistributionsDeclaredAndNotPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="DistributionsReinvested" id="sret_DistributionsReinvested" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ExpensesFromRentalOperationsAbstract" id="sret_ExpensesFromRentalOperationsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FinancingFeesForLoanFinancingAndRefinancingActivities" id="sret_FinancingFeesForLoanFinancingAndRefinancingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="GainLossOnInvoluntaryConversions" id="sret_GainLossOnInvoluntaryConversions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="GoldmarkPropertyManagementMember" id="sret_GoldmarkPropertyManagementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GoldmarkSchlossmanCommercialRealEstateServicesMember" id="sret_GoldmarkSchlossmanCommercialRealEstateServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncreaseInLandImprovementsDueToIncreaseInSpecialAssessmentsPayable" id="sret_IncreaseInLandImprovementsDueToIncreaseInSpecialAssessmentsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="MortgageNotesPayableMember" id="sret_MortgageNotesPayableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NoncashOrPartNoncashAcquisitionDebtLiabilitiesAndPropertiesPurchasedAssumed1" id="sret_NoncashOrPartNoncashAcquisitionDebtLiabilitiesAndPropertiesPurchasedAssumed1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfDispositions" id="sret_NumberOfDispositions" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfPaidEmployees" id="sret_NumberOfPaidEmployees" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OperatingPartnershipMember" id="sret_OperatingPartnershipMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OwnershipInOperatingPartnership" id="sret_OwnershipInOperatingPartnership" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="PercentageOfInterest" id="sret_PercentageOfInterest" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="PrincipalPaymentsOnSpecialAssessmentsPayable" id="sret_PrincipalPaymentsOnSpecialAssessmentsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ProceedsFromIssuanceOfSharesUnderOptionalPurchasePlan" id="sret_ProceedsFromIssuanceOfSharesUnderOptionalPurchasePlan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="RealEstateCommissions" id="sret_RealEstateCommissions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="RealEstateCommissionsOutstanding" id="sret_RealEstateCommissionsOutstanding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ResidentialMember" id="sret_ResidentialMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RetainableTaxableIncome" id="sret_RetainableTaxableIncome" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ScheduleOfCashFlowInformationAbstract" id="sret_ScheduleOfCashFlowInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SegmentReportingInformationExpensesFromRentalOperations" id="sret_SegmentReportingInformationExpensesFromRentalOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="SegmentReportingInformationNetOperatingIncomeAndLoss" id="sret_SegmentReportingInformationNetOperatingIncomeAndLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ShareRedemptionPlansMember" id="sret_ShareRedemptionPlansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareRepurchaseProgramRepurchasePricePerShare" id="sret_ShareRepurchaseProgramRepurchasePricePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodSharesStockPurchasePlan" id="sret_StockIssuedDuringPeriodSharesStockPurchasePlan" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodValueStockPurchasePlan" id="sret_StockIssuedDuringPeriodValueStockPurchasePlan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SubsidiaryDistributionsDeclaredAndNotPaid" id="sret_SubsidiaryDistributionsDeclaredAndNotPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SummaryOfRealEstateInvestmentsEstimatedUsefulLifeTableTextBlock" id="sret_SummaryOfRealEstateInvestmentsEstimatedUsefulLifeTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TaxableIncomeToBeDistributed" id="sret_TaxableIncomeToBeDistributed" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="UnitsInPropertyAcquired" id="sret_UnitsInPropertyAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DevelopmentFeesOutstanding" id="sret_DevelopmentFeesOutstanding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="TenantSecurityDeposits" id="sret_TenantSecurityDeposits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="RealEstateTaxAndInsuranceEscrowsBalanceAmount" id="sret_RealEstateTaxAndInsuranceEscrowsBalanceAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ScheduleOfRealEstatePropertyAcquisitionTable" id="sret_ScheduleOfRealEstatePropertyAcquisitionTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RealEstatePropertyAcquisitionsAxis" id="sret_RealEstatePropertyAcquisitionsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RealEstatePropertyAcquisitionsDomain" id="sret_RealEstatePropertyAcquisitionsDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RestrictedDepositsAndFundedReservesTableTextBlock" id="sret_RestrictedDepositsAndFundedReservesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfLeaseIntangiblesTableTextBlock" id="sret_ScheduleOfLeaseIntangiblesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfFutureAmortizationOfLeaseIntangiblesTableTextBlock" id="sret_ScheduleOfFutureAmortizationOfLeaseIntangiblesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AdvisoryAgreementMember" id="sret_AdvisoryAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DevelopmentFeeRangeAxis" id="sret_DevelopmentFeeRangeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DevelopmentFeeRangeDomain" id="sret_DevelopmentFeeRangeDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SterlingManagementLlcMember" id="sret_SterlingManagementLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BioLifeMarquetteMember" id="sret_BioLifeMarquetteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EntityAffiliatedWithMessrsReganAndWielandMember" id="sret_EntityAffiliatedWithMessrsReganAndWielandMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FixedRateMortgageNotesPayableMember" id="sret_FixedRateMortgageNotesPayableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtSwappedFromVariableRateToFixedRate" id="sret_DebtSwappedFromVariableRateToFixedRate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="MinorityInterestInPartiallyOwnedProperties" id="sret_MinorityInterestInPartiallyOwnedProperties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="NoncontrollingInterestInOperatingPartnershipMember" id="sret_NoncontrollingInterestInOperatingPartnershipMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NoncontrollingInterestInPartiallyOwnedPropertiesMember" id="sret_NoncontrollingInterestInPartiallyOwnedPropertiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OperatingPartnershipUnitsIssuedInConnectionWithAcquisitionUnits" id="sret_OperatingPartnershipUnitsIssuedInConnectionWithAcquisitionUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OperatingPartnershipUnitsIssuedInConnectionWithAcquisitionValue" id="sret_OperatingPartnershipUnitsIssuedInConnectionWithAcquisitionValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="StockholdersEquityAttributableToParentBeneficialInterest" id="sret_StockholdersEquityAttributableToParentBeneficialInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="RealEstateConstructionInProgressCostOfCapitalizedInterestAndRealEstateTaxes" id="sret_RealEstateConstructionInProgressCostOfCapitalizedInterestAndRealEstateTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NoncontrollingInterestInNetIncomeLossOperatingPartnerships" id="sret_NoncontrollingInterestInNetIncomeLossOperatingPartnerships" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NoncontrollingInterestInNetIncomeLossPartiallyOwnedProperties" id="sret_NoncontrollingInterestInNetIncomeLossPartiallyOwnedProperties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="GrandForksMarketplaceRetailCenterMember" id="sret_GrandForksMarketplaceRetailCenterMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AdvisoryManagementFees" id="sret_AdvisoryManagementFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionRepairAndMaintenanceRelatedPayrollExpenses" id="sret_RelatedPartyTransactionRepairAndMaintenanceRelatedPayrollExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NonoperatingIncomeExpenseIncludingIncomeLossFromEquityMethodInvestments" id="sret_NonoperatingIncomeExpenseIncludingIncomeLossFromEquityMethodInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="GainLossOnSaleOfRealEstateAndNonRealEstateInvestments" id="sret_GainLossOnSaleOfRealEstateAndNonRealEstateInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="BremerBankMember" id="sret_BremerBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PropertyManagementFeesExpense" id="sret_PropertyManagementFeesExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="UtilitiesExpense" id="sret_UtilitiesExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfAcquisitionDateFairValuesRealEstateAcquisitions" id="sret_ScheduleOfAcquisitionDateFairValuesRealEstateAcquisitions" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OperatingExpensesExcludingRealEstateTaxes" id="sret_OperatingExpensesExcludingRealEstateTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="OperatingLeaseIncomeOther" id="sret_OperatingLeaseIncomeOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfRevenueFromShortTermLeases" id="sret_PercentageOfRevenueFromShortTermLeases" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="PercentageOfRevenueFromLongTermLeases" id="sret_PercentageOfRevenueFromLongTermLeases" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="SESavageMember" id="sret_SESavageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ProjectManagementFee" id="sret_ProjectManagementFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ProjectManagementFeePayable" id="sret_ProjectManagementFeePayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="NumberOfPropertiesAcquired" id="sret_NumberOfPropertiesAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeMapleGroveMember" id="sret_SeMapleGroveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestRateSwapMaturingInNovember2029Member" id="sret_InterestRateSwapMaturingInNovember2029Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestRateSwapMaturingInNovember2029InterestRateSwapTwoMember" id="sret_InterestRateSwapMaturingInNovember2029InterestRateSwapTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringRemainingPeriodOfFiscalYearNet" id="sret_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringRemainingPeriodOfFiscalYearNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="InterestRateSwapMaturingInJanuary2030Member" id="sret_InterestRateSwapMaturingInJanuary2030Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestRateSwapMaturingInJune2030Member" id="sret_InterestRateSwapMaturingInJune2030Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestRateSwapMaturingInJune2030InterestRateSwapTwoMember" id="sret_InterestRateSwapMaturingInJune2030InterestRateSwapTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestRateSwapMaturingInJune2030InterestRateSwapThreeMember" id="sret_InterestRateSwapMaturingInJune2030InterestRateSwapThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestRateSwapMaturingInJune2030InterestRateSwapFourMember" id="sret_InterestRateSwapMaturingInJune2030InterestRateSwapFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" id="sret_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="BelowMarketLeaseAmortizationIncomeAfterYearFour" id="sret_BelowMarketLeaseAmortizationIncomeAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="InterestRateSwapMaturingInJune2030InterestRateSwapFiveMember" id="sret_InterestRateSwapMaturingInJune2030InterestRateSwapFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherRestrictedEscrows" id="sret_OtherRestrictedEscrows" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ScheduleOfRealEstatePropertyAcquisitionLineItems" id="sret_ScheduleOfRealEstatePropertyAcquisitionLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeRogersMember" id="sret_SeRogersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestRateSwapMaturingInDecember2027Member" id="sret_InterestRateSwapMaturingInDecember2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfFeesIncurredAndPayableToRelatedPartyTableTextBlock" id="sret_ScheduleOfFeesIncurredAndPayableToRelatedPartyTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BellBankMember" id="sret_BellBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BannerBuildingMember" id="sret_BannerBuildingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfFinancialInformationOfEquityMethodInvestmentsTableTextBlock" id="sret_ScheduleOfFinancialInformationOfEquityMethodInvestmentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessOperationsCostAndCapitalExpenditureForConstructionInProgress" id="sret_BusinessOperationsCostAndCapitalExpenditureForConstructionInProgress" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="LoanPayableRelatedParty" id="sret_LoanPayableRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="InsurancePremiumPaidRelatedParty" id="sret_InsurancePremiumPaidRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="MezzanineFinancingMember" id="sret_MezzanineFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestRateSwapMaturingInJuly2031Member" id="sret_InterestRateSwapMaturingInJuly2031Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StOakCliffMember" id="sret_StOakCliffMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeBrooklynParkLLCMember" id="sret_SeBrooklynParkLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DerivativeNetAssetPositionAggregateFairValue" id="sret_DerivativeNetAssetPositionAggregateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="OtherAssetsNetAmount" id="sret_OtherAssetsNetAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="InterestRateSwapAugust2029Member" id="sret_InterestRateSwapAugust2029Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AssetAcquisitionAssumedAssets" id="sret_AssetAcquisitionAssumedAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="NotesReceivableMeasurementInput" id="sret_NotesReceivableMeasurementInput" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="AggregateAssetAcquisitionsMember" id="sret_AggregateAssetAcquisitionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InvestmentsInAndAdvanceToAffiliatesSubsidiariesAssociatesAndJointVenturesNet" id="sret_InvestmentsInAndAdvanceToAffiliatesSubsidiariesAssociatesAndJointVenturesNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="MortgageNotesPayableNet" id="sret_MortgageNotesPayableNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="NonoperatingIncomeExpenseIncludingIncomeLossFromEquityMethodInvestmentsAndImpairment" id="sret_NonoperatingIncomeExpenseIncludingIncomeLossFromEquityMethodInvestmentsAndImpairment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="PaymentsToAcquireNotesReceivableNet" id="sret_PaymentsToAcquireNotesReceivableNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="RealEstateDispositionCosts" id="sret_RealEstateDispositionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="AreaOfRealEstatePropertyDisposedOf" id="sret_AreaOfRealEstatePropertyDisposedOf" type="dtr-types:areaItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="GateCityBankMember" id="sret_GateCityBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InterestRateSwapMaturingInMay2032InterestRateSwapOneMember" id="sret_InterestRateSwapMaturingInMay2032InterestRateSwapOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InterestRateSwapMaturingInMay2032InterestRateSwapTwoMember" id="sret_InterestRateSwapMaturingInMay2032InterestRateSwapTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InterestRateSwapMaturingInMay2032InterestRateSwapThreeMember" id="sret_InterestRateSwapMaturingInMay2032InterestRateSwapThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="StFossilCreekLlcMember" id="sret_StFossilCreekLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PropertyDispositionDateOfDisposal" id="sret_PropertyDispositionDateOfDisposal" type="xbrli:dateItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BusinessOperationMember" id="sret_BusinessOperationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RelatedPartyTransactionPropertyManagementAndOtherExpenses" id="sret_RelatedPartyTransactionPropertyManagementAndOtherExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EmoryNorthLibertyLcMember" id="sret_EmoryNorthLibertyLcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScheduleOfPropertyManagementFeeTableTextBlock" id="sret_ScheduleOfPropertyManagementFeeTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ScheduleOfRentIncomeTableTextBlock" id="sret_ScheduleOfRentIncomeTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="FinancingAndLeaseCostsNet" id="sret_FinancingAndLeaseCostsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ShgEmoryNorthLibertyLlcMember" id="sret_ShgEmoryNorthLibertyLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ManagementFeesOfEntity" id="sret_ManagementFeesOfEntity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="SterlingNorthlandLlcMember" id="sret_SterlingNorthlandLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NotesPayableDisclosureAbstract" id="sret_NotesPayableDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NotesReceivableAggregateAmountIssued" id="sret_NotesReceivableAggregateAmountIssued" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="LongTermDebtMaturityAfterYearFour" id="sret_LongTermDebtMaturityAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LessorOperatingLeasePaymentToBeReceivedAfterYearFour" id="sret_LessorOperatingLeasePaymentToBeReceivedAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EquityMethodInvestmentsReclassifiedToAccruedExpensesAndOtherLiabilities" id="sret_EquityMethodInvestmentsReclassifiedToAccruedExpensesAndOtherLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="SterlingOfficeAndIndustrialPropertiesLllpMember" id="sret_SterlingOfficeAndIndustrialPropertiesLllpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InterestRateSwapDecember2031Member" id="sret_InterestRateSwapDecember2031Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SterlingPointeGrandForksNdMember" id="sret_SterlingPointeGrandForksNdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RealEstatePropertyAcquisitions2025Member" id="sret_RealEstatePropertyAcquisitions2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EntityAffiliatedWithMr.ReganMember" id="sret_EntityAffiliatedWithMr.ReganMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ProceedsFromInsuranceClaims" id="sret_ProceedsFromInsuranceClaims" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="VariableInterestEntityAbstract" id="sret_VariableInterestEntityAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScheduleOfFinancialInformationOfVariableInterestEntityTableTextBlock" id="sret_ScheduleOfFinancialInformationOfVariableInterestEntityTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="IndustrialPropertyMarshallMinnesotaMember" id="sret_IndustrialPropertyMarshallMinnesotaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="StonebridgeApartmentsFargoNorthDakotaMember" id="sret_StonebridgeApartmentsFargoNorthDakotaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InterestRateSwapMaturingInDecember2030Member" id="sret_InterestRateSwapMaturingInDecember2030Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InterestRateSwapMaturingInJanuary2031Member" id="sret_InterestRateSwapMaturingInJanuary2031Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PatriciaAnnApartmentsFargoNorthDakotaMember" id="sret_PatriciaAnnApartmentsFargoNorthDakotaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CashAndCashEquivalentsIncludingOverdrafts" id="sret_CashAndCashEquivalentsIncludingOverdrafts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="NoncontrollingInterestIncreaseFromReclassificationOwnerContribution" id="sret_NoncontrollingInterestIncreaseFromReclassificationOwnerContribution" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ParkwayOfficeFargoNdMember" id="sret_ParkwayOfficeFargoNdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RealEstatePropertyAcquisitions2026Member" id="sret_RealEstatePropertyAcquisitions2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DispositionFees" id="sret_DispositionFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ProceedsFromRealEstatePartnershipInvestmentAndOtherInvestmentsNet" id="sret_ProceedsFromRealEstatePartnershipInvestmentAndOtherInvestmentsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
</xsd:schema>
