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  <xs:element id="kbsriii_MonthlyAssetManagementFeePaidInCashMember" abstract="true" name="MonthlyAssetManagementFeePaidInCashMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_FullyFundedBonusRetentionFundMember" abstract="true" name="FullyFundedBonusRetentionFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_BonusRetentionFundDepositMember" abstract="true" name="BonusRetentionFundDepositMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_PaymentsFromBonusRetentionFundMember" abstract="true" name="PaymentsFromBonusRetentionFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_DeferredAssetManagementFeesMember" abstract="true" name="DeferredAssetManagementFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_NonCompoundedReturnOnNetInvestedCapitalMember" abstract="true" name="NonCompoundedReturnOnNetInvestedCapitalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_TheRenewalAdvisoryAgreementMember" abstract="true" name="TheRenewalAdvisoryAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_DispositionFeesMember" abstract="true" name="DispositionFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_KbsCapitalAdvisorsLlcOrAffiliatesMember" abstract="true" name="KbsCapitalAdvisorsLlcOrAffiliatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_KbsCapitalAdvisorsLlcAffiliatesOrUnaffiliatedThirdPartiesMember" abstract="true" name="KbsCapitalAdvisorsLlcAffiliatesOrUnaffiliatedThirdPartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_O2023H2DividendsMember" abstract="true" name="O2023H2DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_O2023M3DividendsMember" abstract="true" name="O2023M3DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_O2023M4DividendsMember" abstract="true" name="O2023M4DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_O2023M2DividendsMember" abstract="true" name="O2023M2DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_O2023M5DividendsMember" abstract="true" name="O2023M5DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_O2023M1DividendsMember" abstract="true" name="O2023M1DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_O2023M6DividendsMember" abstract="true" name="O2023M6DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_O2023H1DividendsMember" abstract="true" name="O2023H1DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_NumberofRealEstatePropertiesDisposed" abstract="false" name="NumberofRealEstatePropertiesDisposed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="kbsriii_DerivativeNumberOfInstrumentsTerminated" abstract="false" name="DerivativeNumberOfInstrumentsTerminated" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="kbsriii_DividendReinvestmentPlanPurchasePriceForShareAsPercentOfEstimatedValue" abstract="false" name="DividendReinvestmentPlanPurchasePriceForShareAsPercentOfEstimatedValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_MonthlyAssetManagementFeePercentOfAcquisitionExpenseExcludingAcquisitionFeesRelatedToThereto" abstract="false" name="MonthlyAssetManagementFeePercentOfAcquisitionExpenseExcludingAcquisitionFeesRelatedToThereto" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantMaximumAssetManagementFeePaymentAssociatedPropertiesNumber" abstract="false" name="DebtInstrumentCovenantMaximumAssetManagementFeePaymentAssociatedPropertiesNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantMaximumAssetManagementFeePaymentPercentage" abstract="false" name="DebtInstrumentCovenantMaximumAssetManagementFeePaymentPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantDeferredAssetManagementFeePaymentPercentage" abstract="false" name="DebtInstrumentCovenantDeferredAssetManagementFeePaymentPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="kbsriii_NumberOfCompanyExecutiveOfficers" abstract="false" name="NumberOfCompanyExecutiveOfficers" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="kbsriii_NumberOfCompanyDirectors" abstract="false" name="NumberOfCompanyDirectors" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="kbsriii_RelatedPartyTransactionRenewalPeriod" abstract="false" name="RelatedPartyTransactionRenewalPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="kbsriii_RelatedPartyTransactionTerminationPeriod" abstract="false" name="RelatedPartyTransactionTerminationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="kbsriii_SellingCommissionsFeesPercentOfSalesPrice" abstract="false" name="SellingCommissionsFeesPercentOfSalesPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_SellingCommissionsFeesMaximumReductionPercentOfSalesPrice" abstract="false" name="SellingCommissionsFeesMaximumReductionPercentOfSalesPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_TheAlmadenMember" abstract="true" name="TheAlmadenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_TowersatEmeryvilleMember" abstract="true" name="TowersatEmeryvilleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_A201SpearStreetMember" abstract="true" name="A201SpearStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_PercentageOfRealEstatePortfolioOccupied" abstract="false" name="PercentageOfRealEstatePortfolioOccupied" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_NumberOfTenants" abstract="false" name="NumberOfTenants" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="kbsriii_TownCenterMember" abstract="true" name="TownCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_GatewayTechCenterMember" abstract="true" name="GatewayTechCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_TenAlmadenMember" abstract="true" name="TenAlmadenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_A3003WashingtonMember" abstract="true" name="A3003WashingtonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_A20117thStreetMember" abstract="true" name="A20117thStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_FiveOneFiveCongressMember" abstract="true" name="FiveOneFiveCongressMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_A3001WashingtonBoulevardMember" abstract="true" name="A3001WashingtonBoulevardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_CarillonMember" abstract="true" name="CarillonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_LessorOperatingLeaseAnnualizedBaseRent" abstract="false" name="LessorOperatingLeaseAnnualizedBaseRent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DisposalGroupIncludingDiscontinuedOperationRentalIncomeNetOfLeaseReserve" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRentalIncomeNetOfLeaseReserve" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DisposalGroupIncludingDiscontinuedOperationRealEstateTaxesandInsurance" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRealEstateTaxesandInsurance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DisposalGroupIncludingDiscontinuedOperationAssetManagementCosts" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationAssetManagementCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DisposalGroupIncludingDiscontinuedOperationImpairmentCharge" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationImpairmentCharge" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DisposalGroupIncludingDiscontinuedOperationCostsAndExpenses" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationCostsAndExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpenseReversal" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpenseReversal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DisposalGroupIncludingDiscontinuedOperationRealEstateCost" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRealEstateCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DisposalGroupIncludingDiscontinuedOperationRealEstateAccumulatedDepreciationAndAmortization" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRealEstateAccumulatedDepreciationAndAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DisposalGroupIncludingDiscontinuedOperationRealEstate" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRealEstate" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_TenantOriginationAndAbsorptionCostsAccumulatedAmortization" abstract="false" name="TenantOriginationAndAbsorptionCostsAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_TenantOriginationAndAbsorptionCostsNet" abstract="false" name="TenantOriginationAndAbsorptionCostsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_TenantOriginationAndAbsorptionCostsAmortizationExpense" abstract="false" name="TenantOriginationAndAbsorptionCostsAmortizationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_AboveMarketLeasesGross" abstract="false" name="AboveMarketLeasesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_AboveMarketLeasesAccumulatedAmortization" abstract="false" name="AboveMarketLeasesAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_AboveMarketLeasesAmortizationExpense" abstract="false" name="AboveMarketLeasesAmortizationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_OffMarketLeaseUnfavorableAmortizationExpense" abstract="false" name="OffMarketLeaseUnfavorableAmortizationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_TenantOriginationAndAbsorptionCostsMember" abstract="true" name="TenantOriginationAndAbsorptionCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_BelowMarketLeaseLiabilitiesMember" abstract="true" name="BelowMarketLeaseLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_FiniteLivedIntangibleAssetsWeightedAverageRemainingAmortizationPeriod" abstract="false" name="FiniteLivedIntangibleAssetsWeightedAverageRemainingAmortizationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="kbsriii_SREITMember" abstract="true" name="SREITMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_UnitsAcquiredUnits" abstract="false" name="UnitsAcquiredUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="kbsriii_UnitsAcquiredValue" abstract="false" name="UnitsAcquiredValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_UnitsAcquiredPricePerUnit" abstract="false" name="UnitsAcquiredPricePerUnit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="kbsriii_UnitsDisposedUnit" abstract="false" name="UnitsDisposedUnit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="kbsriii_UnitsDisposedValue" abstract="false" name="UnitsDisposedValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_AdditionalOneUnitAcquiredPerNumberOfUnitsHeld" abstract="false" name="AdditionalOneUnitAcquiredPerNumberOfUnitsHeld" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="kbsriii_UnitsInvestmentsUnit" abstract="false" name="UnitsInvestmentsUnit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="kbsriii_UnitsHeldUnits" abstract="false" name="UnitsHeldUnits" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="kbsriii_UnitsClosingPrice" abstract="false" name="UnitsClosingPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="kbsriii_TheAlmadenMortgageLoanMember" abstract="true" name="TheAlmadenMortgageLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_CarillonMortgageLoanMember" abstract="true" name="CarillonMortgageLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_A30013003WashingtonMortgageLoanMember" abstract="true" name="A30013003WashingtonMortgageLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_AccentureTowerRevolvingLoanMember" abstract="true" name="AccentureTowerRevolvingLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_CreditFacilityMember" abstract="true" name="CreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_ParkPlaceVillageMortgageLoanMember" abstract="true" name="ParkPlaceVillageMortgageLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_AdjustedTermSecuredOvernightFinancingRateASOFRMember" abstract="true" name="AdjustedTermSecuredOvernightFinancingRateASOFRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_LoanGuarantorAndLoanBorrowerMember" abstract="true" name="LoanGuarantorAndLoanBorrowerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_DebtConvenantPeriodAxis" abstract="true" name="DebtConvenantPeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="kbsriii_DebtConvenantPeriodDomain" abstract="true" name="DebtConvenantPeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_DebtCovenantPeriodOneMember" abstract="true" name="DebtCovenantPeriodOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_DebtCovenantPeriodTwoMember" abstract="true" name="DebtCovenantPeriodTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_DebtCovenantPeriodThreeMember" abstract="true" name="DebtCovenantPeriodThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_DebtInstrumentHoldCostsAvailableForFutureDisbursement" abstract="false" name="DebtInstrumentHoldCostsAvailableForFutureDisbursement" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentNumberOfExtensions" abstract="false" name="DebtInstrumentNumberOfExtensions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="kbsriii_DebtInstrumentExtensionPeriod" abstract="false" name="DebtInstrumentExtensionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantRequiredPropertySaleNumber" abstract="false" name="DebtInstrumentCovenantRequiredPropertySaleNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantRequiredDebtPayDownMaximumAmount" abstract="false" name="DebtInstrumentCovenantRequiredDebtPayDownMaximumAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantRequiredMaximumPrincipalBalance" abstract="false" name="DebtInstrumentCovenantRequiredMaximumPrincipalBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantDebtPaydownRequirementPercentOfPropertySaleProceeds" abstract="false" name="DebtInstrumentCovenantDebtPaydownRequirementPercentOfPropertySaleProceeds" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="kbsriii_CashSweepCollateralAccountMember" abstract="true" name="CashSweepCollateralAccountMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_NewAvailabilityOnCarillonMortgageLoanMember" abstract="true" name="NewAvailabilityOnCarillonMortgageLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_LineOfCreditFacilityAdditionalBorrowingCapacity" abstract="false" name="LineOfCreditFacilityAdditionalBorrowingCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantRequiredMaximumFacilityAmount" abstract="false" name="DebtInstrumentCovenantRequiredMaximumFacilityAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantMaximumNumberOfCountedProjects" abstract="false" name="DebtInstrumentCovenantMaximumNumberOfCountedProjects" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantFirstPortfolioLoanPropertySaleAvailableProceeds" abstract="false" name="DebtInstrumentCovenantFirstPortfolioLoanPropertySaleAvailableProceeds" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantSubsequentPortfolioLoanPropertySaleAvailableProceeds" abstract="false" name="DebtInstrumentCovenantSubsequentPortfolioLoanPropertySaleAvailableProceeds" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DisposalGroupIncludingDiscontinuedOperationConsiderationNetOfCreditsAndClosingCosts" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationConsiderationNetOfCreditsAndClosingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_PaymentsToCollateralAccount" abstract="false" name="PaymentsToCollateralAccount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantExcessCashFlowDepositRequirementPercentage" abstract="false" name="DebtInstrumentCovenantExcessCashFlowDepositRequirementPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantSaleOfSREITCashProceedsToBeApplied" abstract="false" name="DebtInstrumentCovenantSaleOfSREITCashProceedsToBeApplied" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantSaleOfSREITCashProceedsRequiredPrepaymentPercentageOfOutstandingObligations" abstract="false" name="DebtInstrumentCovenantSaleOfSREITCashProceedsRequiredPrepaymentPercentageOfOutstandingObligations" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantSaleOfSREITCashProceedsRequiredDistributionToFundCapitalAndCashFlowNeedsPercentage" abstract="false" name="DebtInstrumentCovenantSaleOfSREITCashProceedsRequiredDistributionToFundCapitalAndCashFlowNeedsPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantSaleOfSREITCashProceedsRequiredToFundTheCashSweepCollateralAccountForCapitalNeedsPercentage" abstract="false" name="DebtInstrumentCovenantSaleOfSREITCashProceedsRequiredToFundTheCashSweepCollateralAccountForCapitalNeedsPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantSaleOfAccentureTowerCashProceedsFundCashSweepCollateralAccount" abstract="false" name="DebtInstrumentCovenantSaleOfAccentureTowerCashProceedsFundCashSweepCollateralAccount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantSaleOfTheAlmadenRequiredCashProceedsToReduceObligations" abstract="false" name="DebtInstrumentCovenantSaleOfTheAlmadenRequiredCashProceedsToReduceObligations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantDefaultOccursIfOtherIndebtednessDemandMadeOrGuaranteedAmount" abstract="false" name="DebtInstrumentCovenantDefaultOccursIfOtherIndebtednessDemandMadeOrGuaranteedAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_SecuredOvernightFinancingRateSOFRFallbackMember" abstract="true" name="SecuredOvernightFinancingRateSOFRFallbackMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_DerivativeInstrumentsWeightedAverageFixPayRate" abstract="false" name="DerivativeInstrumentsWeightedAverageFixPayRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_DerivativeInstrumentsWeightedAverageRemainingTerminYears" abstract="false" name="DerivativeInstrumentsWeightedAverageRemainingTerminYears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="kbsriii_InterestRateSwapAtFairValueMember" abstract="true" name="InterestRateSwapAtFairValueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_MeasurementInputTerminalCapRateMember" abstract="true" name="MeasurementInputTerminalCapRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_RealEstatePropertiesMeasurementInput" abstract="false" name="RealEstatePropertiesMeasurementInput" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_AssetManagementFeesMember" abstract="true" name="AssetManagementFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_ReimbursementOfOperatingExpensesMember" abstract="true" name="ReimbursementOfOperatingExpensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_SalariesBenefitsAndOverheadMember" abstract="true" name="SalariesBenefitsAndOverheadMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_IncurredCostsOfSupplementalCoverageMember" abstract="true" name="IncurredCostsOfSupplementalCoverageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_AssetManagementFeesDeferredInConnectionWithAgreementsRelatedToTheRefinancingOfTheCompanysDebtObligationsMember" abstract="true" name="AssetManagementFeesDeferredInConnectionWithAgreementsRelatedToTheRefinancingOfTheCompanysDebtObligationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_LindaBren2017TrustMember" abstract="true" name="LindaBren2017TrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="kbsriii_LessorOperatingLeasePercentOfTotalRentableSquareFeet" abstract="false" name="LessorOperatingLeasePercentOfTotalRentableSquareFeet" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_LessorOperatingLeaseAverageAnnualizedBaseRentPerSquareFoot" abstract="false" name="LessorOperatingLeaseAverageAnnualizedBaseRentPerSquareFoot" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>
  <xs:element id="kbsriii_RelatedPartyTransactionAcquisitionFeeAsPercentOfAcquisitionPriceOfRealEstate" abstract="false" name="RelatedPartyTransactionAcquisitionFeeAsPercentOfAcquisitionPriceOfRealEstate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_RelatedPartyTransactionDividendFeeAsPercentOfSalePriceOfRealEstate" abstract="false" name="RelatedPartyTransactionDividendFeeAsPercentOfSalePriceOfRealEstate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_RelatedPartyTransactionDevelopmentManagementFeeAsPercentOfTotalProjectCost" abstract="false" name="RelatedPartyTransactionDevelopmentManagementFeeAsPercentOfTotalProjectCost" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_RecordedAndUnrecordedUnconditionalPurchaseObligation" abstract="false" name="RecordedAndUnrecordedUnconditionalPurchaseObligation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_DebtInstrumentCovenantDeferredAssetDispositionFeesPaymentPercentage" abstract="false" name="DebtInstrumentCovenantDeferredAssetDispositionFeesPaymentPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="kbsriii_RealEstateAndAccumulatedDepreciationOwnershipPercent" abstract="false" name="RealEstateAndAccumulatedDepreciationOwnershipPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="kbsriii_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndBuildingsAndImprovements" abstract="false" name="RealEstateAndAccumulatedDepreciationInitialCostOfLandAndBuildingsAndImprovements" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_SECScheduleIIIRealEstateImpairments" abstract="false" name="SECScheduleIIIRealEstateImpairments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_SECSchedule1228RealEstateCompaniesInvestmentInRealEstateDeedInLieuOfForeclosure" abstract="false" name="SECSchedule1228RealEstateCompaniesInvestmentInRealEstateDeedInLieuOfForeclosure" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="kbsriii_SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationDeedInLieuOfForeclosure" abstract="false" name="SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationDeedInLieuOfForeclosure" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
