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  <xs:element id="bxp_ContractualSalePrice" abstract="false" name="ContractualSalePrice" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_RestonNextRetailMember" abstract="true" name="RestonNextRetailMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneZeroFiveZeroWinterStreetMember" abstract="true" name="OneZeroFiveZeroWinterStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_RestonNextOfficePhaseIIMember" abstract="true" name="RestonNextOfficePhaseIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeFourThreeMadisonAvenueMember" abstract="true" name="ThreeFourThreeMadisonAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_NumberOfFloors" abstract="false" name="NumberOfFloors" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_TypeOfLeaseAxis" abstract="true" name="TypeOfLeaseAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="bxp_TypeOfLeaseDomain" abstract="true" name="TypeOfLeaseDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OperatingLeaseMember" abstract="true" name="OperatingLeaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FinanceLeaseMember" abstract="true" name="FinanceLeaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_LesseeCancelableLease" abstract="false" name="LesseeCancelableLease" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bxp_NumberOfNonCancelableLeases" abstract="false" name="NumberOfNonCancelableLeases" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bxp_FinanceLeasesUnderDevelopment" abstract="false" name="FinanceLeasesUnderDevelopment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_OperatingLeasesUnderDevelopment" abstract="false" name="OperatingLeasesUnderDevelopment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bxp_SantaMonicaBusinessParkMember" abstract="true" name="SantaMonicaBusinessParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneSevenOneDartmouthMember" abstract="true" name="OneSevenOneDartmouthMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_LesseePurchaseOptionReasonablyCertainOfExercising" abstract="false" name="LesseePurchaseOptionReasonablyCertainOfExercising" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_NumberOfTenantsAboveConcentrationAmount" abstract="false" name="NumberOfTenantsAboveConcentrationAmount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bxp_DeferredCostsGross" abstract="false" name="DeferredCostsGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_AccumulatedAmortizationLeasingAndFinancingCosts" abstract="false" name="AccumulatedAmortizationLeasingAndFinancingCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_SquareFourZeroSevenLimitedPartnershipMember" abstract="true" name="SquareFourZeroSevenLimitedPartnershipMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_WpProjectDeveloperLlcMember" abstract="true" name="WpProjectDeveloperLlcMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FiveZeroZeroNorthCapitolLlcMember" abstract="true" name="FiveZeroZeroNorthCapitolLlcMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FivezerooneKStreetLLCMember" abstract="true" name="FivezerooneKStreetLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_PodiumVentureLLCMember" abstract="true" name="PodiumVentureLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ResidentialTowerDeveloperLLCMember" abstract="true" name="ResidentialTowerDeveloperLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_HotelTowerDeveloperLLCMember" abstract="true" name="HotelTowerDeveloperLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OfficeVentureLLCMember" abstract="true" name="OfficeVentureLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneTwoSixFiveMainOfficeJVLLCMember" abstract="true" name="OneTwoSixFiveMainOfficeJVLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_BNYTowerHoldingsLLCMember" abstract="true" name="BNYTowerHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CAColoradoCenterLLCMember" abstract="true" name="CAColoradoCenterLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SevensevenfivezeroWisconsinAvenueLLCMember" abstract="true" name="SevensevenfivezeroWisconsinAvenueLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_BPM3HBVentureLLCMember" abstract="true" name="BPM3HBVentureLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_PlatformSixteenMember" abstract="true" name="PlatformSixteenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_RosecransSepulvedaPartnersFourLLCMember" abstract="true" name="RosecransSepulvedaPartnersFourLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SafecoPlazaREITLLCMember" abstract="true" name="SafecoPlazaREITLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeSixZeroPASHoldcoLLCMember" abstract="true" name="ThreeSixZeroPASHoldcoLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_PRIIBXPRestonGatewayLLCMember" abstract="true" name="PRIIBXPRestonGatewayLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_A751GatewayHoldingsLLCMember" abstract="true" name="A751GatewayHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoZeroZeroFifthAvenueJVLLCMember" abstract="true" name="TwoZeroZeroFifthAvenueJVLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ABXPWorldgateInvestmentsLLCMember" abstract="true" name="ABXPWorldgateInvestmentsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CAB290ColesVentureLLCMember" abstract="true" name="CAB290ColesVentureLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CAB290ColesHoldcoLLCMember" abstract="true" name="CAB290ColesHoldcoLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SeventeenHartwellAvenueJVLLCMember" abstract="true" name="SeventeenHartwellAvenueJVLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_EntityOwningLandAndInfrastructureOfProjectMember" abstract="true" name="EntityOwningLandAndInfrastructureOfProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SafecoPartnerEntityTwoMember" abstract="true" name="SafecoPartnerEntityTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember" abstract="true" name="ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeSixZeroParkAvenueSouthPartnersEntityOneMember" abstract="true" name="ThreeSixZeroParkAvenueSouthPartnersEntityOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SafecoPartnerEntityOneMember" abstract="true" name="SafecoPartnerEntityOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CompanysShareMember" abstract="true" name="CompanysShareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_NameOfJointVentureProperty" abstract="false" name="NameOfJointVentureProperty" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxp_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesnet" abstract="false" name="InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesnet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_InternalRateOfReturnOnPreferredEquity" abstract="false" name="InternalRateOfReturnOnPreferredEquity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_InvestmentsInUnconsolidatedJointVenturesAbstract" abstract="true" name="InvestmentsInUnconsolidatedJointVenturesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxp_RemainingOtherInvestmentMember" abstract="true" name="RemainingOtherInvestmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OtherUnconsolidatedJVSMember" abstract="true" name="OtherUnconsolidatedJVSMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SafecoPlazaMember" abstract="true" name="SafecoPlazaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CompanyShareOfEquity" abstract="false" name="CompanyShareOfEquity" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_JointVenturePartnerMember" abstract="true" name="JointVenturePartnerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_BasisDifferentialMember" abstract="true" name="BasisDifferentialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_BpCrfNineZeroOneNewYorkAvenueLlcMember" abstract="true" name="BpCrfNineZeroOneNewYorkAvenueLlcMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_NineZeroOneNewYorkAvenueMember" abstract="true" name="NineZeroOneNewYorkAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CompanysShareOfNetIncomeLoss" abstract="false" name="CompanysShareOfNetIncomeLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_GainOnUnconsolidatedJointVentureInvestment" abstract="false" name="GainOnUnconsolidatedJointVentureInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_IncomeStatementBasisDifferential" abstract="false" name="IncomeStatementBasisDifferential" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_SevenSevenFiveZeroWisconsinAvenueMember" abstract="true" name="SevenSevenFiveZeroWisconsinAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_A290ColesStreetMember" abstract="true" name="A290ColesStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeSixZeroParkAvenueSouthMember" abstract="true" name="ThreeSixZeroParkAvenueSouthMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_HubOnCausewayPodiumAndOneZeroZeroCausewayStreetMember" abstract="true" name="HubOnCausewayPodiumAndOneZeroZeroCausewayStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneZeroZeroCausewayStreetMember" abstract="true" name="OneZeroZeroCausewayStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_HubOnCausewayPodiumMember" abstract="true" name="HubOnCausewayPodiumMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_BeachCitiesMediaCampusMember" abstract="true" name="BeachCitiesMediaCampusMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeHudsonBoulevardMember" abstract="true" name="ThreeHudsonBoulevardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_MarketSquareNorthMember" abstract="true" name="MarketSquareNorthMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SevenFiveOneGatewayBoulevardMember" abstract="true" name="SevenFiveOneGatewayBoulevardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_LongTermDebtIncludingAccruedInterest" abstract="false" name="LongTermDebtIncludingAccruedInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_ExtensionOptioninyears" abstract="false" name="ExtensionOptioninyears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_OtherThanTemporaryImpairmentLossesEquityMethodInvestmentsCapitalizationRate" abstract="false" name="OtherThanTemporaryImpairmentLossesEquityMethodInvestmentsCapitalizationRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_OtherThanTemporaryImpairmentLossesEquityMethodInvestmentsDiscountRate" abstract="false" name="OtherThanTemporaryImpairmentLossesEquityMethodInvestmentsDiscountRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_FixedRateMortgageMember" abstract="true" name="FixedRateMortgageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_NumberOfVariableMortgageLoans" abstract="false" name="NumberOfVariableMortgageLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_Numberofextensions" abstract="false" name="Numberofextensions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_LongTermDebtRenewalTerm" abstract="false" name="LongTermDebtRenewalTerm" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bxp_Numberofbuildings" abstract="false" name="Numberofbuildings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember" abstract="true" name="ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember" abstract="true" name="ThreePointFourNineFivePercentUnsecuredSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SixPointNineTwoFourPercentUnsecuredSeniorNotesMember" abstract="true" name="SixPointNineTwoFourPercentUnsecuredSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FourPointSixTwoEightPercentUnsecuredSeniorNotesMember" abstract="true" name="FourPointSixTwoEightPercentUnsecuredSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreePointFiveZeroFivePercentUnsecuredSeniorNotesMember" abstract="true" name="ThreePointFiveZeroFivePercentUnsecuredSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoPointNineEightFourPercentUnsecuredSeniorNotesMember" abstract="true" name="TwoPointNineEightFourPercentUnsecuredSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreepointthreefourthreepercentunsecuredseniornotesMember" abstract="true" name="ThreepointthreefourthreepercentunsecuredseniornotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoPointSixSevenOnePercentUnsecuredSeniorNotesMember" abstract="true" name="TwoPointSixSevenOnePercentUnsecuredSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoPointFiveTwoFourPercentUnsecuredSeniorNotesMember" abstract="true" name="TwoPointFiveTwoFourPercentUnsecuredSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SixPointSixOneNinePercentMember" abstract="true" name="SixPointSixOneNinePercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FivePointEightFourTwoPercentMember" abstract="true" name="FivePointEightFourTwoPercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember" abstract="true" name="ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_LeverageRatioMaximum" abstract="false" name="LeverageRatioMaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_SecuredDebtLeverageRatioMaximum" abstract="false" name="SecuredDebtLeverageRatioMaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_InterestCoverageMinimum" abstract="false" name="InterestCoverageMinimum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="bxp_UnencumberedAssetValueMinimum" abstract="false" name="UnencumberedAssetValueMinimum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_Per1000PrincipalAmountMember" abstract="true" name="Per1000PrincipalAmountMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ProceedsFromConvertibleDebtNetOfIssuanceAndHedgingCosts" abstract="false" name="ProceedsFromConvertibleDebtNetOfIssuanceAndHedgingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_DebtInstrumentConvertibleExchangePremiumPercentage" abstract="false" name="DebtInstrumentConvertibleExchangePremiumPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_CappedCallPremium" abstract="false" name="CappedCallPremium" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_TermLoanFacilityMember" abstract="true" name="TermLoanFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_DailySimpleSecuredOvernightFinancingRateSOFRMember" abstract="true" name="DailySimpleSecuredOvernightFinancingRateSOFRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_A2023UnsecuredTermLoanMember" abstract="true" name="A2023UnsecuredTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_A2024UnsecuredTermLoanMember" abstract="true" name="A2024UnsecuredTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_A2024UnsecuredTermLoanAnd2023UnsecuredTermLoanMember" abstract="true" name="A2024UnsecuredTermLoanAnd2023UnsecuredTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ExtensionOptionInMonths" abstract="false" name="ExtensionOptionInMonths" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_DebtInstrumentAlternateBasisSpreadOnVariableRate" abstract="false" name="DebtInstrumentAlternateBasisSpreadOnVariableRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_LeverageRatio" abstract="false" name="LeverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_UnsecuredDebtLeverageRatio" abstract="false" name="UnsecuredDebtLeverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_UnsecuredDebtLeverageRatioMaximum" abstract="false" name="UnsecuredDebtLeverageRatioMaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_UnsecuredDebtInterestCoverageRatio" abstract="false" name="UnsecuredDebtInterestCoverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="bxp_CommercialPaperMaximumBorrowingCapacity" abstract="false" name="CommercialPaperMaximumBorrowingCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_LineOfCreditAdditionalBorrowingCapacity" abstract="false" name="LineOfCreditAdditionalBorrowingCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_LineOfCreditBorrowingCapacityIncreaseDecrease" abstract="false" name="LineOfCreditBorrowingCapacityIncreaseDecrease" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_LineOfCreditFacilityInterestRateReduction" abstract="false" name="LineOfCreditFacilityInterestRateReduction" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_LineOfCreditFacilityMaximumPercentForLoanAdvances" abstract="false" name="LineOfCreditFacilityMaximumPercentForLoanAdvances" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_FixedChargeCoverageMaximum" abstract="false" name="FixedChargeCoverageMaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="bxp_FixedChargeCoverageMinimum" abstract="false" name="FixedChargeCoverageMinimum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="bxp_SantaMonicaBusinessParkAndTwoZeroTwoFourUnsecuredTermLoanMember" abstract="true" name="SantaMonicaBusinessParkAndTwoZeroTwoFourUnsecuredTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember" abstract="true" name="ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CommitmentsAndContingenciesDisclosureTable" abstract="true" name="CommitmentsAndContingenciesDisclosureTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bxp_MetropolitanSquareMember" abstract="true" name="MetropolitanSquareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoNineZeroBinneyMember" abstract="true" name="TwoNineZeroBinneyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoFiveZeroBinneyStreetMember" abstract="true" name="TwoFiveZeroBinneyStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SixZeroOneLexingtonAvenueMember" abstract="true" name="SixZeroOneLexingtonAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SevenSixSevenVentureLlcMember" abstract="true" name="SevenSixSevenVentureLlcMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CommitmentsAndContingenciesLineItems" abstract="true" name="CommitmentsAndContingenciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxp_LetterOfCreditAndPerformanceObligation" abstract="false" name="LetterOfCreditAndPerformanceObligation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_EstimatedLiabilityNotAccrued" abstract="false" name="EstimatedLiabilityNotAccrued" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_ConsolidatedEntitiesOwnershipPercentage" abstract="false" name="ConsolidatedEntitiesOwnershipPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_Leasedpercentage" abstract="false" name="Leasedpercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_InsurancePolicyLimit" abstract="false" name="InsurancePolicyLimit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_CoverageForActsOfTerrorismUnderTriaCoveredInExcessOfAmountCoveredByIxp" abstract="false" name="CoverageForActsOfTerrorismUnderTriaCoveredInExcessOfAmountCoveredByIxp" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_CoverageForActsOfTerrorismUnderTRIACoveredInExcessOfAmountCoveredByIXPPropertyAndTerrorism" abstract="false" name="CoverageForActsOfTerrorismUnderTRIACoveredInExcessOfAmountCoveredByIXPPropertyAndTerrorism" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_CoverageForActsOfTerrorismUnderTRIACoveredInExcessOfAmountCoveredByIXPTerrorism" abstract="false" name="CoverageForActsOfTerrorismUnderTRIACoveredInExcessOfAmountCoveredByIXPTerrorism" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_SumOfCoverageCoveredByIXPAndExcessCoverageForPropertyAndTerrorism" abstract="false" name="SumOfCoverageCoveredByIXPAndExcessCoverageForPropertyAndTerrorism" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_PerOccurrenceLimitForNbcrCoverage" abstract="false" name="PerOccurrenceLimitForNbcrCoverage" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_ProgramTriggerValue" abstract="false" name="ProgramTriggerValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_ProgramTriggerCoinsurance" abstract="false" name="ProgramTriggerCoinsurance" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_Programtriggerdeductible" abstract="false" name="Programtriggerdeductible" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_PerOccurrenceLimitOfEarthQuakeInsuranceSanFranciscoandLosAngeles" abstract="false" name="PerOccurrenceLimitOfEarthQuakeInsuranceSanFranciscoandLosAngeles" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_AnnualAggregateLimitOfEarthQuakeInsuranceSanFranciscoandLosAngeles" abstract="false" name="AnnualAggregateLimitOfEarthQuakeInsuranceSanFranciscoandLosAngeles" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_AmountOfEarthquakeInsuranceProvidedByIXPLLCAsDirectInsurerSanFranciscoandLosAngeles" abstract="false" name="AmountOfEarthquakeInsuranceProvidedByIXPLLCAsDirectInsurerSanFranciscoandLosAngeles" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_EarthquakeDeductibleInsurancePercentageOfValueOfTheAffectedPropertySanFranciscoandLosAngeles" abstract="false" name="EarthquakeDeductibleInsurancePercentageOfValueOfTheAffectedPropertySanFranciscoandLosAngeles" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_PerOccurrenceLimitOfEarthquakeInsuranceSeattle" abstract="false" name="PerOccurrenceLimitOfEarthquakeInsuranceSeattle" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_AnnualAggregateLimitOfEarthquakeInsuranceSeattle" abstract="false" name="AnnualAggregateLimitOfEarthquakeInsuranceSeattle" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_EarthquakeDeductibleInsurancePercentageOfValueOfTheAffectedPropertySeattle" abstract="false" name="EarthquakeDeductibleInsurancePercentageOfValueOfTheAffectedPropertySeattle" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_OperatingPartnershipGuaranteeToCoverLiabilitiesOfSubsidiary" abstract="false" name="OperatingPartnershipGuaranteeToCoverLiabilitiesOfSubsidiary" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_OpUnitsMember" abstract="true" name="OpUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_MYLTIPTwoThousandTwentyThreeMember" abstract="true" name="MYLTIPTwoThousandTwentyThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_MYLTIPTwoThousandTwentyFourMember" abstract="true" name="MYLTIPTwoThousandTwentyFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_MYLTIPTwoThousandTwentyFiveMember" abstract="true" name="MYLTIPTwoThousandTwentyFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_A2025OPPMember" abstract="true" name="A2025OPPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_A2012OPPAnd20132022MYLTIPMember" abstract="true" name="A2012OPPAnd20132022MYLTIPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_MYLTIPTwoThousandTwentyTwoMember" abstract="true" name="MYLTIPTwoThousandTwentyTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_MYLTIPTwoThousandTwentyOneMember" abstract="true" name="MYLTIPTwoThousandTwentyOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_MYLTIPTwoThousandTwentyMember" abstract="true" name="MYLTIPTwoThousandTwentyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_Finalawardspercentageoftarget" abstract="false" name="Finalawardspercentageoftarget" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_ValueOfMyltipAwards" abstract="false" name="ValueOfMyltipAwards" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_UnvestedMYLTIPUnitsMember" abstract="true" name="UnvestedMYLTIPUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OpUnitsAndLTIPUnitsMember" abstract="true" name="OpUnitsAndLTIPUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ConversionOf2012OPPUnitsAndMYLTIPSMember" abstract="true" name="ConversionOf2012OPPUnitsAndMYLTIPSMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_UnvestedMYLTIPAnd2025OPPDistributionsAsComparedToTotalDistributionsPercentage" abstract="false" name="UnvestedMYLTIPAnd2025OPPDistributionsAsComparedToTotalDistributionsPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_RestrictionOnRedemption" abstract="false" name="RestrictionOnRedemption" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_OpUnitEquivalenceToCommonStock" abstract="false" name="OpUnitEquivalenceToCommonStock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bxp_MinorityInterestMember" abstract="true" name="MinorityInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_AtmProgramMember" abstract="true" name="AtmProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_AtMarketStockOfferingProgramAggregateValueOfCommonStock" abstract="false" name="AtMarketStockOfferingProgramAggregateValueOfCommonStock" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_AtMarketStockOfferingProgramMaximumLengthOfSaleinyears" abstract="false" name="AtMarketStockOfferingProgramMaximumLengthOfSaleinyears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_StockholdersEquityPartnerCapitalAbstract" abstract="true" name="StockholdersEquityPartnerCapitalAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxp_NetOperatingIncome" abstract="false" name="NetOperatingIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_RentalRevenueTotal" abstract="false" name="RentalRevenueTotal" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_BostonMember" abstract="true" name="BostonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_LosAngelesMember" abstract="true" name="LosAngelesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SanFranciscoMember" abstract="true" name="SanFranciscoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SeattleMember" abstract="true" name="SeattleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_RentalRevenueOffice" abstract="false" name="RentalRevenueOffice" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_RentalRevenueResidential" abstract="false" name="RentalRevenueResidential" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_PercentageOfTotalRevenue" abstract="false" name="PercentageOfTotalRevenue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_RentalExpensesOffice" abstract="false" name="RentalExpensesOffice" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_RentalExpensesResidential" abstract="false" name="RentalExpensesResidential" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_RentalExpensesOperatingExpensesTotal" abstract="false" name="RentalExpensesOperatingExpensesTotal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_PercentageOfTotalRentalExpenses" abstract="false" name="PercentageOfTotalRentalExpenses" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_PercentageOfTotalNetOperatingIncome" abstract="false" name="PercentageOfTotalNetOperatingIncome" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_PercentageofCompanysShareofNetOperatingIncome" abstract="false" name="PercentageofCompanysShareofNetOperatingIncome" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bxp_RedeemableCommonUnits" abstract="false" name="RedeemableCommonUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bxp_NetIncomeLossAvailableToCommonStockholdersAfterAllocationofUndistributedEarningstoParticipatingSecuritiesBasic" abstract="false" name="NetIncomeLossAvailableToCommonStockholdersAfterAllocationofUndistributedEarningstoParticipatingSecuritiesBasic" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_Allocationofundistributedearningstoparticipatingsecuritiesinshares" abstract="false" name="Allocationofundistributedearningstoparticipatingsecuritiesinshares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bxp_WeightedAverageNumberOfSharesOutstandingAfterAllocationofUndistributedEarningstoParticipatingSecuritiesBasicinshares" abstract="false" name="WeightedAverageNumberOfSharesOutstandingAfterAllocationofUndistributedEarningstoParticipatingSecuritiesBasicinshares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bxp_WeightedAverageNumberDilutedSharesOutstandingAdjustmentpershare" abstract="false" name="WeightedAverageNumberDilutedSharesOutstandingAdjustmentpershare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bxp_Allocationofundistributedearningstoparticipatingsecuritiespershares" abstract="false" name="Allocationofundistributedearningstoparticipatingsecuritiespershares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bxp_DefinedContributionPlanEmployerMatchingContributionEligibleEarningsLimitByIRSAmount" abstract="false" name="DefinedContributionPlanEmployerMatchingContributionEligibleEarningsLimitByIRSAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_ShareBasedPaymentArrangementPerformanceTierAxis" abstract="true" name="ShareBasedPaymentArrangementPerformanceTierAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="bxp_ShareBasedPaymentArrangementPerformanceTierDomain" abstract="true" name="ShareBasedPaymentArrangementPerformanceTierDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TierEightMember" abstract="true" name="TierEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TierSevenMember" abstract="true" name="TierSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TierSixMember" abstract="true" name="TierSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TierFiveMember" abstract="true" name="TierFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TierFourMember" abstract="true" name="TierFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TierThreeMember" abstract="true" name="TierThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TierTwoMember" abstract="true" name="TierTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TierOneMember" abstract="true" name="TierOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ShareBasedPaymentArrangementDividendAdjustedSharePricePerformance" abstract="false" name="ShareBasedPaymentArrangementDividendAdjustedSharePricePerformance" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bxp_CommonStockWeightedAveragePrice" abstract="false" name="CommonStockWeightedAveragePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bxp_ValueOfLtipUnitsIssued" abstract="false" name="ValueOfLtipUnitsIssued" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_EmployeeStockPurchasePlansWeightedAveragePurchasePriceOfSharesIssued" abstract="false" name="EmployeeStockPurchasePlansWeightedAveragePurchasePriceOfSharesIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bxp_TwoThousandTwentyOneStockIncentivePlanMember" abstract="true" name="TwoThousandTwentyOneStockIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanExpirationPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanExpirationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bxp_ValueOf2025OPPUnitsIssued" abstract="false" name="ValueOf2025OPPUnitsIssued" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedTarget" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedTarget" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis" abstract="true" name="StockOptionAndIncentivePlanAndStockRepurchasePlanAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain" abstract="true" name="StockOptionAndIncentivePlanAndStockRepurchasePlanDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_LTIPand2014MYLTIPUnitsMember" abstract="true" name="LTIPand2014MYLTIPUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_LtipsincludingvestedMYLTIPSAndRestrictedStockMember" abstract="true" name="LtipsincludingvestedMYLTIPSAndRestrictedStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_EmployeeAndDirectorPaymentPerShare" abstract="false" name="EmployeeAndDirectorPaymentPerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bxp_NumberOfBusinessDaysAverageClosingPrice" abstract="false" name="NumberOfBusinessDaysAverageClosingPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_RealEstateBrokerageFirmMember" abstract="true" name="RealEstateBrokerageFirmMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_DirectorCessationMemberMember" abstract="true" name="DirectorCessationMemberMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FiveZeroZeroNorthCapitolMember" abstract="true" name="FiveZeroZeroNorthCapitolMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_NumberOfNonEmployeeDirectorsElectingToReceiveDeferredStockUnits" abstract="false" name="NumberOfNonEmployeeDirectorsElectingToReceiveDeferredStockUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxp_ShadyGroveParcelOneMember" abstract="true" name="ShadyGroveParcelOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TheLoftsAtAtlanticWharfMember" abstract="true" name="TheLoftsAtAtlanticWharfMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_MYLTIPTwoThousandTwentySixMember" abstract="true" name="MYLTIPTwoThousandTwentySixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SevenSixSevenFifthAvenueTheGeneralMotorsBuildingMember" abstract="true" name="SevenSixSevenFifthAvenueTheGeneralMotorsBuildingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_PrudentialCenterMember" abstract="true" name="PrudentialCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_EmbarcaderoCenterMember" abstract="true" name="EmbarcaderoCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeNineNineParkAvenueMember" abstract="true" name="ThreeNineNineParkAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoZeroZeroClarendonStreetAndGarageMember" abstract="true" name="TwoZeroZeroClarendonStreetAndGarageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SalesforceTowerMember" abstract="true" name="SalesforceTowerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoFiveZeroWestFiftyFifthStreetMember" abstract="true" name="TwoFiveZeroWestFiftyFifthStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneZeroZeroFederalStreetMember" abstract="true" name="OneZeroZeroFederalStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_A7TimesSquareMember" abstract="true" name="A7TimesSquareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_MadisonCentreMember" abstract="true" name="MadisonCentreMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CarnegieCenterMember" abstract="true" name="CarnegieCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_RestonNextMember" abstract="true" name="RestonNextMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_AtlanticWharfMember" abstract="true" name="AtlanticWharfMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoOneZeroZeroPennsylvaniaAvenueMember" abstract="true" name="TwoOneZeroZeroPennsylvaniaAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FiveNineNineLexingtonAvenueMember" abstract="true" name="FiveNineNineLexingtonAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FountainSquareMember" abstract="true" name="FountainSquareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FiveZeroOneMadisonAvenueMember" abstract="true" name="FiveZeroOneMadisonAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeTwoFiveMainStreetMember" abstract="true" name="ThreeTwoFiveMainStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SixEightZeroFolsomStreetMember" abstract="true" name="SixEightZeroFolsomStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoTwoZeroZeroPennsylvaniaAvenueMember" abstract="true" name="TwoTwoZeroZeroPennsylvaniaAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneFourFiveBroadwayMember" abstract="true" name="OneFourFiveBroadwayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SouthOfMarketAndDemocracyTowerMember" abstract="true" name="SouthOfMarketAndDemocracyTowerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_BayColonyCorporateCenterMember" abstract="true" name="BayColonyCorporateCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FiveThreeFiveMissionStreetMember" abstract="true" name="FiveThreeFiveMissionStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ReservoirPlaceMember" abstract="true" name="ReservoirPlaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_MountainViewResearchParkMember" abstract="true" name="MountainViewResearchParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneFreedomSquareMember" abstract="true" name="OneFreedomSquareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoFreedomSquareMember" abstract="true" name="TwoFreedomSquareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_KingstowneTowneCenterMember" abstract="true" name="KingstowneTowneCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneAndTwoRestonOverlookMember" abstract="true" name="OneAndTwoRestonOverlookMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_WestonCorporateCenterMember" abstract="true" name="WestonCorporateCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_DiscoverySquareMember" abstract="true" name="DiscoverySquareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SeventeenFiftyPresidentsStreetMember" abstract="true" name="SeventeenFiftyPresidentsStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeFiveFiveMainStreetMember" abstract="true" name="ThreeFiveFiveMainStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_WalthamWestonCorporateCenterMember" abstract="true" name="WalthamWestonCorporateCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SumnerSquareMember" abstract="true" name="SumnerSquareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TenCityPointMember" abstract="true" name="TenCityPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_NinetyBroadwayMember" abstract="true" name="NinetyBroadwayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoThreeZeroCityPointMember" abstract="true" name="TwoThreeZeroCityPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SevenSevenCityPointMember" abstract="true" name="SevenSevenCityPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwentyCityPointMember" abstract="true" name="TwentyCityPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_WisconsinPlaceMember" abstract="true" name="WisconsinPlaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoFourFourZeroWestElCaminoRealMember" abstract="true" name="TwoFourFourZeroWestElCaminoRealMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_EightNineZeroWinterStreetMember" abstract="true" name="EightNineZeroWinterStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_RestonCorporateCenterMember" abstract="true" name="RestonCorporateCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoFiveFiveMainStreetMember" abstract="true" name="TwoFiveFiveMainStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_UniversityPlaceMember" abstract="true" name="UniversityPlaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CapitalGalleryMember" abstract="true" name="CapitalGalleryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneFiveZeroBroadwayMember" abstract="true" name="OneFiveZeroBroadwayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneZeroFiveBroadwayMember" abstract="true" name="OneZeroFiveBroadwayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_LexingtonOfficeParkMember" abstract="true" name="LexingtonOfficeParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThePointMember" abstract="true" name="ThePointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SixNineZeroFolsomStreetMember" abstract="true" name="SixNineZeroFolsomStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TheAvantRetailMember" abstract="true" name="TheAvantRetailMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeTwoHartwellAvenueMember" abstract="true" name="ThreeTwoHartwellAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_FourFiveThreeRavendaleDriveMember" abstract="true" name="FourFiveThreeRavendaleDriveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneTwoFiveBroadwayMember" abstract="true" name="OneTwoFiveBroadwayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneEightZeroCityPointMember" abstract="true" name="OneEightZeroCityPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeZeroZeroBinneyStreetMember" abstract="true" name="ThreeZeroZeroBinneyStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_EightEightZeroWinterStreetMember" abstract="true" name="EightEightZeroWinterStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TwoZeroZeroWestStreetMember" abstract="true" name="TwoZeroZeroWestStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_A153211SecondAvenueMember" abstract="true" name="A153211SecondAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneZeroThreeCityPointMember" abstract="true" name="OneZeroThreeCityPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_ThreeThreeHaydenAvenueMember" abstract="true" name="ThreeThreeHaydenAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_NineTwoOneZeroZeroHaydenAvenueMember" abstract="true" name="NineTwoOneZeroZeroHaydenAvenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_TheSkylyneMember" abstract="true" name="TheSkylyneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_BostonMarriottCambridgeMember" abstract="true" name="BostonMarriottCambridgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_KendallCenterGreenGarageMember" abstract="true" name="KendallCenterGreenGarageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_KendallCenterYellowGarageMember" abstract="true" name="KendallCenterYellowGarageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_OneTwoOneBroadwayMember" abstract="true" name="OneTwoOneBroadwayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SevenTwoFiveTwelfthStreetMember" abstract="true" name="SevenTwoFiveTwelfthStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_SevenSevenSevenHarrisonStreetMember" abstract="true" name="SevenSevenSevenHarrisonStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_BackBayStationMasterPlanMember" abstract="true" name="BackBayStationMasterPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_CityPointSouthMasterPlanMember" abstract="true" name="CityPointSouthMasterPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_NorthFirstMasterPlanMember" abstract="true" name="NorthFirstMasterPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_KendallCenterMasterPlanMember" abstract="true" name="KendallCenterMasterPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_RestonGatewayMasterPlanMember" abstract="true" name="RestonGatewayMasterPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_WestonQuarryMember" abstract="true" name="WestonQuarryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_RestonOverlookMasterPlanMember" abstract="true" name="RestonOverlookMasterPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_GarageMember" abstract="true" name="GarageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_DevelopmentMember" abstract="true" name="DevelopmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxp_RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment" abstract="false" name="RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment" abstract="false" name="RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciationYears" abstract="false" name="RealEstateAndAccumulatedDepreciationLifeUsedForDepreciationYears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxp_RealEstateAggregateAccumulatedDepreciationForTaxPurposes" abstract="false" name="RealEstateAggregateAccumulatedDepreciationForTaxPurposes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_RealEstateImprovementsExcludingFurnitureFixturesAndEquipment" abstract="false" name="RealEstateImprovementsExcludingFurnitureFixturesAndEquipment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_RealEstateCostOfRealEstateSoldExcludingFurnitureFixturesAndEquipment" abstract="false" name="RealEstateCostOfRealEstateSoldExcludingFurnitureFixturesAndEquipment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpenseExcludingFurnitureFixturesAndEquipment" abstract="false" name="SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpenseExcludingFurnitureFixturesAndEquipment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxp_RealEstateAccumulatedDepreciationRealEstateSoldExcludingFurnitureFixturesAndEquipment" abstract="false" name="RealEstateAccumulatedDepreciationRealEstateSoldExcludingFurnitureFixturesAndEquipment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
