"You are an auditor for XBRL filings. \nGiven two concepts and the provided filing (schema, presentation, calculation, definition, label, instance, and US GAAP taxonomy),\ndetermine which one of the following erroneous relationship types best describes the relationship between the two concepts:\n\n(1) Reversal  \n    Definition: A relationship is flagged as Reversal when the filer\u2019s extension taxonomy redefines element hierarchy inconsistently with the US GAAP taxonomy. Specifically, this occurs when an element that should be a sibling in the US GAAP taxonomy is instead defined as a child of another element (or vice versa, a child element is incorrectly redefined as a sibling).\n\n(2) Inappropriateness  \n    Definition: A relationship is flagged as Inappropriateness when elements appear under an abstract category where they do not belong, contrary to the US GAAP taxonomy.\n\n(3) CombinationErr  \n    Definition: A relationship is flagged as CombinationErr when an axis in the filer\u2019s extension taxonomy is associated with inappropriate members not permitted by the US GAAP taxonomy.\n\nYou must reference the US GAAP taxonomy to retrieve and check the two concepts across the entire filing.\nOutput only one of the following labels exactly, chosen strictly from:\n[\"Reversal\", \"Inappropriateness\", \"CombinationErr\"].\n\nNo explanations. No extra text. Only the label.\n\n    \n##Schema document\nNone\n\n##Presentation linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://www.bxp.com/role/RealEstateNarrativeDetails\" xlink:type=\"simple\" xlink:href=\"bxp-20231231.xsd#RealEstateNarrativeDetails\"/>\n  <link:presentationLink xlink:role=\"http://www.bxp.com/role/RealEstateNarrativeDetails\" xlink:type=\"extended\">\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RealEstateAbstract_55c95155-207e-4231-978a-3cb236ecf105\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealEstateAbstract\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRealEstatePropertiesTable\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstateAbstract_55c95155-207e-4231-978a-3cb236ecf105\" xlink:to=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_76117800-3cfe-439f-aed9-9b4856323a2f\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:to=\"loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_76117800-3cfe-439f-aed9-9b4856323a2f\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_76117800-3cfe-439f-aed9-9b4856323a2f\" xlink:to=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_SantaMonicaBusinessParkMember_1889854d-ae84-44e7-bc7d-4aa09f33945e\" xlink:href=\"bxp-20231231.xsd#bxp_SantaMonicaBusinessParkMember\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:to=\"loc_bxp_SantaMonicaBusinessParkMember_1889854d-ae84-44e7-bc7d-4aa09f33945e\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_TwoNineZeroBinneyMember_0c8693bd-43b1-4345-acc1-5cc20c20bec8\" xlink:href=\"bxp-20231231.xsd#bxp_TwoNineZeroBinneyMember\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:to=\"loc_bxp_TwoNineZeroBinneyMember_0c8693bd-43b1-4345-acc1-5cc20c20bec8\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ThreeZeroZeroBinneyStreetMember_dea57302-a7c5-4462-8442-938a1458bb6a\" xlink:href=\"bxp-20231231.xsd#bxp_ThreeZeroZeroBinneyStreetMember\"/>\n    <link:presentationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:to=\"loc_bxp_ThreeZeroZeroBinneyStreetMember_dea57302-a7c5-4462-8442-938a1458bb6a\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_TwoOneZeroZeroPennsylvaniaAvenueMember_af1ebbfc-10f2-4462-9fc9-42382249202c\" xlink:href=\"bxp-20231231.xsd#bxp_TwoOneZeroZeroPennsylvaniaAvenueMember\"/>\n    <link:presentationArc order=\"4\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:to=\"loc_bxp_TwoOneZeroZeroPennsylvaniaAvenueMember_af1ebbfc-10f2-4462-9fc9-42382249202c\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ViewBostonMember_506b672f-6b72-4c19-b27e-ee9f9d4f3228\" xlink:href=\"bxp-20231231.xsd#bxp_ViewBostonMember\"/>\n    <link:presentationArc order=\"5\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:to=\"loc_bxp_ViewBostonMember_506b672f-6b72-4c19-b27e-ee9f9d4f3228\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_OneFourZeroKendrickStreetBuildingAMember_ed3d2b41-f992-4723-8579-e2a69465d48e\" xlink:href=\"bxp-20231231.xsd#bxp_OneFourZeroKendrickStreetBuildingAMember\"/>\n    <link:presentationArc order=\"6\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:to=\"loc_bxp_OneFourZeroKendrickStreetBuildingAMember_ed3d2b41-f992-4723-8579-e2a69465d48e\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_OneEightZeroCityPointMember_42b4404c-7725-4721-8944-aee2ab7a312a\" xlink:href=\"bxp-20231231.xsd#bxp_OneEightZeroCityPointMember\"/>\n    <link:presentationArc order=\"7\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:to=\"loc_bxp_OneEightZeroCityPointMember_42b4404c-7725-4721-8944-aee2ab7a312a\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_OneZeroThreeCityPointMember_c2712acc-b93d-4f0f-9a34-30aad6365207\" xlink:href=\"bxp-20231231.xsd#bxp_OneZeroThreeCityPointMember\"/>\n    <link:presentationArc order=\"8\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:to=\"loc_bxp_OneZeroThreeCityPointMember_c2712acc-b93d-4f0f-9a34-30aad6365207\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_OneZeroFiveCarnegieCenterMember_4e60dc0c-a844-4072-840f-babf945b2fe6\" xlink:href=\"bxp-20231231.xsd#bxp_OneZeroFiveCarnegieCenterMember\"/>\n    <link:presentationArc order=\"9\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:to=\"loc_bxp_OneZeroFiveCarnegieCenterMember_4e60dc0c-a844-4072-840f-babf945b2fe6\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f7f60350-63c1-4b25-8ccf-d63e44d22a4a\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:to=\"loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f7f60350-63c1-4b25-8ccf-d63e44d22a4a\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0e52ecdd-733e-4d0c-9c72-36fab0df4ca1\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f7f60350-63c1-4b25-8ccf-d63e44d22a4a\" xlink:to=\"loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0e52ecdd-733e-4d0c-9c72-36fab0df4ca1\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ConstructionInProgressMember_cde67b25-b669-4572-a29f-ac8d66b4f8ca\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConstructionInProgressMember\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0e52ecdd-733e-4d0c-9c72-36fab0df4ca1\" xlink:to=\"loc_us-gaap_ConstructionInProgressMember_cde67b25-b669-4572-a29f-ac8d66b4f8ca\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_FutureConstructionMember_097e9cd9-54db-4133-afe3-40945cad3ed0\" xlink:href=\"bxp-20231231.xsd#bxp_FutureConstructionMember\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0e52ecdd-733e-4d0c-9c72-36fab0df4ca1\" xlink:to=\"loc_bxp_FutureConstructionMember_097e9cd9-54db-4133-afe3-40945cad3ed0\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_OwnershipAxis_de36ca26-9f73-466e-99f9-8316975974fe\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_OwnershipAxis\"/>\n    <link:presentationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:to=\"loc_srt_OwnershipAxis_de36ca26-9f73-466e-99f9-8316975974fe\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_OwnershipDomain_c9f3e708-114d-47ac-8e09-b12aed3c78d4\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_OwnershipDomain\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_OwnershipAxis_de36ca26-9f73-466e-99f9-8316975974fe\" xlink:to=\"loc_srt_OwnershipDomain_c9f3e708-114d-47ac-8e09-b12aed3c78d4\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_JointVenturePartnerMember_e6b2080a-5ba9-4b89-947c-ff3a5452df60\" xlink:href=\"bxp-20231231.xsd#bxp_JointVenturePartnerMember\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_OwnershipDomain_c9f3e708-114d-47ac-8e09-b12aed3c78d4\" xlink:to=\"loc_bxp_JointVenturePartnerMember_e6b2080a-5ba9-4b89-947c-ff3a5452df60\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_CompanysShareMember_55cbce27-8592-4654-9aa3-f6c042d64778\" xlink:href=\"bxp-20231231.xsd#bxp_CompanysShareMember\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_OwnershipDomain_c9f3e708-114d-47ac-8e09-b12aed3c78d4\" xlink:to=\"loc_bxp_CompanysShareMember_55cbce27-8592-4654-9aa3-f6c042d64778\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NoncontrollingInterestMember_4f71fbcd-dc9d-42f2-a4a3-346106c02be0\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NoncontrollingInterestMember\"/>\n    <link:presentationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_OwnershipDomain_c9f3e708-114d-47ac-8e09-b12aed3c78d4\" xlink:to=\"loc_us-gaap_NoncontrollingInterestMember_4f71fbcd-dc9d-42f2-a4a3-346106c02be0\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_LongtermDebtTypeAxis_3402a181-ffa7-442f-b66d-b55de657c6dc\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis\"/>\n    <link:presentationArc order=\"4\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:to=\"loc_us-gaap_LongtermDebtTypeAxis_3402a181-ffa7-442f-b66d-b55de657c6dc\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_LongtermDebtTypeDomain_624d9b41-54ec-43b0-8e9f-34df37ff3855\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_LongtermDebtTypeAxis_3402a181-ffa7-442f-b66d-b55de657c6dc\" xlink:to=\"loc_us-gaap_LongtermDebtTypeDomain_624d9b41-54ec-43b0-8e9f-34df37ff3855\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_MortgagesMember_f157b45f-69b6-411a-b7d1-1fa100b2be26\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MortgagesMember\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_LongtermDebtTypeDomain_624d9b41-54ec-43b0-8e9f-34df37ff3855\" xlink:to=\"loc_us-gaap_MortgagesMember_f157b45f-69b6-411a-b7d1-1fa100b2be26\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4e928f4e-820d-4a9b-a493-81440a304ef5\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis\"/>\n    <link:presentationArc order=\"5\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:to=\"loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4e928f4e-820d-4a9b-a493-81440a304ef5\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_EquityMethodInvesteeNameDomain_2c0404e4-a3df-4327-a8d9-6da128b8e21d\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_EquityMethodInvesteeNameDomain\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4e928f4e-820d-4a9b-a493-81440a304ef5\" xlink:to=\"loc_srt_EquityMethodInvesteeNameDomain_2c0404e4-a3df-4327-a8d9-6da128b8e21d\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_SantaMonicaBusinessParkMember_5db75ab4-050a-4ab7-90fd-9cc3a793238c\" xlink:href=\"bxp-20231231.xsd#bxp_SantaMonicaBusinessParkMember\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_srt_EquityMethodInvesteeNameDomain_2c0404e4-a3df-4327-a8d9-6da128b8e21d\" xlink:to=\"loc_bxp_SantaMonicaBusinessParkMember_5db75ab4-050a-4ab7-90fd-9cc3a793238c\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealEstatePropertiesLineItems\"/>\n    <link:presentationArc order=\"6\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:to=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_eaf09f0a-88f1-44d5-94c1-5c1297499523\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_eaf09f0a-88f1-44d5-94c1-5c1297499523\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_LandSubjectToGroundLeases_e75eddfd-5d4f-4db5-98f2-be0d8257eb1d\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LandSubjectToGroundLeases\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_LandSubjectToGroundLeases_e75eddfd-5d4f-4db5-98f2-be0d8257eb1d\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NetRentableArea_e39add18-dc38-404d-a2ae-8a696c22b80b\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetRentableArea\"/>\n    <link:presentationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_NetRentableArea_e39add18-dc38-404d-a2ae-8a696c22b80b\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NumberOfRealEstateProperties_734aed33-6210-4c95-b28c-7a7e23afca9e\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NumberOfRealEstateProperties\"/>\n    <link:presentationArc order=\"4\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_NumberOfRealEstateProperties_734aed33-6210-4c95-b28c-7a7e23afca9e\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_LesseeFinanceLeaseRemainingLeaseTerm_58bd8c88-3218-4ea7-858a-abdd2d64fa73\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeFinanceLeaseRemainingLeaseTerm\"/>\n    <link:presentationArc order=\"5\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_LesseeFinanceLeaseRemainingLeaseTerm_58bd8c88-3218-4ea7-858a-abdd2d64fa73\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DebtInstrumentCarryingAmount_6f7cbf77-0e8d-4a92-baa7-47c9cf5fbedc\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentCarryingAmount\"/>\n    <link:presentationArc order=\"6\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_DebtInstrumentCarryingAmount_6f7cbf77-0e8d-4a92-baa7-47c9cf5fbedc\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_PaymentsToAcquireInvestments_87933c53-b156-4725-9664-7f068d95a959\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquireInvestments\"/>\n    <link:presentationArc order=\"7\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_PaymentsToAcquireInvestments_87933c53-b156-4725-9664-7f068d95a959\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CashAcquiredFromAcquisition_b29a2f65-596d-4815-b352-e536c67b0876\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAcquiredFromAcquisition\"/>\n    <link:presentationArc order=\"8\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_CashAcquiredFromAcquisition_b29a2f65-596d-4815-b352-e536c67b0876\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RealEstateInvestmentsJointVentures_3e9eca32-f9a9-48de-bcc2-b654726a97b3\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealEstateInvestmentsJointVentures\"/>\n    <link:presentationArc order=\"9\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_RealEstateInvestmentsJointVentures_3e9eca32-f9a9-48de-bcc2-b654726a97b3\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_e150dbd1-79bf-47cf-ad21-be75856453b1\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal\"/>\n    <link:presentationArc order=\"10\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_e150dbd1-79bf-47cf-ad21-be75856453b1\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_Revenues_b27351a1-e78b-4784-ba0c-50806ff58394\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues\"/>\n    <link:presentationArc order=\"11\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_Revenues_b27351a1-e78b-4784-ba0c-50806ff58394\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NetIncomeLoss_f24341eb-d847-408a-abe5-1e1675a74c57\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss\"/>\n    <link:presentationArc order=\"12\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_NetIncomeLoss_f24341eb-d847-408a-abe5-1e1675a74c57\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_Leasedpercentage_fba6511c-12d1-4818-b57d-dc06b24dc0a2\" xlink:href=\"bxp-20231231.xsd#bxp_Leasedpercentage\"/>\n    <link:presentationArc order=\"13\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_bxp_Leasedpercentage_fba6511c-12d1-4818-b57d-dc06b24dc0a2\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DepreciationAndAmortization_416e26e6-b478-4f6c-95b5-3e70d061bdf4\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DepreciationAndAmortization\"/>\n    <link:presentationArc order=\"14\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_DepreciationAndAmortization_416e26e6-b478-4f6c-95b5-3e70d061bdf4\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/verboseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_7f6e86cf-d7a0-4cf9-b359-bd5d665b3f27\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners\"/>\n    <link:presentationArc order=\"15\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_7f6e86cf-d7a0-4cf9-b359-bd5d665b3f27\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_LandSubjectToGroundLeasePercentageOfRentableSquareFeet_3d9fb194-fb78-4bdc-b78e-3221d18a6f45\" xlink:href=\"bxp-20231231.xsd#bxp_LandSubjectToGroundLeasePercentageOfRentableSquareFeet\"/>\n    <link:presentationArc order=\"16\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_bxp_LandSubjectToGroundLeasePercentageOfRentableSquareFeet_3d9fb194-fb78-4bdc-b78e-3221d18a6f45\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_f9ec86cb-5a88-4196-a1b3-ed98270d9374\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures\"/>\n    <link:presentationArc order=\"17\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_f9ec86cb-5a88-4196-a1b3-ed98270d9374\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n  </link:presentationLink>\n  </link:linkbase>\n\n\n##Calculation linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"/>\n\n\n##Definition linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xbrldt=\"http://xbrl.org/2005/xbrldt\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/all\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#all\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/hypercube-dimension\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/dimension-default\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/dimension-domain\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member\"/>\n  <link:roleRef roleURI=\"http://www.bxp.com/role/RealEstateNarrativeDetails\" xlink:type=\"simple\" xlink:href=\"bxp-20231231.xsd#RealEstateNarrativeDetails\"/>\n  <link:definitionLink xlink:role=\"http://www.bxp.com/role/RealEstateNarrativeDetails\" xlink:type=\"extended\">\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealEstatePropertiesLineItems\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRealEstatePropertiesTable\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/all\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:type=\"arc\" order=\"1\" xbrldt:closed=\"true\" xbrldt:contextElement=\"segment\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_76117800-3cfe-439f-aed9-9b4856323a2f\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/hypercube-dimension\" xlink:from=\"loc_us-gaap_ScheduleOfRealEstatePropertiesTable_250f8a68-9fca-446a-abb6-e245128f551d\" xlink:to=\"loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_76117800-3cfe-439f-aed9-9b4856323a2f\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_76117800-3cfe-439f-aed9-9b4856323a2f_default\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/dimension-default\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_76117800-3cfe-439f-aed9-9b4856323a2f\" xlink:to=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_76117800-3cfe-439f-aed9-9b4856323a2f_default\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/dimension-domain\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_76117800-3cfe-439f-aed9-9b4856323a2f\" xlink:to=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_SantaMonicaBusinessParkMember_1889854d-ae84-44e7-bc7d-4aa09f33945e\" xlink:href=\"bxp-20231231.xsd#bxp_SantaMonicaBusinessParkMember\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_51a8f304-1e16-434e-a88a-8e04b59f64fe\" xlink:to=\"loc_bxp_SantaMonicaBusinessParkMember_1889854d-ae84-44e7-bc7d-4aa09f33945e\" xlink:type=\"arc\" 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xlink:to=\"loc_us-gaap_NumberOfRealEstateProperties_734aed33-6210-4c95-b28c-7a7e23afca9e\" xlink:type=\"arc\" order=\"3\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_LesseeFinanceLeaseRemainingLeaseTerm_58bd8c88-3218-4ea7-858a-abdd2d64fa73\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeFinanceLeaseRemainingLeaseTerm\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_LesseeFinanceLeaseRemainingLeaseTerm_58bd8c88-3218-4ea7-858a-abdd2d64fa73\" xlink:type=\"arc\" order=\"4\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DebtInstrumentCarryingAmount_6f7cbf77-0e8d-4a92-baa7-47c9cf5fbedc\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentCarryingAmount\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_DebtInstrumentCarryingAmount_6f7cbf77-0e8d-4a92-baa7-47c9cf5fbedc\" xlink:type=\"arc\" order=\"5\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_PaymentsToAcquireInvestments_87933c53-b156-4725-9664-7f068d95a959\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquireInvestments\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_PaymentsToAcquireInvestments_87933c53-b156-4725-9664-7f068d95a959\" xlink:type=\"arc\" order=\"6\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CashAcquiredFromAcquisition_b29a2f65-596d-4815-b352-e536c67b0876\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAcquiredFromAcquisition\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_CashAcquiredFromAcquisition_b29a2f65-596d-4815-b352-e536c67b0876\" xlink:type=\"arc\" order=\"7\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RealEstateInvestmentsJointVentures_3e9eca32-f9a9-48de-bcc2-b654726a97b3\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealEstateInvestmentsJointVentures\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_RealEstateInvestmentsJointVentures_3e9eca32-f9a9-48de-bcc2-b654726a97b3\" xlink:type=\"arc\" order=\"8\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_e150dbd1-79bf-47cf-ad21-be75856453b1\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_e150dbd1-79bf-47cf-ad21-be75856453b1\" xlink:type=\"arc\" order=\"9\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_Revenues_b27351a1-e78b-4784-ba0c-50806ff58394\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_Revenues_b27351a1-e78b-4784-ba0c-50806ff58394\" xlink:type=\"arc\" order=\"10\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NetIncomeLoss_f24341eb-d847-408a-abe5-1e1675a74c57\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_NetIncomeLoss_f24341eb-d847-408a-abe5-1e1675a74c57\" xlink:type=\"arc\" order=\"11\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_Leasedpercentage_fba6511c-12d1-4818-b57d-dc06b24dc0a2\" xlink:href=\"bxp-20231231.xsd#bxp_Leasedpercentage\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_bxp_Leasedpercentage_fba6511c-12d1-4818-b57d-dc06b24dc0a2\" xlink:type=\"arc\" order=\"12\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DepreciationAndAmortization_416e26e6-b478-4f6c-95b5-3e70d061bdf4\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DepreciationAndAmortization\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_DepreciationAndAmortization_416e26e6-b478-4f6c-95b5-3e70d061bdf4\" xlink:type=\"arc\" order=\"13\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_7f6e86cf-d7a0-4cf9-b359-bd5d665b3f27\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_7f6e86cf-d7a0-4cf9-b359-bd5d665b3f27\" xlink:type=\"arc\" order=\"14\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_LandSubjectToGroundLeasePercentageOfRentableSquareFeet_3d9fb194-fb78-4bdc-b78e-3221d18a6f45\" xlink:href=\"bxp-20231231.xsd#bxp_LandSubjectToGroundLeasePercentageOfRentableSquareFeet\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_bxp_LandSubjectToGroundLeasePercentageOfRentableSquareFeet_3d9fb194-fb78-4bdc-b78e-3221d18a6f45\" xlink:type=\"arc\" order=\"15\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_f9ec86cb-5a88-4196-a1b3-ed98270d9374\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_RealEstatePropertiesLineItems_fb8af383-4b0f-4ea9-9c48-40430cec53bc\" xlink:to=\"loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_f9ec86cb-5a88-4196-a1b3-ed98270d9374\" xlink:type=\"arc\" order=\"16\"/>\n  </link:definitionLink>\n  </link:linkbase>\n\n\n##Label linkbase document\n<?xml version='1.0' encoding='UTF-8'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedPeriodStartLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/netLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedNetLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedPeriodEndLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedTotalLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel\"/>\n  <link:labelLink xlink:role=\"http://www.xbrl.org/2003/role/link\" xlink:type=\"extended\"><link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember\" xlink:href=\"bxp-20231231.xsd#bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember\" xlink:to=\"lab_bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember_6a3838b3-38f0-477d-90a7-eefce3b1050b_terseLabel_en-US\" xlink:label=\"lab_bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">3.350% unsecured senior notes</link:label>\n    <link:label id=\"lab_bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember_label_en-US\" xlink:label=\"lab_bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Three point three five zero percent unsecured senior notes [Member]</link:label>\n    <link:label id=\"lab_bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember_documentation_en-US\" xlink:label=\"lab_bxp_ThreePointThreeFiveZeroPercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">3.350% unsecured senior notes</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember\" xlink:href=\"bxp-20231231.xsd#bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember\" xlink:to=\"lab_bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember_3a5d4440-0a6a-403e-99ef-4654dcdaa6ff_terseLabel_en-US\" xlink:label=\"lab_bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">3.495% unsecured senior notes</link:label>\n    <link:label id=\"lab_bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember_label_en-US\" xlink:label=\"lab_bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Three point four nine five percent unsecured senior notes [Member]</link:label>\n    <link:label id=\"lab_bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember_documentation_en-US\" xlink:label=\"lab_bxp_ThreePointFourNineFivePercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">3.495% unsecured senior notes</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_OneTwoSixFiveMainOfficeJVLLCMember\" xlink:href=\"bxp-20231231.xsd#bxp_OneTwoSixFiveMainOfficeJVLLCMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_OneTwoSixFiveMainOfficeJVLLCMember\" xlink:to=\"lab_bxp_OneTwoSixFiveMainOfficeJVLLCMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_OneTwoSixFiveMainOfficeJVLLCMember_c159650a-70e3-4e3f-b0e6-ea5476cf7449_terseLabel_en-US\" xlink:label=\"lab_bxp_OneTwoSixFiveMainOfficeJVLLCMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">1265 Main Office JV LLC [Member]</link:label>\n    <link:label id=\"lab_bxp_OneTwoSixFiveMainOfficeJVLLCMember_label_en-US\" xlink:label=\"lab_bxp_OneTwoSixFiveMainOfficeJVLLCMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">One Two Six Five Main Office JV LLC [Member]</link:label>\n    <link:label id=\"lab_bxp_OneTwoSixFiveMainOfficeJVLLCMember_documentation_en-US\" xlink:label=\"lab_bxp_OneTwoSixFiveMainOfficeJVLLCMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">1265 Main Office JV LLC [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_PlatformSixteenThreeSixZeroParkAvenueSouthTwoZeroZeroFifthAvenueAndSafecoPlazaMember\" xlink:href=\"bxp-20231231.xsd#bxp_PlatformSixteenThreeSixZeroParkAvenueSouthTwoZeroZeroFifthAvenueAndSafecoPlazaMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_PlatformSixteenThreeSixZeroParkAvenueSouthTwoZeroZeroFifthAvenueAndSafecoPlazaMember\" xlink:to=\"lab_bxp_PlatformSixteenThreeSixZeroParkAvenueSouthTwoZeroZeroFifthAvenueAndSafecoPlazaMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_PlatformSixteenThreeSixZeroParkAvenueSouthTwoZeroZeroFifthAvenueAndSafecoPlazaMember_d2fb9d32-9fdf-466c-8571-a3070e4c0bd2_terseLabel_en-US\" xlink:label=\"lab_bxp_PlatformSixteenThreeSixZeroParkAvenueSouthTwoZeroZeroFifthAvenueAndSafecoPlazaMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Platform Sixteen, Three Six Zero Park Avenue South, Two Zero Zero Fifth Avenue and Safeco Plaza</link:label>\n    <link:label id=\"lab_bxp_PlatformSixteenThreeSixZeroParkAvenueSouthTwoZeroZeroFifthAvenueAndSafecoPlazaMember_label_en-US\" xlink:label=\"lab_bxp_PlatformSixteenThreeSixZeroParkAvenueSouthTwoZeroZeroFifthAvenueAndSafecoPlazaMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Platform Sixteen, Three Six Zero Park Avenue South, Two Zero Zero Fifth Avenue and Safeco Plaza [Member]</link:label>\n    <link:label id=\"lab_bxp_PlatformSixteenThreeSixZeroParkAvenueSouthTwoZeroZeroFifthAvenueAndSafecoPlazaMember_documentation_en-US\" xlink:label=\"lab_bxp_PlatformSixteenThreeSixZeroParkAvenueSouthTwoZeroZeroFifthAvenueAndSafecoPlazaMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Platform Sixteen, Three Six Zero Park Avenue South, Two Zero Zero Fifth Avenue and Safeco Plaza</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_CompanysShareMember\" xlink:href=\"bxp-20231231.xsd#bxp_CompanysShareMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_CompanysShareMember\" xlink:to=\"lab_bxp_CompanysShareMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_CompanysShareMember_6e365ec3-9927-41eb-9f51-c487ebbee5e6_terseLabel_en-US\" xlink:label=\"lab_bxp_CompanysShareMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Company's Share [Member]</link:label>\n    <link:label id=\"lab_bxp_CompanysShareMember_label_en-US\" xlink:label=\"lab_bxp_CompanysShareMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Company's Share [Member]</link:label>\n    <link:label id=\"lab_bxp_CompanysShareMember_documentation_en-US\" xlink:label=\"lab_bxp_CompanysShareMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Company's Share [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_OwnershipDomain\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_OwnershipDomain\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_srt_OwnershipDomain\" xlink:to=\"lab_srt_OwnershipDomain\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_srt_OwnershipDomain_b26761e1-50ce-42a5-bf66-8b2c4731bdc5_terseLabel_en-US\" xlink:label=\"lab_srt_OwnershipDomain\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Ownership [Domain]</link:label>\n    <link:label id=\"lab_srt_OwnershipDomain_label_en-US\" xlink:label=\"lab_srt_OwnershipDomain\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Ownership [Domain]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_HubOnCausewayPodiumMember\" xlink:href=\"bxp-20231231.xsd#bxp_HubOnCausewayPodiumMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_HubOnCausewayPodiumMember\" xlink:to=\"lab_bxp_HubOnCausewayPodiumMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_HubOnCausewayPodiumMember_103c3c05-3a9b-4768-a390-a5c6a4f013fa_terseLabel_en-US\" xlink:label=\"lab_bxp_HubOnCausewayPodiumMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Hub on Causeway - Podium</link:label>\n    <link:label id=\"lab_bxp_HubOnCausewayPodiumMember_label_en-US\" xlink:label=\"lab_bxp_HubOnCausewayPodiumMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Hub on Causeway - Podium [Member]</link:label>\n    <link:label id=\"lab_bxp_HubOnCausewayPodiumMember_documentation_en-US\" xlink:label=\"lab_bxp_HubOnCausewayPodiumMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Hub on Causeway - Podium</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ThreePointTwoSevenNinePercentUnsecuredSeniorNotesMember\" xlink:href=\"bxp-20231231.xsd#bxp_ThreePointTwoSevenNinePercentUnsecuredSeniorNotesMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_ThreePointTwoSevenNinePercentUnsecuredSeniorNotesMember\" xlink:to=\"lab_bxp_ThreePointTwoSevenNinePercentUnsecuredSeniorNotesMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_ThreePointTwoSevenNinePercentUnsecuredSeniorNotesMember_87e476fc-820d-47f2-8e60-db33632ba71d_terseLabel_en-US\" xlink:label=\"lab_bxp_ThreePointTwoSevenNinePercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">3.279% unsecured senior notes</link:label>\n    <link:label id=\"lab_bxp_ThreePointTwoSevenNinePercentUnsecuredSeniorNotesMember_label_en-US\" xlink:label=\"lab_bxp_ThreePointTwoSevenNinePercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Three point two seven nine percent unsecured senior notes [Member]</link:label>\n    <link:label id=\"lab_bxp_ThreePointTwoSevenNinePercentUnsecuredSeniorNotesMember_documentation_en-US\" xlink:label=\"lab_bxp_ThreePointTwoSevenNinePercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">3.279% unsecured senior notes</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EquityMethodInvestmentOwnershipPercentage\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_EquityMethodInvestmentOwnershipPercentage\" xlink:to=\"lab_us-gaap_EquityMethodInvestmentOwnershipPercentage\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_EquityMethodInvestmentOwnershipPercentage_65406966-f5f6-4ef5-8b74-1b15662bb97f_terseLabel_en-US\" xlink:label=\"lab_us-gaap_EquityMethodInvestmentOwnershipPercentage\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Ownership Percentage</link:label>\n    <link:label id=\"lab_us-gaap_EquityMethodInvestmentOwnershipPercentage_label_en-US\" xlink:label=\"lab_us-gaap_EquityMethodInvestmentOwnershipPercentage\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Equity Method Investment, Ownership Percentage</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_OneEightZeroCityPointMember\" xlink:href=\"bxp-20231231.xsd#bxp_OneEightZeroCityPointMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_OneEightZeroCityPointMember\" xlink:to=\"lab_bxp_OneEightZeroCityPointMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_OneEightZeroCityPointMember_c6ac595f-6763-4d49-8006-e771ed3873e7_terseLabel_en-US\" xlink:label=\"lab_bxp_OneEightZeroCityPointMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">180 CityPoint [Member]</link:label>\n    <link:label id=\"lab_bxp_OneEightZeroCityPointMember_label_en-US\" xlink:label=\"lab_bxp_OneEightZeroCityPointMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">One Eight Zero CityPoint [Member]</link:label>\n    <link:label id=\"lab_bxp_OneEightZeroCityPointMember_documentation_en-US\" xlink:label=\"lab_bxp_OneEightZeroCityPointMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">One Eight Zero CityPoint</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_MaterialReconcilingItemsMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MaterialReconcilingItemsMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_MaterialReconcilingItemsMember\" xlink:to=\"lab_us-gaap_MaterialReconcilingItemsMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_MaterialReconcilingItemsMember_fec0468f-50de-415e-82d2-6d1282e95661_terseLabel_en-US\" xlink:label=\"lab_us-gaap_MaterialReconcilingItemsMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Segment Reconciling Items</link:label>\n    <link:label id=\"lab_us-gaap_MaterialReconcilingItemsMember_label_en-US\" xlink:label=\"lab_us-gaap_MaterialReconcilingItemsMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Segment Reconciling Items [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember\" xlink:href=\"bxp-20231231.xsd#bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember\" xlink:to=\"lab_bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember_a993a534-f637-4837-8ced-ee7a7e94bacf_terseLabel_en-US\" xlink:label=\"lab_bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">3.766% unsecured senior notes</link:label>\n    <link:label id=\"lab_bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember_label_en-US\" xlink:label=\"lab_bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Three point seven six six percent unsecured senior notes [Member]</link:label>\n    <link:label id=\"lab_bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember_documentation_en-US\" xlink:label=\"lab_bxp_ThreePointSevenSixSixPercentUnsecuredSeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">3.766% unsecured senior notes</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember\" xlink:href=\"bxp-20231231.xsd#bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember\" xlink:to=\"lab_bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember_21207a44-69e2-4bc0-a9f5-acec64e3b451_terseLabel_en-US\" xlink:label=\"lab_bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">325 Main Street, 355 Main Street, 90 Broadway and Kendall Center Green Garage Properties [Member]</link:label>\n    <link:label id=\"lab_bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember_label_en-US\" xlink:label=\"lab_bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Three Two Five Main Street, Three Five Five Main Street, Ninety Broadway and Kendall Center Green Garage Properties [Member]</link:label>\n    <link:label id=\"lab_bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember_documentation_en-US\" xlink:label=\"lab_bxp_ThreeTwoFiveMainStreetThreeFiveFiveMainStreetNinetyBroadwayAndKendallCenterGreenGaragePropertiesMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Three Two Five Main Street, Three Five Five Main Street, Ninety Broadway and Kendall Center Green Garage Properties</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CommercialRealEstateMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommercialRealEstateMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_CommercialRealEstateMember\" xlink:to=\"lab_us-gaap_CommercialRealEstateMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_CommercialRealEstateMember_48b23dc0-6ede-4d9a-a01d-11debe41e578_terseLabel_en-US\" xlink:label=\"lab_us-gaap_CommercialRealEstateMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Commercial Real Estate Properties [Member]</link:label>\n    <link:label id=\"lab_us-gaap_CommercialRealEstateMember_label_en-US\" xlink:label=\"lab_us-gaap_CommercialRealEstateMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Commercial Real Estate [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_UnconsolidatedPropertiesMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnconsolidatedPropertiesMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_UnconsolidatedPropertiesMember\" xlink:to=\"lab_us-gaap_UnconsolidatedPropertiesMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_UnconsolidatedPropertiesMember_29be9362-3613-428a-914c-0f4e3215ecf0_terseLabel_en-US\" xlink:label=\"lab_us-gaap_UnconsolidatedPropertiesMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Unconsolidated Properties</link:label>\n    <link:label id=\"lab_us-gaap_UnconsolidatedPropertiesMember_label_en-US\" xlink:label=\"lab_us-gaap_UnconsolidatedPropertiesMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Unconsolidated Properties [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_TwoZeroZeroFifthAvenueMember\" xlink:href=\"bxp-20231231.xsd#bxp_TwoZeroZeroFifthAvenueMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_TwoZeroZeroFifthAvenueMember\" xlink:to=\"lab_bxp_TwoZeroZeroFifthAvenueMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_TwoZeroZeroFifthAvenueMember_6e8d68ea-e5b0-44dc-8333-bf1bda7a0672_terseLabel_en-US\" xlink:label=\"lab_bxp_TwoZeroZeroFifthAvenueMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">200 Fifth Avenue</link:label>\n    <link:label id=\"lab_bxp_TwoZeroZeroFifthAvenueMember_label_en-US\" xlink:label=\"lab_bxp_TwoZeroZeroFifthAvenueMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Two Zero Zero Fifth Avenue [Member]</link:label>\n    <link:label id=\"lab_bxp_TwoZeroZeroFifthAvenueMember_documentation_en-US\" xlink:label=\"lab_bxp_TwoZeroZeroFifthAvenueMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Two Zero Zero Fifth Avenue</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SeniorNotesMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SeniorNotesMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_SeniorNotesMember\" xlink:to=\"lab_us-gaap_SeniorNotesMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_SeniorNotesMember_e080e4a6-f23d-426c-a159-23529fa0f71d_terseLabel_en-US\" xlink:label=\"lab_us-gaap_SeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Senior Notes</link:label>\n    <link:label id=\"lab_us-gaap_SeniorNotesMember_label_en-US\" xlink:label=\"lab_us-gaap_SeniorNotesMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Senior Notes [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SubsequentEventMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_SubsequentEventMember\" xlink:to=\"lab_us-gaap_SubsequentEventMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_SubsequentEventMember_ea0d39c0-d859-4149-8616-c67b9acfb554_terseLabel_en-US\" xlink:label=\"lab_us-gaap_SubsequentEventMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Subsequent Event [Member]</link:label>\n    <link:label id=\"lab_us-gaap_SubsequentEventMember_label_en-US\" xlink:label=\"lab_us-gaap_SubsequentEventMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Subsequent Event [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ConsolidatedEntitiesMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConsolidatedEntitiesMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ConsolidatedEntitiesMember\" xlink:to=\"lab_us-gaap_ConsolidatedEntitiesMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ConsolidatedEntitiesMember_4b68cb58-ac86-488f-ac02-298b3dbb1367_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ConsolidatedEntitiesMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Consolidated Entities</link:label>\n    <link:label id=\"lab_us-gaap_ConsolidatedEntitiesMember_label_en-US\" xlink:label=\"lab_us-gaap_ConsolidatedEntitiesMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Consolidated Entities [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_MetropolitanSquareMember\" xlink:href=\"bxp-20231231.xsd#bxp_MetropolitanSquareMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_MetropolitanSquareMember\" xlink:to=\"lab_bxp_MetropolitanSquareMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_MetropolitanSquareMember_8d4c4981-8eca-4c60-a89a-2fe3a100d648_terseLabel_en-US\" xlink:label=\"lab_bxp_MetropolitanSquareMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Metropolitan Square</link:label>\n    <link:label id=\"lab_bxp_MetropolitanSquareMember_label_en-US\" xlink:label=\"lab_bxp_MetropolitanSquareMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Metropolitan Square [Member]</link:label>\n    <link:label id=\"lab_bxp_MetropolitanSquareMember_documentation_en-US\" xlink:label=\"lab_bxp_MetropolitanSquareMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Metropolitan Square</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_TwoZeroZeroFifthAvenueJVLLCMember\" xlink:href=\"bxp-20231231.xsd#bxp_TwoZeroZeroFifthAvenueJVLLCMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_TwoZeroZeroFifthAvenueJVLLCMember\" xlink:to=\"lab_bxp_TwoZeroZeroFifthAvenueJVLLCMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_TwoZeroZeroFifthAvenueJVLLCMember_62e3f6b0-e303-45f9-8c79-82b02b057de9_terseLabel_en-US\" xlink:label=\"lab_bxp_TwoZeroZeroFifthAvenueJVLLCMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">200 Fifth Avenue JV LLC</link:label>\n    <link:label id=\"lab_bxp_TwoZeroZeroFifthAvenueJVLLCMember_label_en-US\" xlink:label=\"lab_bxp_TwoZeroZeroFifthAvenueJVLLCMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Two Zero Zero Fifth Avenue JV LLC [Member]</link:label>\n    <link:label id=\"lab_bxp_TwoZeroZeroFifthAvenueJVLLCMember_documentation_en-US\" xlink:label=\"lab_bxp_TwoZeroZeroFifthAvenueJVLLCMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Two Zero Zero Fifth Avenue JV LLC</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_FivezerooneKStreetLLCMember\" xlink:href=\"bxp-20231231.xsd#bxp_FivezerooneKStreetLLCMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_FivezerooneKStreetLLCMember\" xlink:to=\"lab_bxp_FivezerooneKStreetLLCMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_FivezerooneKStreetLLCMember_b0aad185-e39a-48ef-9d52-8a9a0b1bbd4e_terseLabel_en-US\" xlink:label=\"lab_bxp_FivezerooneKStreetLLCMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">501 K Street LLC [Member]</link:label>\n    <link:label id=\"lab_bxp_FivezerooneKStreetLLCMember_label_en-US\" xlink:label=\"lab_bxp_FivezerooneKStreetLLCMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">five zero one K Street LLC [Member]</link:label>\n    <link:label id=\"lab_bxp_FivezerooneKStreetLLCMember_documentation_en-US\" xlink:label=\"lab_bxp_FivezerooneKStreetLLCMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">501 K Street LLC [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_RetailSiteMember\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RetailSiteMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_srt_RetailSiteMember\" xlink:to=\"lab_srt_RetailSiteMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_srt_RetailSiteMember_deb04430-c5f0-4535-8f37-0b745973b393_terseLabel_en-US\" xlink:label=\"lab_srt_RetailSiteMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Retail Site [Member]</link:label>\n    <link:label id=\"lab_srt_RetailSiteMember_label_en-US\" xlink:label=\"lab_srt_RetailSiteMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Retail Site [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember\" xlink:href=\"bxp-20231231.xsd#bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember\" xlink:to=\"lab_bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember_9df184d3-a85a-4bb4-9e4f-2e652760884a_terseLabel_en-US\" xlink:label=\"lab_bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">360 PAS Holdco LLC (indirect ownership)</link:label>\n    <link:label id=\"lab_bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember_label_en-US\" xlink:label=\"lab_bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Three Six Zero PAS Holdco LLC (indirect ownership) [Member]</link:label>\n    <link:label id=\"lab_bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember_documentation_en-US\" xlink:label=\"lab_bxp_ThreeSixZeroPASHoldcoLLCIndirectOwnershipMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Three Six Zero PAS Holdco LLC (indirect ownership)</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ScenarioPlanMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScenarioPlanMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ScenarioPlanMember\" xlink:to=\"lab_us-gaap_ScenarioPlanMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ScenarioPlanMember_2c47629f-97cc-42b3-8e08-4737fb26887e_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ScenarioPlanMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Scenario, Plan</link:label>\n    <link:label id=\"lab_us-gaap_ScenarioPlanMember_label_en-US\" xlink:label=\"lab_us-gaap_ScenarioPlanMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Scenario, Plan [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_OwnershipAxis\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_OwnershipAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_srt_OwnershipAxis\" xlink:to=\"lab_srt_OwnershipAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_srt_OwnershipAxis_db63173c-5c71-4d23-90b2-1a09bbfc00e0_terseLabel_en-US\" xlink:label=\"lab_srt_OwnershipAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Ownership [Axis]</link:label>\n    <link:label id=\"lab_srt_OwnershipAxis_label_en-US\" xlink:label=\"lab_srt_OwnershipAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Ownership [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_StatementScenarioAxis\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementScenarioAxis\"/>\n \n\n##Instance document\n<?xml version='1.0' encoding='UTF-8'?>\n<xbrl xmlns=\"http://www.xbrl.org/2003/instance\" xmlns:bxp=\"http://www.bxp.com/20231231\" xmlns:dei=\"http://xbrl.sec.gov/dei/2023\" xmlns:ecd=\"http://xbrl.sec.gov/ecd/2023\" xmlns:iso4217=\"http://www.xbrl.org/2003/iso4217\" xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:srt=\"http://fasb.org/srt/2023\" xmlns:stpr=\"http://xbrl.sec.gov/stpr/2023\" xmlns:us-gaap=\"http://fasb.org/us-gaap/2023\" xmlns:utr=\"http://www.xbrl.org/2009/utr\" xmlns:xbrldi=\"http://xbrl.org/2006/xbrldi\" xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xml:lang=\"en-US\"><link:schemaRef xlink:href=\"bxp-20231231.xsd\" xlink:type=\"simple\"/>\n\t<context id=\"c-212\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:OwnershipAxis\">bxp:JointVenturePartnerMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"srt:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis\">bxp:SantaMonicaBusinessParkMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2023-12-14</instant>\n        </period>\n    </context>\n\t<context id=\"c-259\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis\">bxp:SquareFourZeroSevenLimitedPartnershipMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2023-12-31</instant>\n        </period>\n    </context>\n\t<context id=\"c-262\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis\">bxp:BPCRFMetropolitanSquareLLCMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2022-12-31</instant>\n        </period>\n    </context>\n\t<context id=\"c-264\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember 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dimension=\"srt:RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\">bxp:NineZeroOneNewYorkAvenueMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:SubsequentEventTypeAxis\">us-gaap:SubsequentEventMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2024-01-08</instant>\n        </period>\n    </context>\n\t<context id=\"c-797\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\">bxp:ThreeHudsonBoulevardMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:RealEstatePropertiesAxis\">us-gaap:UnconsolidatedPropertiesMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:SubsequentEventTypeAxis\">us-gaap:SubsequentEventMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2024-02-06</instant>\n        </period>\n    </context>\n\t<context id=\"c-800\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\">bxp:SevenSevenFiveZeroWisconsinAvenueMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:RealEstatePropertiesAxis\">us-gaap:UnconsolidatedPropertiesMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:SubsequentEventTypeAxis\">us-gaap:SubsequentEventMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2024-02-09</instant>\n        </period>\n    </context>\n\t<context id=\"c-213\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\">bxp:SantaMonicaBusinessParkMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2023-12-14</instant>\n        </period>\n    </context>\n\t<context id=\"c-246\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidatedEntitiesAxis\">us-gaap:ConsolidatedEntitiesMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"srt:RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\">bxp:ThreeFourThreeMadisonAvenueMember</xbrldi:explicitMember>\n            </segment>\n   \n\n##US GAAP Taxonomy\n[Concept Core]\nID: srt:OwnershipAxis\nLabel: Ownership [Axis]\nType: xbrli:stringItemType | Balance: None | PeriodType: duration | Abstract: True\nStatus: None | DeprecatedLabel: None | DeprecatedDate: None\nDocumentation:\nInformation by name of entity in which ownership interest is disclosed. Excludes equity method investee and named security investment.\n\nProvenance: file=GAAP_Taxonomy_2024.xlsx | sheet=Concepts | row=474\n\n\n[Concept Core]\nID: us-gaap:NoncontrollingInterestMember\nLabel: Noncontrolling Interest [Member]\nType: dtr-types:domainItemType | Balance: None | PeriodType: duration | Abstract: True\nStatus: None | DeprecatedLabel: None | DeprecatedDate: None\nDocumentation:\nThis element represents that portion of equity (net assets) in a subsidiary not attributable, directly or indirectly, to the parent. A noncontrolling interest is sometimes called a minority interest.\n\nProvenance: file=GAAP_Taxonomy_2024.xlsx | sheet=Concepts | row=8840\n\n\n[Concept Relations]\nID: srt:OwnershipAxis\n\nPresentation:\n- Role: http://fasb.org/us-gaap/role/statement/CommonDomainMembers\n  Path: Statement [Table] > Ownership [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/statement/CommonDomainMembers\n  Path: Ownership [Axis] > Ownership [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatements\n  Path: Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table] > Ownership [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatements\n  Path: Ownership [Axis] > Ownership [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/MinorityInterest\n  Path: Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table] > Ownership [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/MinorityInterest\n  Path: Ownership [Axis] > Ownership [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/MinorityInterest\n  Path: Noncontrolling Interest [Table] > Ownership [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/MinorityInterest\n  Path: Ownership [Axis] > Ownership [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/MinorityInterest\n  Path: Redeemable Noncontrolling Interest [Table] > Ownership [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/MinorityInterest\n  Path: Ownership [Axis] > Ownership [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/BusinessCombinations\n  Path: Schedule of Business Acquisitions, by Acquisition [Table] > Ownership [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/BusinessCombinations\n  Path: Ownership [Axis] > Ownership [Domain]\n  PreferredLabel: None\nProvenance: sheets include Presentation-like sheets\n\n\n[Concept Relations]\nID: srt:OwnershipAxis\n\nDefinition (Dimensions/Domain/Hypercube):\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:StatementTable -> to=srt:OwnershipAxis (role=http://fasb.org/us-gaap/role/statement/CommonDomainMembersStatementTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/statement/CommonDomainMembersStatementTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/statement/CommonDomainMembersStatementTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetTable -> to=srt:OwnershipAxis (role=http://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementsConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementsConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementsConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetTable -> to=srt:OwnershipAxis (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:MinorityInterestTable -> to=srt:OwnershipAxis (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterest)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterest)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterest)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:RedeemableNoncontrollingInterestByLegalEntityTable -> to=srt:OwnershipAxis (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestRedeemableNoncontrollingInterestByLegalEntityTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestRedeemableNoncontrollingInterestByLegalEntityTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestRedeemableNoncontrollingInterestByLegalEntityTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionTable -> to=srt:OwnershipAxis (role=http://fasb.org/us-gaap/role/disclosure/BusinessCombinationsScheduleOfBusinessAcquisitionsByAcquisitionTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/disclosure/BusinessCombinationsScheduleOfBusinessAcquisitionsByAcquisitionTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:OwnershipAxis -> to=srt:OwnershipDomain (role=http://fasb.org/us-gaap/role/disclosure/BusinessCombinationsScheduleOfBusinessAcquisitionsByAcquisitionTable)\nProvenance: sheets include Definition-like sheets\n\n\n[Concept Relations]\nID: srt:OwnershipAxis\n\nReferences:\n- Taxonomy Implementation Guide | None | None\nProvenance: sheets include Reference-like sheets\n\n\n[Concept Relations]\nID: us-gaap:NoncontrollingInterestMember\n\nPresentation:\n- Role: http://fasb.org/us-gaap/role/statement/StatementOfShareholdersEquityAndOtherComprehensiveIncome\n  Path: Equity Component [Domain] > Noncontrolling Interest [Member]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/statement/StatementOfShareholdersEquityAndOtherComprehensiveIncome\n  Path: Noncontrolling Interest [Member] > AOCI Attributable to Noncontrolling Interest [Member]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance\n  Path: Parent [Member] > Noncontrolling Interest [Member]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/MinorityInterest\n  Path: Equity Component [Domain] > Noncontrolling Interest [Member]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/MinorityInterest\n  Path: Equity Component [Domain] > Noncontrolling Interest [Member]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/Equity\n  Path: Equity Component [Domain] > Noncontrolling Interest [Member]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/Equity\n  Path: Noncontrolling Interest [Member] > AOCI Attributable to Noncontrolling Interest [Member]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/Equity\n  Path: Equity Component [Domain] > Noncontrolling Interest [Member]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/Equity\n  Path: Noncontrolling Interest [Member] > AOCI Attributable to Noncontrolling Interest [Member]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompany\n  Path: Equity Component [Domain] > Noncontrolling Interest [Member]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompany\n  Path: Noncontrolling Interest [Member] > AOCI Attributable to Noncontrolling Interest [Member]\n  PreferredLabel: None\nProvenance: sheets include Presentation-like sheets\n\n\n[Concept Relations]\nID: us-gaap:NoncontrollingInterestMember\n\nDefinition (Dimensions/Domain/Hypercube):\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/statement/StatementOfShareholdersEquityAndOtherComprehensiveIncomeStatementTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:NoncontrollingInterestMember -> to=us-gaap:AociAttributableToNoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/statement/StatementOfShareholdersEquityAndOtherComprehensiveIncomeStatementTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/statement/StatementOfShareholdersEquityAndOtherComprehensiveIncomeStatementTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:NoncontrollingInterestMember -> to=us-gaap:AociAttributableToNoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/statement/StatementOfShareholdersEquityAndOtherComprehensiveIncomeStatementTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:ParentMember -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceNewAccountingPronouncementsOrChangeInAccountingPrincipleTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:ParentMember -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceNewAccountingPronouncementsOrChangeInAccountingPrincipleTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterest)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterest)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyChangesInNetAssetsTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:NoncontrollingInterestMember -> to=us-gaap:AociAttributableToNoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyChangesInNetAssetsTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyChangesInNetAssetsTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:NoncontrollingInterestMember -> to=us-gaap:AociAttributableToNoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyChangesInNetAssetsTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/EquityAccumulatedOtherComprehensiveIncomeLossTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:NoncontrollingInterestMember -> to=us-gaap:AociAttributableToNoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/EquityAccumulatedOtherComprehensiveIncomeLossTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/EquityAccumulatedOtherComprehensiveIncomeLossTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:NoncontrollingInterestMember -> to=us-gaap:AociAttributableToNoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/EquityAccumulatedOtherComprehensiveIncomeLossTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/EquityReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:NoncontrollingInterestMember -> to=us-gaap:AociAttributableToNoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/EquityReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:EquityComponentDomain -> to=us-gaap:NoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/EquityReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable)\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:NoncontrollingInterestMember -> to=us-gaap:AociAttributableToNoncontrollingInterestMember (role=http://fasb.org/us-gaap/role/disclosure/EquityReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable)\nProvenance: sheets include Definition-like sheets\n\n\n[Concept Relations]\nID: us-gaap:NoncontrollingInterestMember\n\nReferences:\n- Disclosure Improvements | None | None\n- BDC:Taxonomy Technical Improvement | None | None\nProvenance: sheets include Reference-like sheets\n\nQuestion: What erroneous relationship type exists between srt:OwnershipAxis and us-gaap:NoncontrollingInterestMember, based on the provided XBRL filing and the US GAAP taxonomy?\nAnswer:\n\n    "

Answer: "CombinationErr"