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| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 1620 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO HOLD REAL ESTATE FOR CHARITABLE ORGANIZATION |
| IRS990/AllOtherContributionsAmt | 0 | 500000 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | MARCI K DAVIS |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 5108363223 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 200 FRANK H OGAWA PLAZA |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | OAKLAND |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 94612 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
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| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 0 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 1 |
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| IRS990/CYContributionsGrantsAmt | 0 | 509800 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
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| IRS990/CYOtherExpensesAmt | 0 | 27066 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 482734 |
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| IRS990/CYTotalExpensesAmt | 0 | 27066 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 509800 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/Desc | 0 | EBCF PROPERTIES IS A 509(A)(3) SUPPORTING ORGANIZATION OF THE EAST BAY COMMUNITY FOUNDATION. ITS SOLE FUNCTION IS TO HOLD REAL ESTATE AND OTHER PROPERTY. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 23766 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 3300 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 3300 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 17907 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 17907 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 3300 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 3300 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 39.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 39.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 39.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 20504 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 27623 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 11466 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | ZACH WASSERMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | JULIE AVARY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | JAMES W HEAD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | EDWARD HARRIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | ALEXANDRA AQUINO-FIKE |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 295183 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 182556 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 150690 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | SECRETARY |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1997 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 5 |
| IRS990/GrantAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossReceiptsAmt | 0 | 509800 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 2 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 500000 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 500000 |
| IRS990/LegalDomicileStateCd | 0 | CA |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | NONE. EBCF PROPERTIES IS A 509(A)(3) SUPPORTING ORGANIZATION OF THE EAST BAY COMMUNITY FOUNDATION. THE UNADOPTED MISSION STATEMENT IS TO HOLD REAL ESTATE AND OTHER PROPERTY. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | -6449 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 476285 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoncashContributionsAmt | 0 | 500000 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 2559 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 2559 |
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| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
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| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 22095 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrincipalOfficerNm | 0 | JAMES W HEAD |
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| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
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| IRS990/PYContributionsGrantsAmt | 0 | 0 |
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| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
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| IRS990/PYOtherExpensesAmt | 0 | 3230 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -3230 |
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| IRS990/PYTotalExpensesAmt | 0 | 3230 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 0 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
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| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 1 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/RelatedOrganizationsAmt | 0 | 9800 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
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| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionControllerInd | 0 | 0 |
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| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnControllIntInd | 0 | 0 |
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| IRS990ScheduleA/Form990SchASupportingOrgGrp/ExcessBusinessHoldingsRulesInd | 0 | 0 |
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| IRS990ScheduleA/Form990SchAType1SuprtOrgGrp/PowerAppointMajorityDirTrstInd | 0 | 1 |
| IRS990ScheduleA/OtherSupportSumAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrganizationsCnt | 0 | 1 |
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| IRS990ScheduleA/SupportedOrgInformationGrp/GoverningDocumentListedInd | 0 | 1 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OrganizationTypeCd | 0 | 7 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OtherSupportAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrganizationName/BusinessNameLine1Txt | 0 | EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleA/SupportingOrganization509a3Ind | 0 | X |
| IRS990ScheduleA/SupportingOrgType1Ind | 0 | X |
| IRS990ScheduleA/SupportSumAmt | 0 | 0 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 500000 |
| IRS990ScheduleD/LandGrp/InvestmentCostOrOtherBasisAmt | 0 | 500000 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 22095 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | INTERFUND PAYABLE |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | THE FOUNDATION AND ITS CONSOLIDATED SUPPORTING ORGANIZATIONS ARE EXEMPT FROM FEDERAL INCOME TAX ON RELATED INCOME UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE, AND CALIFORNIA REVENUE AND TAXATION CODE SECTION 23701D. IN ADDITION, THEY HAVE EACH RECEIVED A DETERMINATION FROM THE IRS THAT THEY ARE NOT PRIVATE FOUNDATIONS. AS OF JUNE 30, 2019 AND 2018, MANAGEMENT EVALUATED THE FOUNDATION AND ITS CONSOLIDATED SUPPORTING ORGANIZATION'S TAX POSITIONS AND CONCLUDED THAT THEY HAD MAINTAINED THEIR TAX EXEMPT STATUS AND HAD TAKEN NO UNCERTAIN TAX POSITIONS THAT REQUIRE ADJUSTMENT TO THE FINANCIAL STATEMENTS. THEREFORE, NO PROVISION OR LIABILITY FOR INCOME TAXES HAS BEEN INCLUDED IN THE FINANCIAL STATEMENTS. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART X, LINE 2: |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 500000 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 22095 |
| IRS990ScheduleJ/AnyNonFixedPaymentsInd | 0 | 0 |
| IRS990ScheduleJ/CompBasedOnRevenueOfFlngOrgInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdNetEarnsFlngOrgInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdNetEarnsRltdOrgsInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdOnRevRelatedOrgsInd | 0 | 0 |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | 0 |
| IRS990ScheduleJ/InitialContractExceptionInd | 0 | 0 |
| IRS990/ScheduleJRequiredInd | 0 | 1 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 1 | 0 |
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| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 0 | 290623 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 1 | 182556 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 2 | 150690 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 0 | 6951 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 1 | 7359 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 2 | 1021 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 0 | 13553 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 1 | 20264 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 2 | 10445 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 0 | 4560 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | JAMES W HEAD |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 1 | EDWARD HARRIS |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 2 | ALEXANDRA AQUINO-FIKE |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | PRESIDENT |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 1 | TREASURER |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 2 | SECRETARY |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationRltdOrgsAmt | 0 | 315687 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationRltdOrgsAmt | 1 | 210179 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationRltdOrgsAmt | 2 | 162156 |
| IRS990ScheduleJ/SeverancePaymentInd | 0 | 0 |
| IRS990ScheduleJ/SupplementalInformationDetail/ExplanationTxt | 0 | EAST BAY COMMUNITY FOUNDATION, RELATED ORGANIZATION OF EBCF PROPERTIES, UTILIZES COMPENSATION COMMITTEE, COMPENSATION SURVEY OR STUDY, AND APPROVAL BY THE BOARD OR COMPENSATION COMMITTEE TO ESTABLISH COMPENSATION OF THE CEO. |
| IRS990ScheduleJ/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART I, LINE 3 |
| IRS990ScheduleJ/SupplementalNonqualRtrPlanInd | 0 | 0 |
| IRS990ScheduleM/AnyPropertyThatMustBeHeldInd | 0 | 0 |
| IRS990ScheduleM/Form8283ReceivedCnt | 0 | 1 |
| IRS990ScheduleM/RealEstateResidentialGrp/ContributionCnt | 0 | 1 |
| IRS990ScheduleM/RealEstateResidentialGrp/MethodOfDeterminingRevenuesTxt | 0 | FMV |
| IRS990ScheduleM/RealEstateResidentialGrp/NonCashCheckboxInd | 0 | X |
| IRS990ScheduleM/RealEstateResidentialGrp/NoncashContributionsRptF990Amt | 0 | 500000 |
| IRS990ScheduleM/ReviewProcessUnusualNCGiftsInd | 0 | 1 |
| IRS990ScheduleM/SupplementalInformationDetail/ExplanationTxt | 0 | THE NUMBER OF CONTRIBUTIONS REFLECTS THE NUMBER OF DONORS, NOT THE NUMBER OF ITEMS DONATED. |
| IRS990ScheduleM/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART I, COLUMN (B): |
| IRS990ScheduleM/ThirdPartiesUsedInd | 0 | 0 |
| IRS990/ScheduleORequiredInd | 0 | 1 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | EBCF PROPERTIES IS A TYPE I SUPPORTING ORGANIZATION OF THE EAST BAY COMMUNITY FOUNDATION (EBCF). EBCF IS A PUBLIC CHARITY DESCRIBED IN INTERNAL REVENUE CODE SECTIONS 501(C)(3) AND 170(B)(1)(A)(VI). THE TYPE I RELATIONSHIP IS MAINTAINED BY VIRTUE OF THE FACT THAT EBCF HAS THE POWER TO APPOINT/REMOVE MEMBERS OF THE GOVERNING BODY OF EBCF PROPERTIES. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE FOUNDATION'S ACCOUNTING FIRM FORWARDED THE FORM 990 TO THE INTERIM CHIEF FINANCIAL OFFICER OF EBCF. THE INTERIM CHIEF FINANCIAL OFFICER REVIEWED THE RETURN AND FORWARDED THE FORM 990 TO THE OTHER BOARD MEMBERS PRIOR TO FILING. IF THE BOARD MEMBERS HAD QUESTIONS, THE INTERIM CHIEF FINANCIAL OFFICER OR THE ACCOUNTING FIRM ADDRESSED THE QUESTIONS BEFORE SUBMITTING THE FORM 990 TO THE IRS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | A CONFLICT OF INTEREST QUESTIONNAIRE IS DISTRIBUTED ANNUALLY TO OFFICERS AND DIRECTORS. EACH PERSON RETURNS THE QUESTIONNAIRE AND CONFIRMS IN WRITING THEIR COI STATUS. EAST BAY COMMUNITY FOUNDATION PROPERTIES REQUIRES ITS DIRECTORS AND OFFICERS TO DISCLOSE ALL INTERESTS THAT THEY OR THEIR FAMILY MEMBERS HAVE IN OTHER FOR-PROFIT OR NONPROFIT ENTITIES, OR INTERESTS THAT MIGHT EXIST AMONG DIRECTORS AND OFFICERS WHERE IT IS FORESEEABLE THAT THE FOUNDATION MAY ENTER INTO A CONTRACT OR AWARD A GRANT OR HAVE OTHER BUSINESS OR FINANCIAL DEALINGS WITH THE ENTITY. THIS SHALL INCLUDE, BUT NOT BE LIMITED TO, FINANCIAL INTERESTS, OFFICER POSITIONS, DIRECTORSHIPS, AND OTHER SIMILAR SUBSTANTIAL INTERESTS IN ANY SUCH ENTITIES. IF A CONFLICT OR POTENTIAL CONFLICT IS IDENTIFIED, THEN THE OFFICER OR BOARD MEMBER WOULD RECUSE THEMSELVES FROM ANY VOTE ON THE MATTER BEFORE THE BOARD OR COMMITTEE. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST FOR THE SAME PERIOD OF TIME SET FORTH IN SEC. 6104(D). |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | TEMP HELP FEES: PROGRAM SERVICE EXPENSES 3,300. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 3,300. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 5 | EBCF PROPERTIES IS INCLUDED IN A CONSOLIDATED AUDIT WITH THE EAST BAY COMMUNITY FOUNDATION (EBCF). THE ORGANIZATION UTILIZES THE EBCF AUDIT AS ITS OWN. THE AUDIT COMMITTEE OF THE EBCF HAS OVERSIGHT OF ALL ENTITIES INCLUDED IN THE CONSOLIDATED AUDIT. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PART VI, SECTION A, LINE 7A |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PART VI, SECTION B, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PART VI, SECTION B, LINE 12C |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PART VI, SECTION C, LINE 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | FORM 990, PART IX, LINE 11G |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 5 | FORM 990, PART XII, LINE 2C: |
| IRS990ScheduleR/AssetExchangeInd | 0 | 0 |
| IRS990ScheduleR/AssetPurchaseFromOtherOrgInd | 0 | 0 |
| IRS990ScheduleR/AssetSaleToOtherOrgInd | 0 | 0 |
| IRS990ScheduleR/DivRelatedOrganizationInd | 0 | 0 |
| IRS990ScheduleR/GiftGrntCapContriFromOthOrgInd | 0 | 1 |
| IRS990ScheduleR/GiftGrntOrCapContriToOthOrgInd | 0 | 0 |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/ControlledOrganizationInd | 0 | 0 |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/ControlledOrganizationInd | 1 | 0 |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/ControlledOrganizationInd | 2 | 0 |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/DirectControllingEntityName/BusinessNameLine1Txt | 0 | EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/DirectControllingEntityName/BusinessNameLine1Txt | 1 | EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/DirectControllingEntityName/BusinessNameLine1Txt | 2 | EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/EntityTypeTxt | 0 | T |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/EntityTypeTxt | 1 | T |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/EntityTypeTxt | 2 | T |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/LegalDomicileStateCd | 0 | CA |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/LegalDomicileStateCd | 1 | CA |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/LegalDomicileStateCd | 2 | CA |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/PrimaryActivitiesTxt | 0 | INVESTMENTS |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/PrimaryActivitiesTxt | 1 | INVESTMENTS |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/PrimaryActivitiesTxt | 2 | INVESTMENTS |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/RelatedOrganizationName/BusinessNameLine1Txt | 0 | CHARITABLE REMAINDER UNITRUST (5) |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/RelatedOrganizationName/BusinessNameLine1Txt | 1 | CHARITABLE LEAD ANNUITY TRUST |
| IRS990ScheduleR/IdRelatedOrgTxblCorpTrGrp/RelatedOrganizationName/BusinessNameLine1Txt | 2 | POOLED INCOME FUND |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd | 0 | 0 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd | 1 | 0 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd | 2 | 0 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd | 3 | 0 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd | 4 | 0 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DirectControllingEntityName/BusinessNameLine1Txt | 0 | EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DirectControllingEntityName/BusinessNameLine1Txt | 1 | EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DirectControllingEntityName/BusinessNameLine1Txt | 2 | EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DirectControllingEntityName/BusinessNameLine1Txt | 3 | EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DirectControllingNACd | 0 | N/A |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DisregardedEntityName/BusinessNameLine1Txt | 0 | EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DisregardedEntityName/BusinessNameLine1Txt | 1 | MODEL TRANSITIONS FOUNDATION |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DisregardedEntityName/BusinessNameLine1Txt | 2 | HELZEL FAMILY FOUNDATION |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DisregardedEntityName/BusinessNameLine1Txt | 3 | T GARY AND KATHLEEN ROGERS SUPPORTING FAMILY FOUNDATION |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DisregardedEntityName/BusinessNameLine1Txt | 4 | EAST BAY FOUNDATION ON AGING |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/EIN | 0 | 946070996 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/EIN | 1 | 912168651 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/EIN | 2 | 942597088 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/EIN | 3 | 943381315 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/EIN | 4 | 810564387 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ExemptCodeSectionTxt | 0 | 501(C)(3) |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ExemptCodeSectionTxt | 1 | 501(C)(3) |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ExemptCodeSectionTxt | 2 | 501(C)(3) |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ExemptCodeSectionTxt | 3 | 501(C)(3) |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ExemptCodeSectionTxt | 4 | 501(C)(3) |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/LegalDomicileStateCd | 0 | CA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/LegalDomicileStateCd | 1 | CA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/LegalDomicileStateCd | 2 | CA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/LegalDomicileStateCd | 3 | CA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/LegalDomicileStateCd | 4 | CA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PrimaryActivitiesTxt | 0 | COMMUNITY SUPPORT |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PrimaryActivitiesTxt | 1 | SUPPORT EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PrimaryActivitiesTxt | 2 | GRANTS TO NON-PROFIT ENTITIES IN SUPPORT OF THE EAST BAY COMM FDN |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PrimaryActivitiesTxt | 3 | GRANTS TO NON-PROFIT ENTITIES IN SUPPORT OF THE EAST BAY COMM FDN |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PrimaryActivitiesTxt | 4 | SUPPORT EAST BAY COMMUNITY FOUNDATION |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PublicCharityStatusTxt | 0 | LINE 7 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PublicCharityStatusTxt | 1 | LINE 12A, I |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PublicCharityStatusTxt | 2 | LINE 12A, I |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PublicCharityStatusTxt | 3 | LINE 12A, I |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PublicCharityStatusTxt | 4 | LINE 12A, I |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/AddressLine1Txt | 0 | 200 FRANK H OGAWA PLAZA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/AddressLine1Txt | 1 | 200 FRANK H OGAWA PLAZA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/AddressLine1Txt | 2 | 200 FRANK H OGAWA PLAZA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/AddressLine1Txt | 3 | 200 FRANK H OGAWA PLAZA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/AddressLine1Txt | 4 | 200 FRANK H OGAWA PLAZA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/CityNm | 0 | OAKLAND |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/CityNm | 1 | OAKLAND |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/CityNm | 2 | OAKLAND |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/CityNm | 3 | OAKLAND |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/CityNm | 4 | OAKLAND |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/StateAbbreviationCd | 1 | CA |