﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2024v5.1">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2025-04-15T08:35:04-05:00</ReturnTs>
    <TaxPeriodEndDt>2024-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>043108635</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>LEONARD MULHERIN &amp; GREENE PC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>625 GROVE STREET</AddressLine1Txt>
        <CityNm>BRAINTREE</CityNm>
        <StateAbbreviationCd>MA</StateAbbreviationCd>
        <ZIPCd>02184</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2024-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>300144279</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>CMARC WEST STREET INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>CMAR</BusinessNameControlTxt>
      <PhoneNum>7819357057</PhoneNum>
      <USAddress>
        <AddressLine1Txt>147 NEW BOSTON STREET</AddressLine1Txt>
        <CityNm>WOBURN</CityNm>
        <StateAbbreviationCd>MA</StateAbbreviationCd>
        <ZIPCd>01801</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>WILLIAM YETZ</PersonNm>
      <PersonTitleTxt>SR. VP OF FINANCE</PersonTitleTxt>
      <PhoneNum>7819357057</PhoneNum>
      <SignatureDt>2025-04-15</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>0</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>STEPHEN M SNOW</PreparerPersonNm>
      <PTIN>P00641289</PTIN>
      <PhoneNum>7813564800</PhoneNum>
    </PreparerPersonGrp>
    <TaxYr>2024</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990EZ documentId="RetDoc1234200001" referenceDocumentId="RetDoc1051800001">
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc1039100001">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>40810</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>19361</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>21439</ProgramServiceRevenueAmt>
      <InvestmentIncomeAmt>10</InvestmentIncomeAmt>
      <TotalRevenueAmt>40810</TotalRevenueAmt>
      <FeesAndOtherPymtToIndCntrctAmt>11881</FeesAndOtherPymtToIndCntrctAmt>
      <OccupancyRentUtltsAndMaintAmt>46295</OccupancyRentUtltsAndMaintAmt>
      <OtherExpensesTotalAmt>4473</OtherExpensesTotalAmt>
      <TotalExpensesAmt>62649</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-21839</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>225590</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>203751</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>649</BOYAmt>
        <EOYAmt>526</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <LandAndBuildingsGrp>
        <BOYAmt>452777</BOYAmt>
        <EOYAmt>440232</EOYAmt>
      </LandAndBuildingsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>10771</BOYAmt>
        <EOYAmt>13346</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>464197</BOYAmt>
        <EOYAmt>454104</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>238607</BOYAmt>
        <EOYAmt>250353</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>225590</BOYAmt>
        <EOYAmt>203751</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <PrimaryExemptPurposeTxt>TO PROVIDE AFFORDABLE HOUSING FOR DEVELOPMENTALLY DISABLED PERSONS.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>TO PROVIDE AFFORDABLE HOUSING FOR DEVELOPMENTALLY DISABLED PERSONS. (GROUP HOME LOCATED IN WOBURN, MASSACHUSETTS SERVING 5 INDIVIDUALS.)</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>49836</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>49836</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MICHAEL ROSSETTI</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAMES SULLIVAN</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>TYLER GATES</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SCOTT HAGAN</PersonNm>
        <TitleTxt>CLERK BEG. 7/024</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>KRISTEN BRANDT</PersonNm>
        <TitleTxt>CLERK THROUGH 6/2024</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DIANN SESPICO</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ARTHUR DUFFY</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>0</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>0</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>0</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>0</OrganizationDissolvedEtcInd>
      <DirectIndirectPltclExpendAmt>0</DirectIndirectPltclExpendAmt>
      <MadeLoansToFromOfficersInd>0</MadeLoansToFromOfficersInd>
      <TaxImposedUnderIRC4911Amt>0</TaxImposedUnderIRC4911Amt>
      <TaxImposedUnderIRC4912Amt>0</TaxImposedUnderIRC4912Amt>
      <TaxImposedUnderIRC4955Amt>0</TaxImposedUnderIRC4955Amt>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <TaxImposedOnOrganizationMgrAmt>0</TaxImposedOnOrganizationMgrAmt>
      <TaxReimbursedByOrganizationAmt>0</TaxReimbursedByOrganizationAmt>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>MA</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>WILLIAM J YETZ</BusinessNameLine1Txt>
        </BusinessName>
        <USAddress>
          <AddressLine1Txt>147 NEW BOSTON STREET</AddressLine1Txt>
          <CityNm>WOBURN</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01801</ZIPCd>
        </USAddress>
        <PhoneNum>7819357057</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <DonorAdvisedFndsInd>0</DonorAdvisedFndsInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <TanningServicesProvidedInd>0</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>0</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>1</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>16944</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>16631</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>13900</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>14233</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>19361</CurrentTaxYearAmt>
        <TotalAmt>81069</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>16944</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>16631</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>13900</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>14233</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>19361</CurrentTaxYearAmt>
        <TotalAmt>81069</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>81069</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>14</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>11</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>11</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>9</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>10</CurrentTaxYearAmt>
        <TotalAmt>55</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>81124</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>103091</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.99930</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.99930</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleO documentId="RetDoc1051800001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 4 - OTHER INVESTMENT INCOME</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: CASH AND RESERVE ACCOUNTS. AMOUNT: 10.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16 - OTHER EXPENSES</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: INSURANCE. AMOUNT: 3,541. DESCRIPTION: OTHER ADMINISTRATIVE EXPENSES. AMOUNT: 932. TOTAL TO FORM 990-EZ, LINE 16: 4,473.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 24 - OTHER ASSETS</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: REPLACEMENT RESERVE. BEG. OF YEAR AMOUNT: 9,414. END OF YEAR AMOUNT: 11,060. DESCRIPTION: ACCOUNTS RECEIVABLE - TENANT. BEG. OF YEAR AMOUNT: 0. END OF YEAR AMOUNT: 1,380. DESCRIPTION: TENANT DEPOSITS HELD IN TRUST. BEG. OF YEAR AMOUNT: 895. END OF YEAR AMOUNT: 896. DESCRIPTION: RESIDUAL RECEIPTS RESERVE. BEG. OF YEAR AMOUNT: 10. END OF YEAR AMOUNT: 10. DESCRIPTION: PREPAID INSURANCE. BEG. OF YEAR AMOUNT: 452. END OF YEAR AMOUNT: 0.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 26 - OTHER LIABILITIES</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: ACCOUNTS PAYABLE AND ACCRUED EXPENSES. BEG. OF YEAR AMOUNT: 13,049. END OF YEAR AMOUNT: 18,031. DESCRIPTION: TENANT SECURITY DEPOSITS. BEG. OF YEAR AMOUNT: 895. END OF YEAR AMOUNT: 896. DESCRIPTION: DUE TO NUPATH, INC. (LONG-TERM PORTION). BEG. OF YEAR AMOUNT: 29,776. END OF YEAR AMOUNT: 36,539. DESCRIPTION: LOAN PAYABLE - CEDAC. BEG. OF YEAR AMOUNT: 194,887. END OF YEAR AMOUNT: 194,887.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>