Rule13a-14(d)/15d-14(d) Certifications.

 

I,Helaine M. Kaplan, certify that:

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| 1.     | I have reviewed this report  on Form 10-K and all reports on Form 10-D required to be filed in respect of  the period covered by this report on Form 10-K of the COMM 2015-DC1 Mortgage  Trust (the "Exchange Act periodic reports");                                                                                                                                                                                                                                                                                                                                  |
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| 2.     | Based on my knowledge, the  Exchange Act periodic reports, taken as a whole, do not contain any untrue  statement of a material fact or omit to state a material fact necessary to  make the statements made, in light of the circumstances under which such  statements were made, not misleading with respect to the period covered by  this report;                                                                                                                                                                                                                           |
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| 3.     | Based on my knowledge, all  of the distribution, servicing and other information required to be provided  under Form 10-D for the period covered by this report is included in the  Exchange Act periodic reports;                                                                                                                                                                                                                                                                                                                                                               |
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| 4.     | Based on my knowledge and  the servicer compliance statements required in this report under Item 1123 of  Regulation AB, and except as disclosed in the Exchange Act periodic reports,  the servicers have fulfilled their obligations under the servicing agreements  in all material respects; and                                                                                                                                                                                                                                                                             |
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| 5.     | All of the reports on  assessment of compliance with servicing criteria for asset-backed securities  and their related attestation reports on assessment of compliance with  servicing criteria for asset-backed securities required to be included in  this report in accordance with Item 1122 of Regulation AB and Exchange Act  Rules 13a-18 and 15d-18 have been included as an exhibit to this report,  except as otherwise disclosed in this report. Any material instances of  noncompliance described in such reports have been disclosed in this report on  Form 10-K. |
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Ingiving the certifications above, I have reasonably relied on informationprovided to me by the following unaffiliated parties:KeyBank National Association, as Master Servicer, Rialto Capital Advisors, LLC, as Special Servicer, Wells Fargo Bank, National Association, as Trustee andCertificate Administrator, Wells Fargo Bank, National Association, asCustodian, Park Bridge Lender Services LLC, as Operating Advisor, BerkadiaCommercial Mortgage LLC, as Primary Servicer, Wells Fargo Bank, NationalAssociation, as Primary Servicer for the 760 & 800 Westchester AvenueMortgage Loan, Rialto Capital Advisors, LLC, as Special Servicer for the 760& 800 Westchester Avenue Mortgage Loan, Wilmington Trust, NationalAssociation, as Trustee for the 760 & 800 Westchester Avenue Mortgage Loan,Wells Fargo Bank, National Association, as Certificate Administrator for the760 & 800 Westchester Avenue Mortgage Loan, Wells Fargo Bank, NationalAssociation, as Custodian for the 760 & 800 Westchester Avenue MortgageLoan, TriMont Real Estate Advisors, Inc., as Trust Advisor for the 760 &800 Westchester Avenue Mortgage Loan, CoreLogic Commercial Real EstateServices, Inc., as Servicing Function Participant for the 760 & 800Westchester Avenue Mortgage Loan, National Tax Search, LLC, as ServicingFunction Participant for the 760 & 800 Westchester Avenue Mortgage Loan,Wells Fargo Bank, National Association , as Primary Servicer for the 100 West57th Street Mortgage Loan, Rialto Capital Advisors, LLC, as Special Servicerfor the 100 West 57th Street Mortgage Loan, Wilmington Trust, NationalAssociation, as Trustee for the 100 West 57th Street Mortgage Loan, Wells FargoBank, National Association, as Certificate Administrator for the 100 West 57thStreet Mortgage Loan, Wells Fargo Bank, National Association, as Custodian forthe 100 West 57th Street Mortgage Loan, Pentalpha Surveillance LLC, as TrustAdvisor for the 100 West 57th Street Mortgage Loan, CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant for the 100 West 57thStreet Mortgage Loan, and National Tax Search, LLC, as Servicing FunctionParticipant for the 100 West 57th Street Mortgage Loan.

 

Dated: March 22, 2017

 

/s/Helaine M. Kaplan

President

(senior officer in charge ofsecuritization of the depositor)