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-LC23 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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In givingthe certifications above, I have reasonably relied on information provided tome by the following unaffiliated parties:Wells Fargo Bank, National Association, as Master Servicer, LNR Partners, LLC,as Special Servicer, Wilmington Trust, National Association, as Trustee, WellsFargo Bank, National Association, as Certificate Administrator, Wells FargoBank, National Association, as Custodian, Park Bridge Lender Services LLC, asOperating Advisor, CoreLogic Commercial Real Estate Services, Inc., as ServicingFunction Participant, National Tax Search, LLC, as Servicing FunctionParticipant, Berkeley Point Capital LLC, as Primary Servicer, KeyBank NationalAssociation, as Primary Servicer for the 11 Madison Avenue Mortgage Loan,KeyBank National Association, as Special Servicer for the 11 Madison AvenueMortgage Loan, Wilmington Trust, National Association, as Trustee for the 11Madison Avenue Mortgage Loan, Wells Fargo Bank, National Association, asCertificate Administrator for the 11 Madison Avenue Mortgage Loan, Wells FargoBank, National Association, as Custodian for the 11 Madison Avenue MortgageLoan, Wells Fargo Bank, National Association, as Primary Servicer for the 40Wall Street Mortgage Loan, Rialto Capital Advisors, LLC, as Special Servicer forthe 40 Wall Street Mortgage Loan, Wilmington Trust, National Association, asTrustee for the 40 Wall Street Mortgage Loan, Wells Fargo Bank, NationalAssociation, as Certificate Administrator for the 40 Wall Street Mortgage Loan,Wells Fargo Bank, National Association, as Custodian for the 40 Wall StreetMortgage Loan, Park Bridge Lender Services LLC, as Trust Advisor for the 40Wall Street Mortgage Loan, CoreLogic Commercial Real Estate Services, Inc., asServicing Function Participant for the 40 Wall Street Mortgage Loan, NationalTax Search, LLC, as Servicing Function Participant for the 40 Wall StreetMortgage Loan, Wells Fargo Bank, National Association, as Primary Servicer forthe 32 Avenue of the Americas Mortgage Loan, Torchlight Loan Services, LLC, asSpecial Servicer for the 32 Avenue of the Americas Mortgage Loan, WilmingtonTrust, National Association, as Trustee for the 32 Avenue of the AmericasMortgage Loan, Wells Fargo Bank, National Association, as CertificateAdministrator for the 32 Avenue of the Americas Mortgage Loan, Wells FargoBank, National Association, as Custodian for the 32 Avenue of the AmericasMortgage Loan, Pentalpha Surveillance LLC, as Senior Trust Advisor for the 32Avenue of the Americas Mortgage Loan, CoreLogic Commercial Real EstateServices, Inc., as Servicing Function Participant for the 32 Avenue of theAmericas Mortgage Loan, and National Tax Search, LLC, as Servicing FunctionParticipant for the 32 Avenue of the Americas Mortgage Loan.

 

Dated: March 20, 2017

 

/s/Helaine M. Kaplan

President

(senior officer in charge ofsecuritization of the depositor)