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

 

I,Kunal K. Singh, 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 JPMBB Commercial Mortgage  Securities Trust 2015-C28 (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:Wells Fargo Bank, National Association, as Master Servicer, Torchlight Loan Services,LLC, as Special Servicer, Wilmington Trust, National Association, as Trustee,Wells Fargo Bank, National Association, as Certificate Administrator, WellsFargo Bank, National Association, as Custodian, Pentalpha Surveillance LLC, asSenior Trust Advisor, CoreLogic Commercial Real Estate Services, Inc., asServicing Function Participant, National Tax Search, LLC, as Servicing FunctionParticipant, KeyBank National Association, as Primary Servicer, Midland LoanServices, a Division of PNC Bank, National Association, as Primary Servicer forthe One Campus Martius Mortgage Loan, LNR Partners, LLC, as Special Servicerfor the One Campus Martius Mortgage Loan, Wells Fargo Bank, NationalAssociation, as Trustee and Certificate Administrator for the One CampusMartius Mortgage Loan, Wells Fargo Bank, National Association, as Custodian forthe One Campus Martius Mortgage Loan, Pentalpha Surveillance LLC, as SeniorTrust Advisor for the One Campus Martius Mortgage Loan, Midland Loan Services,a Division of PNC Bank, National Association, as Primary Servicer for The ClubRow Building Mortgage Loan, LNR Partners, LLC, as Special Servicer for The ClubRow Building Mortgage Loan, Wells Fargo Bank, National Association, as Trusteeand Certificate Administrator for The Club Row Building Mortgage Loan, WellsFargo Bank, National Association, as Custodian for The Club Row BuildingMortgage Loan, Pentalpha Surveillance LLC, as Senior Trust Advisor for The ClubRow Building Mortgage Loan, Midland Loan Services, a Division of PNC Bank,National Association, as Primary Servicer for the Shaner Hotels PortfolioMortgage Loan, LNR Partners, LLC, as Special Servicer for the Shaner HotelsPortfolio Mortgage Loan, Wells Fargo Bank, National Association, as Trustee andCertificate Administrator for the Shaner Hotels Portfolio Mortgage Loan, WellsFargo Bank, National Association, as Custodian for the Shaner Hotels PortfolioMortgage Loan, Pentalpha Surveillance LLC, as Senior Trust Advisor for theShaner Hotels Portfolio Mortgage Loan, KeyBank National Association, as PrimaryServicer for the Houston Galleria Mortgage Loan, Pacific Life InsuranceCompany, as Special Servicer for the Houston Galleria Mortgage Loan, WellsFargo Bank, National Association, as Trustee and Certificate Administrator forthe Houston Galleria Mortgage Loan, and Wells Fargo Bank, National Association,as Custodian for the Houston Galleria Mortgage Loan.

 

Dated: March 22, 2017

 

/s/Kunal K. Singh

President and Chief ExecutiveOfficer

(senior officer in charge ofsecuritization of the depositor)