EX-31 Rule 13a-14(d)/15d-14(d) Certifications.

 

 

I, Kunal K. Singh, certify that:

 

1. I have reviewed this report on Form 10-K and all reports onForm 10-D required to be filed in respect of the period covered by this reporton Form 10-K of the Benchmark 2021-B28 Mortgage Trust (the "Exchange Actperiodic reports");

 

2. Based on my knowledge, the Exchange Act periodic reports, takenas a whole, do not contain any untrue statement of a material fact or omit tostate a material fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading withrespect to the period covered by this report;

 

3. Based on my knowledge, all of the distribution, servicing andother information required to be provided under Form 10-D for the periodcovered by this report is included in the Exchange Act periodic reports;

 

4. Based on my knowledge and the servicer compliance statementsrequired in this report under Item 1123 of Regulation AB, and except asdisclosed in the Exchange Act periodic reports, the servicers have fulfilledtheir obligations under the servicing agreements in all material respects; and

 

5. All of the reports on assessment of compliance with servicingcriteria for asset-backed securities and their related attestation reports onassessment of compliance with servicing criteria for asset-backed securitiesrequired to be included in this report in accordance with Item 1122 ofRegulation AB and Exchange Act Rules 13a-18 and 15d-18 have been included as anexhibit to this report, except as otherwise disclosed in this report. Anymaterial instances of noncompliance described in such reports have beendisclosed in this report on Form 10-K.

 

In giving the certifications above, I have reasonably relied oninformation provided to me by the following unaffiliated parties:

 

Midland Loan Services, a Division of PNC Bank, NationalAssociation, as Master Servicer, Midland Loan Services, a Division of PNC Bank,National Association, as Special Servicer prior to June 13, 2022, LNR Partners,LLC, as Special Servicer on and after June 13, 2022, Wells Fargo Bank, NationalAssociation, as Trustee and Certificate Administrator, Wells Fargo Bank,National Association, as Custodian, Pentalpha Surveillance LLC, as OperatingAdvisor, Computershare Trust Company, National Association, as ServicingFunction Participant for the Certificate Administrator, Computershare TrustCompany, National Association, as Servicing Function Participant for the Custodian,Midland Loan Services, a Division of PNC Bank, National Association, as PrimaryServicer for the Colonnade Corporate Center Mortgage Loan, Midland LoanServices, a Division of PNC Bank, National Association, as Special Servicer forthe Colonnade Corporate Center Mortgage Loan, Wilmington Trust, NationalAssociation, as Trustee for the Colonnade Corporate Center Mortgage Loan,Citibank, N.A., as Custodian for the Colonnade Corporate Center Mortgage Loan,Park Bridge Lender Services LLC, as Operating Advisor for the ColonnadeCorporate Center Mortgage Loan, U.S. Bank National Association, as ServicingFunction Participant for the Colonnade Corporate Center Mortgage Loan, MidlandLoan Services, a Division of PNC Bank, National Association, as Primary Servicerfor the 4500 Academy Road Distribution Center Mortgage Loan, Midland LoanServices, a Division of PNC Bank, National Association, as Special Servicer forthe 4500 Academy Road Distribution Center Mortgage Loan, Wilmington Trust,National Association, as Trustee for the 4500 Academy Road Distribution CenterMortgage Loan, Citibank, N.A., as Custodian for the 4500 Academy RoadDistribution Center Mortgage Loan, Park Bridge Lender Services LLC, asOperating Advisor for the 4500 Academy Road Distribution Center Mortgage Loan,U.S. Bank National Association, as Servicing Function Participant for the 4500Academy Road Distribution Center Mortgage Loan, KeyBank National Association,as Primary Servicer for the One SoHo SquareMortgage Loan,Midland Loan Services, a Division of PNC Bank, National Association, as SpecialServicer for the One SoHo Square Mortgage Loan, U.S. Bank National Association,as Trustee for the One SoHo Square Mortgage Loan prior to September 5, 2022,U.S. Bank Trust Company, National Association, as Trustee for the One SoHoSquare Mortgage Loan on and after September 5, 2022, U.S. Bank NationalAssociation, as Custodian for the One SoHo Square Mortgage Loan, PentalphaSurveillance LLC, as Operating Advisor for the One SoHo Square Mortgage Loan,Wells Fargo Bank, National Association, as Primary Servicer for The DomainMortgage Loan,KeyBank National Association,as Special Servicerfor The Domain MortgageLoan, Wilmington Trust, National Association, as Trustee forThe Domain Mortgage Loan, Wells Fargo Bank, NationalAssociation, as Custodian for The Domain Mortgage Loan, Park Bridge LenderServices LLC, as Operating Advisor for The Domain Mortgage Loan, CoreLogicSolutions, LLC., as Servicing Function Participant for The Domain Mortgage Loan,Computershare Trust Company, National Association, as Servicing FunctionParticipant for the Custodian for The Domain Mortgage Loan, Midland LoanServices, a Division of PNC Bank, National Association, as Primary Servicer forthe Watermark Tempe Mortgage Loan, LNR Partners, LLC, as Special Servicer fortheWatermark Tempe Mortgage Loan, Wells FargoBank, National Association, as Trustee for the Watermark Tempe Mortgage Loan,Wells Fargo Bank, National Association, as Custodian for the Watermark Tempe MortgageLoan, Park Bridge Lender Services LLC, as Operating Advisor for the WatermarkTempe Mortgage Loan, Computershare Trust Company, National Association, asServicing Function Participant for the Custodian for the Watermark TempeMortgage Loan, Midland Loan Services, a Division of PNC Bank, NationalAssociation, as Primary Servicer for the 2 Washington Mortgage Loan, LNRPartners, LLC, as Special Servicer for the 2 Washington Mortgage Loan, WellsFargo Bank, National Association, as Trustee for the 2 Washington MortgageLoan, Wells Fargo Bank, National Association, as Custodian for the 2 WashingtonMortgage Loan, Park Bridge Lender Services LLC, as Operating Advisor for the 2Washington Mortgage Loan, Computershare Trust Company, National Association, asServicing Function Participant for the Custodian for the 2 Washington MortgageLoan, Midland Loan Services, a Division of PNC Bank, National Association, asPrimary Servicer for the Huntsville Office Portfolio Mortgage Loan, 3650 REITLoan Servicing LLC, as Special Servicer for the Huntsville Office PortfolioMortgage Loan, Wells Fargo Bank, National Association, as Trustee for theHuntsville Office Portfolio Mortgage Loan, Wells Fargo Bank, NationalAssociation, as Custodian for the Huntsville Office Portfolio Mortgage Loan,Park Bridge Lender Services LLC, as Operating Advisor for the Huntsville OfficePortfolio Mortgage Loan, and Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian for the Huntsville OfficePortfolio Mortgage Loan.

 

 

 

 Dated: March 15, 2023 

 

/s/ Kunal K. Singh

Kunal K. Singh

President and Chief Executive Officer

(seniorofficer in charge of securitization of the depositor)