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

 

 

I,Kunal K. Singh, certify that:

 

1. Ihave reviewed this report on Form 10-K and all reports on Form 10-D required tobe filed in respect of the period covered by this report on Form 10-K of theBenchmark 2021-B28 Mortgage Trust (the "Exchange Act periodicreports");

 

2.Based on my knowledge, the Exchange Act periodic reports, taken as a whole, donot contain any untrue statement of a material fact or omit to state a materialfact necessary to make the statements made, in light of the circumstances underwhich such statements were made, not misleading with respect to the periodcovered by this report;

 

3.Based on my knowledge, all of the distribution, servicing and other informationrequired to be provided under Form 10-D for the period covered by this reportis included in the Exchange Act periodic reports;

 

4.Based on my knowledge and the servicer compliance statements required in thisreport under Item 1123 of Regulation AB, and except as disclosed in theExchange Act periodic reports, the servicers have fulfilled their obligationsunder the servicing agreements in all material respects; and

 

5. Allof the reports on assessment of compliance with servicing criteria forasset-backed securities and their related attestation reports on assessment ofcompliance with servicing criteria for asset-backed securities required to beincluded in this report in accordance with Item 1122 of Regulation AB andExchange Act Rules 13a-18 and 15d-18 have been included as an exhibit to thisreport, except as otherwise disclosed in this report. Any material instances ofnoncompliance described in such reports have been disclosed in this report onForm 10-K.

 

Ingiving the certifications above, I have reasonably relied on informationprovided to me by the following unaffiliated parties:

 

MidlandLoan Services, a Division of PNC Bank, National Association, as MasterServicer, LNR Partners, LLC, as Special Servicer, 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 theCustodian, Midland Loan Services, a Division of PNC Bank, National Association,as Primary Servicer for the Colonnade Corporate Center Mortgage Loan, MidlandLoan Services, a Division of PNC Bank, National Association, as SpecialServicer for the Colonnade Corporate Center Mortgage Loan prior to May 10,2023, K-Star Asset Management LLC, as Special Servicer for the ColonnadeCorporate Center Mortgage Loan on and after May 10, 2023, Wilmington Trust,National Association, as Trustee for the Colonnade Corporate Center MortgageLoan, Citibank, N.A., as Custodian for the Colonnade Corporate Center MortgageLoan, 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 PrimaryServicer for the 4500 Academy Road Distribution Center Mortgage Loan, MidlandLoan Services, a Division of PNC Bank, National Association, as SpecialServicer for the 4500 Academy Road Distribution Center Mortgage Loan prior toMay 10, 2023, K-Star Asset Management LLC, as Special Servicer for the 4500Academy Road Distribution Center Mortgage Loan on and after May 10, 2023,Wilmington Trust, National Association, as Trustee for the 4500 Academy RoadDistribution Center Mortgage Loan, Citibank, N.A., as Custodian for the 4500Academy Road Distribution Center Mortgage Loan, Park Bridge Lender ServicesLLC, as Operating Advisor for the 4500 Academy Road Distribution CenterMortgage Loan, U.S. Bank National Association, as Servicing FunctionParticipant for the 4500 Academy Road Distribution Center Mortgage Loan,KeyBank National Association, as Primary Servicer for the One SoHo SquareMortgage Loan, Midland Loan Services, a Division of PNCBank, National Association, as Special Servicer for the One SoHo SquareMortgage Loan prior to May 15, 2023, K-Star Asset Management LLC, as SpecialServicer for the One SoHo Square Mortgage Loan on and after May 15, 2023, U.S.Bank Trust Company, National Association, as Trustee for the One SoHo SquareMortgage Loan, U.S. Bank National Association, as Custodian for the One SoHoSquare Mortgage Loan, Pentalpha Surveillance LLC, as Operating Advisor for theOne SoHo Square Mortgage Loan, Wells Fargo Bank, National Association, asPrimary Servicer for The Domain Mortgage Loan,KeyBankNational Association, as Special ServicerforThe Domain Mortgage Loan, Wilmington Trust, National Association, as TrusteeforThe Domain Mortgage Loan, Wells FargoBank, National Association, as Custodian for The Domain Mortgage Loan, ParkBridge Lender Services LLC, as Operating Advisor for The Domain Mortgage Loan,CoreLogic Solutions, LLC., as Servicing Function Participant for The DomainMortgage Loan, Computershare Trust Company, National Association, as ServicingFunction Participant for the Custodian for The Domain Mortgage Loan, MidlandLoan Services, a Division of PNC Bank, National Association, as PrimaryServicer for the Watermark Tempe Mortgage Loan, LNR Partners, LLC, as SpecialServicer for theWatermark Tempe MortgageLoan, Wells Fargo Bank, National Association, as Trustee for the WatermarkTempe Mortgage Loan, Wells Fargo Bank, National Association, as Custodian forthe Watermark Tempe Mortgage Loan, Park Bridge Lender Services LLC, asOperating Advisor for the Watermark Tempe Mortgage Loan, Computershare TrustCompany, National Association, as Servicing Function Participant for theCustodian for the Watermark Tempe Mortgage Loan, Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer for the 2Washington Mortgage Loan, LNR Partners, LLC, as Special Servicer for the 2Washington Mortgage Loan, Wells Fargo Bank, National Association, as Trusteefor the 2 Washington Mortgage Loan, Wells Fargo Bank, National Association, asCustodian for the 2 Washington Mortgage Loan, Park Bridge Lender Services LLC,as Operating Advisor for the 2 Washington Mortgage Loan, Computershare TrustCompany, National Association, as Servicing Function Participant for theCustodian for the 2 Washington Mortgage Loan, Midland Loan Services, a Divisionof PNC Bank, National Association, as Primary Servicer for the HuntsvilleOffice Portfolio Mortgage Loan, 3650 REIT Loan Servicing LLC, as SpecialServicer for the Huntsville Office Portfolio Mortgage Loan, Wells Fargo Bank,National Association, as Trustee for the Huntsville Office Portfolio MortgageLoan, Wells Fargo Bank, National Association, as Custodian for the HuntsvilleOffice Portfolio Mortgage Loan, Park Bridge Lender Services LLC, as OperatingAdvisor for the Huntsville Office Portfolio Mortgage Loan, and ComputershareTrust Company, National Association, as Servicing Function Participant for theCustodian for the Huntsville Office Portfolio Mortgage Loan.

 

 

 

 Dated:March 18, 2024

 

/s/Kunal K. Singh

KunalK. Singh

Presidentand Chief Executive Officer

(seniorofficer in charge of securitization of the depositor)