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

 

 

I, Patrick A. Remmert Jr., 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 CSAIL 2021-C20 Commercial Mortgage Trust (the"Exchange Act periodic 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 tothis report, except as otherwise disclosed in thisreport. Any material instances of noncompliance described in such reports havebeen disclosed 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, 3650 REIT Loan Servicing LLC, as SpecialServicer, Wells Fargo Bank, National Association, as Trustee and CertificateAdministrator, Wells Fargo Bank, National Association, as Custodian, ParkBridge Lender Services LLC, as Operating Advisor, Computershare Trust Company,National Association, as Servicing Function Participant for the CertificateAdministrator, Computershare Trust Company, National Association, as ServicingFunction Participant for the Custodian, Principal Real Estate Investors, LLC,as Primary Servicer for the 888 Figueroa Mortgage Loan, LNR Partners, LLC, asSpecial Servicer for the 888 Figueroa Mortgage Loan, Wells Fargo Bank, NationalAssociation, as Trustee for the 888 Figueroa Mortgage Loan, Wells Fargo Bank,National Association, as Custodian for the 888 Figueroa Mortgage Loan, ParkBridge Lender Services LLC, as Operating Advisor for the 888 Figueroa MortgageLoan, Computershare Trust Company, National Association, as Servicing FunctionParticipant for the Custodian for the 888 Figueroa Mortgage Loan, Midland LoanServices, a Division of PNC Bank, National Association, as Primary Servicer forThe Westchester Mortgage Loan, Pacific Life Insurance Company, as SpecialServicer for The Westchester Mortgage Loan prior toOctober 18, 2022, Midland Loan Services, a Division of PNC Bank, NationalAssociation, as Special Servicer for The Westchester Mortgage Loan on and afterOctober 18, 2022, Wells Fargo Bank, National Association, as Trustee forThe Westchester Mortgage Loan, Wells Fargo Bank, National Association, asCustodian for The Westchester Mortgage Loan, and Pentalpha Surveillance LLC, asOperating Advisor for The Westchester Mortgage Loan, Computershare TrustCompany, National Association, as Servicing Function Participant for theCustodian for The Westchester Mortgage Loan, KeyBank National Association, asPrimary Servicer for the MGM Grand & Mandalay Bay Mortgage Loan, SitusHoldings, LLC, as Special Servicer for the MGM Grand & Mandalay BayMortgage Loan, Wilmington Trust, National Association, as Trustee for the MGMGrand & Mandalay Bay Mortgage Loan, Citibank, N.A., as Custodian for theMGM Grand & Mandalay Bay Mortgage Loan, U.S. Bank National Association, asServicing Function Participant for the MGM Grand & Mandalay Bay MortgageLoan, Wells Fargo Bank, National Association, as Primary Servicer for The GraceBuilding Mortgage Loan, Situs Holdings, LLC, as Special Servicer for The GraceBuilding Mortgage Loan, Wilmington Trust, National Association, as Trustee forThe Grace Building Mortgage Loan, Wells Fargo Bank, National Association, asCustodian for The Grace Building Mortgage Loan, Park Bridge Lender ServicesLLC, as Operating Advisor for The Grace Building Mortgage Loan, CoreLogicSolutions, LLC, as Servicing Function Participant for The Grace BuildingMortgage Loan, Computershare Trust Company, National Association, as ServicingFunction Participant for the Custodian for The Grace Building Mortgage Loan,Wells Fargo Bank, National Association, as Primary Servicer for the MiamiDesign District Mortgage Loan, Rialto Capital Advisors, LLC, as SpecialServicer for the Miami Design District Mortgage Loan, Wilmington Trust,National Association, as Trustee for the Miami Design District Mortgage Loan,Wells Fargo Bank, National Association, as Custodian for the Miami DesignDistrict Mortgage Loan, Park Bridge Lender Services LLC, as Operating Advisorfor the Miami Design District Mortgage Loan, CoreLogic Solutions, LLC, asServicing Function Participant for the Miami Design District Mortgage Loan, andComputershare Trust Company, National Association, asServicing Function Participant for the Custodian for the Miami Design DistrictMortgage Loan.

 

 

 

Dated:March 15, 2023

 

 

/s/ Patrick Remmert Jr.

Patrick A. Remmert Jr.

Authorized Signatory

(seniorofficer in charge of securitization of the depositor)