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

 

I,Patrick A. Remmert Jr., 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 CSAIL 2015-C3  Commercial 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:Midland Loan Services, a Division of PNC Bank, National Association, as MasterServicer, Rialto Capital Advisors, LLC, as Special Servicer, Wells Fargo Bank,National Association, as Trustee and Certificate Administrator, Wells FargoBank, National Association, as Custodian, Pentalpha Surveillance LLC, asOperating Advisor, KeyBank National Association, as Primary Servicer for the Soho-TribecaGrand Hotel Portfolio Mortgage Loan, C-III Asset Management LLC, as SpecialServicer for the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan, Wells FargoBank, National Association, as Trustee and Certificate Administrator for theSoho-Tribeca Grand Hotel Portfolio Mortgage Loan, Wells Fargo Bank, NationalAssociation, as Custodian for the Soho-Tribeca Grand Hotel Portfolio MortgageLoan, Park Bridge Lender Services LLC, as Operating Advisor for theSoho-Tribeca Grand Hotel Portfolio Mortgage Loan, KeyBank National Association,as Primary Servicer for the Westfield Trumbull Mortgage Loan, C-III AssetManagement LLC, as Special Servicer for the Westfield Trumbull Mortgage Loan,Wells Fargo Bank, National Association, as Trustee and Certificate Administratorfor the Westfield Trumbull Mortgage Loan, Wells Fargo Bank, NationalAssociation, as Custodian for the Westfield Trumbull Mortgage Loan, Park BridgeLender Services LLC, as Operating Advisor for the Westfield Trumbull MortgageLoan, Wells Fargo Bank, National Association, as Primary Servicer for theSterling & Milagro Apartments Mortgage Loan, Rialto Capital Advisors, LLC,as Special Servicer for the Sterling & Milagro Apartments Mortgage Loan,Wilmington Trust, National Association, as Trustee for the Sterling &Milagro Apartments Mortgage Loan, Wells Fargo Bank, National Association, asCertificate Administrator for the Sterling & Milagro Apartments MortgageLoan, Wells Fargo Bank, National Association, as Custodian for the Sterling &Milagro Apartments Mortgage Loan, Park Bridge Lender Services LLC, as OperatingAdvisor for the Sterling & Milagro Apartments Mortgage Loan, CoreLogicCommercial Real Estate Services, Inc., as Servicing Function Participant forthe Sterling & Milagro Apartments Mortgage Loan, National Tax Search, LLC,as Servicing Function Participant for the Sterling & Milagro ApartmentsMortgage Loan, Wells Fargo Bank, National Association, as Primary Servicer forthe Westfield Wheaton Mortgage Loan, Rialto Capital Advisors, LLC, as SpecialServicer for the Westfield Wheaton Mortgage Loan, Wilmington Trust, NationalAssociation, as Trustee for the Westfield Wheaton Mortgage Loan, Wells FargoBank, National Association, as Certificate Administrator for the WestfieldWheaton Mortgage Loan, Wells Fargo Bank, National Association, as Custodian forthe Westfield Wheaton Mortgage Loan, Park Bridge Lender Services LLC, asOperating Advisor for the Westfield Wheaton Mortgage Loan, CoreLogic CommercialReal Estate Services, Inc., as Servicing Function Participant for the WestfieldWheaton Mortgage Loan, National Tax Search, LLC, as Servicing FunctionParticipant for the Westfield Wheaton Mortgage Loan, Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer for the WPCDepartment Store Portfolio Mortgage Loan, LNR Partners, LLC, as SpecialServicer for the WPC Department Store Portfolio Mortgage Loan, U.S. BankNational Association, as Trustee, Certificate Administrator and Custodian forthe WPC Department Store Portfolio Mortgage Loan, and Pentalpha SurveillanceLLC, as Operating Advisor for the WPC Department Store Portfolio Mortgage Loan.

 

Dated: March 23, 2017

 

/s/Patrick A. Remmert Jr.

President

(senior officer in charge ofsecuritization of the depositor)