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

 

I,Anthony Sfarra, 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 Wells Fargo Commercial  Mortgage Trust 2015-SG1 (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 information providedto me by the following unaffiliated parties: 

 

RialtoCapital Advisors, LLC, as Special Servicer, Wilmington Trust, NationalAssociation, as Trustee, TriMont Real Estate Advisors, Inc., as Trust Advisor, CoreLogicCommercial Real Estate Services, Inc., as Servicing Function Participant,National Tax Search, LLC, as Servicing Function Participant, Prudential AssetResources, Inc., as Primary Servicer, Rialto Capital Advisors, LLC, as SpecialServicer for the Patriots Park Mortgage Loan, Wilmington Trust, NationalAssociation, as Trustee for the Patriots Park Mortgage Loan, TriMont RealEstate Advisors, Inc., as Trust Advisor for the Patriots Park Mortgage Loan,CoreLogic Commercial Real Estate Services, Inc., as Servicing FunctionParticipant for the Patriots Park Mortgage Loan, and National Tax Search, LLC,as Servicing Function Participant for the Patriots Park Mortgage Loan.

 

Dated: March 27, 2017

 

/s/ Anthony SfarraPresident

(senior officer in charge of securitizationof the depositor)