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


I, David Nass, certify that:

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 UBS Commercial Mortgage Trust 2012-C1 (the "Exchange Act
periodic reports");

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;

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;

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

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.

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

Wells Fargo Bank, National Association, as Master Servicer, Rialto Capital
Advisors, LLC, as Special Servicer, Deutsche Bank Trust Company Americas,
as Trustee, Certificate Administrator, and Custodian, TriMont Real Estate
Advisors Inc., as Operating Advisor, CoreLogic Commercial Real Estate
Services, Inc., as Servicing Function Participant, National Tax Search,
LLC, as Servicing Function Participant, KeyBank National Association (as
successor to KeyCorp Real Estate Capital Markets, Inc.), as Primary
Servicer, Wells Fargo Bank, National Association, as Primary Servicer for
the Trinity Centre Mortgage Loan, Rialto Capital Advisors, LLC, as Special
Servicer for the Trinity Centre Mortgage Loan, Deutsche Bank Trust Company
Americas, as Trustee, Certificate Administrator, and Custodian for the
Trinity Centre Mortgage Loan, TriMont Real Estate Advisors Inc., as
Operating Advisor for the Trinity Centre Mortgage Loan, CoreLogic
Commercial Real Estate Services, Inc., as Servicing Function Participant
for the Trinity Centre Mortgage Loan, National Tax Search, LLC, as
Servicing Function Participant for the Trinity Centre Mortgage Loan,
KeyBank National Association (as successor to KeyCorp Real Estate Capital
Markets, Inc.), as Primary Servicer for the Poughkeepsie Galleria Mortgage
Loan, Rialto Capital Advisors, LLC, as Special Servicer for the
Poughkeepsie Galleria Mortgage Loan, Deutsche Bank Trust Company Americas,
as Trustee, Certificate Administrator, and Custodian for the Poughkeepsie
Galleria Mortgage Loan, TriMont Real Estate Advisors Inc., as Operating
Advisor for the Poughkeepsie Galleria Mortgage Loan, Wells Fargo Bank,
National Association, as Primary Servicer for the 1700 Market Street
Mortgage Loan, Rialto Capital Advisors, LLC, as Special Servicer for the
1700 Market Street Mortgage Loan, Deutsche Bank Trust Company Americas, as
Trustee, Certificate Administrator, and Custodian for the 1700 Market
Street Mortgage Loan, TriMont Real Estate Advisors Inc., as Operating
Advisor for the 1700 Market Street Mortgage Loan, CoreLogic Commercial
Real Estate Services, Inc., as Servicing Function Participant for the
1700 Market Street Mortgage Loan, and National Tax Search, LLC, as
Servicing Function Participant for the 1700 Market Street Mortgage Loan.

        Dated: March 27, 2015

        /s/ David Nass

        David Nass
        President and Chief Executive Officer
        (senior officer in charge of securitization of the depositor)