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

  I, Helaine M. Kaplan, 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 COMM 2012-CCRE4 Mortgage Trust(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, Torchlight Loan
    Services, LLC, as Special Servicer, U.S. Bank National Association, as
    Trustee, Wells Fargo Bank, National Association, as Certificate
    Administrator, Wells Fargo Bank, National Association, as Custodian, Park
    Bridge Lender Services LLC, as Operating Advisor, CoreLogic Commercial Real
    Estate Services, Inc., as Servicing Function Participant, National Tax
    Search, LLC, as Servicing Function Participant, Wells Fargo Bank, National
    Association, as Primary Servicer for the Emerald Square Mall Mortgage Loan,
    Midland Loan Services, a Division of PNC Bank, National Association, as
    Special Servicer for the Emerald Square Mall Mortgage Loan, U.S. Bank
    National Association, as Trustee for the Emerald Square Mall Mortgage Loan,
    Situs Holdings, LLC, as Operating Advisor for the Emerald Square Mall
    Mortgage Loan, CoreLogic Commercial Real Estate Services, Inc., as
    Servicing Function Participant for the Emerald Square Mall Mortgage Loan,
    and National Tax Search, LLC, as Servicing Function Participant for the
    Emerald Square Mall Mortgage Loan.


Date:  March 28, 2014

/s/ Helaine M. Kaplan
Helaine M. Kaplan
President
(senior officer in charge of securitization of the depositor)