I,
      E Todd
      Whittemore, 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 Lehman
      XS
      Trust 2006-13 (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.
      I am
      responsible for reviewing the activities performed by the servicers and based
      on
      my knowledge and the compliance reviews conducted in preparing 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:





Citibank,
      N.A., as Trustee and Paying Agent


Deutsche
      Bank National Trust Company, as Custodian


IndyMac
      Bank, F.S.B., as Servicer


LaSalle
      Bank National Association, as Custodian


U.S.
      Bank
      National Association, as Custodian


Wells
      Fargo Bank, N.A., as Custodian


Wells
      Fargo Bank, N.A., as Servicer


Deutsche
      Bank National Trust Company, as sub-contractor for IndyMac Bank,
      F.S.B.


First
      American Real Estate Solutions of Texas LP, as sub-contractor for Aurora Loan
      Services LLC


Newport
      Management Corporation, as sub-contractor for Aurora Loan Services
      LLC


Newport
      Management Corporation as sub-contractor for IndyMac Bank, F.S.B.


Regulus
      Group LLC, as sub-contractor for Wells Fargo Bank N.A.


ZC
      Sterling Insurance Agency, Inc, as sub-contractor for Wells Fargo Bank
      N.A.








Dated:
      March 30, 2007








/s/
      E.
      Todd Whittemore


E.
      Todd
      Whittemore


Executive
      Vice President


Senior
      Officer in charge of the servicing function Aurora Loan Services LLC (“Aurora”),
      in its capacity as Master Servicer