EXHIBIT 31.1

CERTIFICATION

I, Harold F. Zagunis, Chief Financial Officer and Secretary of Sequoia Residential Funding, Inc., a Delaware corporation, hereby certify that:

1. I have reviewed this annual report on Form 10-K/A, and all reports on Form 8-K containing distribution or servicing reports filed in respect of the Certificates for periods included in the year covered by this annual report, of Sequoia Residential Funding, Inc.;

2. Based on my knowledge, the information in these reports, taken as a whole, does 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 as of the last day of the period covered by this annual report;

3. Based on my knowledge, the distribution or servicing information required to be provided to the trustee by the servicers under the pooling and servicing agreement, for inclusion in these reports is included in these reports;

4. Based on my knowledge and upon the annual compliance statement included in the report and required to be delivered to the trustee in accordance with the terms of the pooling and servicing agreement, and except as disclosed in the reports, the servicers have fulfilled their obligations in all material respects under the servicing agreements; and

5. The reports disclose all significant deficiencies relating to the servicers’ compliance with the minimum servicing standards based upon the report provided by an independent public accountant, after conducting a review in compliance with the Uniform Attestation Program for Mortgage Bankers or similar procedure, as set forth in the pooling and servicing agreement, that is included in these reports.

In giving the certifications above, I have reasonably relied on information provided to me by the following unaffiliated parties: Morgan Stanley Credit Corporation (formerly known as Morgan Stanley Dean Witter Credit Corporation), as Servicer, GreenPoint Mortgage Funding, Inc., as Servicer, PHH Mortgage Corporation (formerly Cendant Mortgage Corporation), as Servicer, Bank of America, N.A., as Servicer, GMAC Mortgage Corporation, as Servicer, Residential Funding Corporation, as Servicer, and National City Mortgage Co., as Servicer.

Date: May 31, 2006


/s/ Harold F. Zagunis Signature
Name: Harold F. Zagunis
Title: Chief Financial Officer and Secretary

Sequoia Mortgage Trust 2005-3 10-K/A