Document:

EX-10.10

Exhibit 10.10

December 19, 2006

New Century Mortgage Corporation

as Reference Agent

18400 Von Karman, Suite 1000

Irvine, CA 92616

Ladies and Gentlemen:

Reference is made to the Security Agreement, dated as of December 19, 2006, (as amended,
supplemented or otherwise modified, the “Security Agreement”), between St. Andrew Funding
Trust, as Issuer, and Deutsche Bank Trust Company Americas, as Collateral Agent. Unless otherwise
defined herein, each capitalized term used herein shall have the meaning ascribed to such term in
Schedule I to the Security Agreement. This letter agreement will confirm your appointment by the
Issuer as “Reference Agent,” and your acceptance of such appointment, on the terms and conditions
hereof.

1. Services. From the Initial Closing Date up to and including the date that the
Mortgage Loan Purchase and Servicing Agreement terminates, pursuant to the terms of Section
11.1 thereof (the “Termination Date”), you agree to provide and perform those services
with respect to and as set forth in the Program Documents, assigned to or to be performed by the
“Reference Agent,” including without limitation setting the “Market Value” for the Mortgage Loans
(collectively, the “Services”). You agree that your provision of the Services shall be
performed in a timely manner sufficient to permit the Issuer to comply with the terms of the
Program Documents. In performing the Services, you agree to use software provided by Quantitative
Risk Management, Inc. (“QRM”). You further agree to continue to support QRM’s software at
all times during the term of your appointment, to pay QRM’s invoices on a timely basis, and to
update the software as appropriate.

2. QRM. You agree that if any Swap Counterparty reasonably believes that the QRM
software is responsible for material inaccuracies in the marking of Mortgage Loans, and gives
notice of such belief in writing to us and to you, that you will in good faith meet with
representatives of such Swap Counterparty to attempt to resolve such concerns. You further agree
that if such concerns cannot be resolved despite your best good faith efforts, you will work with
such Swap Counterparty to resolve such concerns, including (as appropriate) by arranging meetings
with representatives of QRM, the Swap Counterparty, and yourselves, making programming or
operational changes to the software, installing patches or updates, or such other methods as appear
appropriate in your reasonable judgment.

3. Compensation. You agree that the Services shall be performed by you without
compensation, as a service to the Issuer. The Issuer shall reimburse your out-of-pocket expenses
as Allocated Expenses.

4. Standard of Care. You agree to perform the Services for the Issuer hereunder with
the same degree of care and prudence customarily exercised by you in respect of your own
operations.

5. Indemnification. You agree to indemnify, defend and hold the Issuer harmless from
and against all damages, losses and out-of-pocket expenses (including reasonable legal fees and
expenses) caused by or arising out of your fraud, gross negligence or willful misconduct in
connection herewith. In all other circumstances, the Issuer shall hold you harmless from and
against all damages, losses and expenses (including reasonable legal fees and expenses) arising out
of or related hereto; provided, however, that the Issuer shall be required to pay
any expenses, indemnities or other liabilities only to the extent provided herein and subject to
the provisions of the Security Agreement.

6. No Assignment or Transfer. You shall not terminate, assign or transfer any of your
rights or obligations hereunder without the prior written consent of the Issuer. You may, with
prior notice to the Issuer, delegate to affiliates or third parties the provision of some or all of
the Services, however no such delegation shall affect your primary responsibility for the provision
of the Services.

7. Notices. All notices, requests, demands and other communications provided for
hereunder shall be in writing (including facsimile and electronic communications) and shall be
mailed (return receipt requested), sent by facsimile or other electronic communication, or
delivered to each party at the address designated by each of the parties from time to time, and any
such notice, request, demand or other communication shall be effective upon receipt.

8. Severability. In the event any provision of this letter is held invalid or
unenforceable, such holding shall not invalidate or render unenforceable any other provision
hereof.

9. Headings. The section headings appearing herein are included solely for
convenience of reference and are not intended to affect the interpretation of any provision of this
letter.

10. No Recourse. It is expressly understood and agreed by the parties hereto that (a)
this letter agreement is executed and delivered by Christiana Bank & Trust Company, not
individually or personally but solely as Owner Trustee of the Issuer, in the exercise of the powers
and authority conferred and vested in it as trustee, (b) each of the representations, undertakings
and agreements herein made on the part of the Issuer is made and intended not as a personal
representation, undertaking and agreement by Christiana Bank & Trust Company but is made and
intended for the purpose of binding only the Issuer, (c) nothing herein contained shall be
construed as creating any liability on Christiana Bank & Trust Company, individually or personally,
to perform any covenant either expressed or implied contained herein, all such liability, if any,
being expressly waived by the parties hereto and by any Person claiming by, through or under the
parties hereto and (d) under no circumstances shall Christiana Bank & Trust Company be personally
liable for the payment of any indebtedness or expenses of the Issuer or be liable for the breach or
failure of any obligation, representation, warranty or covenant made or undertaken by the Issuer
under this letter agreement or any other related documents.

No amendment or waiver of this letter agreement shall be effective unless in writing signed by
each of the parties hereto.

You agree that the obligations of the Issuer hereunder are limited recourse obligations of the
Issuer payable solely from the assets of the Issuer available for such purposes under the Security
Agreement. In any event, no obligation of the Issuer hereunder shall be a claim under Section 101
of the Bankruptcy Code. This provision will survive the termination of this letter agreement.

Notwithstanding any prior termination of this letter agreement, you covenant and agree that
you shall not, prior to the date which is one year and one day (or if longer, the applicable
preference period then in effect) after the payment in full of the Notes or rated obligations of
the Issuer, acquiesce, petition or otherwise, directly or indirectly, invoke or cause the Issuer to
invoke the process of any governmental authority for the purpose of commencing or sustaining a case
against the Issuer under any federal or state bankruptcy, insolvency or similar law or appointing a
receiver, liquidator, assignee, trustee, custodian, sequestrator or other similar official of the
Issuer or any substantial part of its property or ordering the winding up or liquidation of the
affairs of the Issuer. This provision will survive the termination of this letter agreement.

This letter agreement shall bind, and the benefits hereof shall inure to, each Seller, the
Servicer, the Issuer, each Swap Counterparty, the Collateral Agent, the Indenture Trustee, and each
Secured Party, and their respective successors and assigns.

This letter agreement may be executed in any number of copies, and by the different parties
hereto on the same or separate counterparts, each of which shall be an original, but all of which
shall constitute one and the same instrument.

THIS LETTER AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS
OF THE STATE OF NEW YORK.

Please sign and return the enclosed copy hereof as evidence of your agreement to the
foregoing.

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Very truly yours,

ST. ANDREW FUNDING TRUST

By: CHRISTIANA BANK & TRUST COMPANY,

not in its individual capacity, but solely as Owner Trustee

By: /s/ James M. Young

Name: James M. Young

Title: Vice President

Accepted and agreed:

NEW CENTURY MORTGAGE CORPORATION

By: /s/ Warren Licata 

Name: Warren Licata

Title: Senior Vice President

2EX-10.11

Exhibit 10.11

DISBURSEMENT ACCOUNT AGREEMENT

TO: Deutsche Bank National Trust Company, as Custodian

1761 East St. Andrew Place

Santa Ana, CA 92705

FROM: St. Andrew Funding Trust, as Issuer.

Dated: December 19, 2006

Re: Custodial Agreement, dated as of December 19, 2006, by and among St. Andrew Funding Trust,
Home123 Corporation, New Century Mortgage Corporation, Deutsche Bank Trust Company Americas and
Deutsche Bank National Trust Company (the “Custodial Agreement”). Capitalized terms used
herein shall have the meanings provided in the Custodial Agreement.

In connection with the administration of Mortgage Loans held by you as Custodian for us, we
request, and you agree to establish and maintain a segregated, non-interest bearing trust account
(the “Wire Out Account”) for and on behalf of us entitled “St. Andrew Funding Trust Wire Out
Account”, Account Number 38489. All related fees and expenses for such Wire Out Account shall be
borne by us. You shall hold funds in the Wire Out Account uninvested.

For each Mortgage Loan intended to be financed by us through funds provided by the issuance of
Secured Liquidity Notes, it is agreed as follows:

	1.	 	The Custodian shall, upon request, provide the title company (as identified by the Servicer),
New Century Mortgage Corporation as Servicer, and the Issuer with the federal wire reference
number for any particular payment.

	2.	 	Unless otherwise agreed, with respect to the Wire Out Account, the Issuer will enter
disbursement instructions by 4:00 p.m. (New York time) through the Custodian’s suspended wire
system, and the Custodian will immediately disburse such funds in accordance with such
disbursement instructions provided (i) sufficient funds exist in the Wire Out Account, and
(ii) such instructions do not include the Issuer as payee. The Custodian will disburse funds
only to the extent sufficient funds exist in the Wire Out Account.

	3.	 	The Issuer may also deliver a written wire disbursement instruction notice to the Custodian,
signed by an Authorized Representative of the Issuer.

	4.	 	The Custodian shall be under no obligation to verify, check, or review wire instructions
unless requested to do so by the Issuer.

	5.	 	The Custodian shall be entitled to same rights, protections, immunities and indemnities set
forth in the Custodial Agreement as if specifically set forth herein.

	6.	 	It is expressly understood and agreed by the parties hereto that (a) this Disbursement
Account Agreement is executed and delivered by Christiana Bank & Trust Company, not
individually or personally but solely as Owner Trustee of the Issuer, in the exercise of the
powers and authority conferred and vested in it as trustee, (b) each of the representations,
undertakings and agreements herein made on the part of the Issuer is made and intended not as
a personal representation, undertaking and agreement by Christiana Bank & Trust Company but is
made and intended for the purpose of binding only the Issuer, (c) nothing herein contained
shall be construed as creating any liability on Christiana Bank & Trust Company, individually
or personally, to perform any covenant either expressed or implied contained herein, all such
liability, if any, being expressly waived by the parties hereto and by any Person claiming by,
through or under the parties hereto and (d) under no circumstances shall Christiana Bank &
Trust Company be personally liable for the payment of any indebtedness or expenses of the
Issuer or be liable for the breach or failure of any obligation, representation, warranty or
covenant made or undertaken by the Issuer under this Disbursement Account Agreement or any
other related documents.

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ST. ANDREW FUNDING TRUST

By: CHRISTIANA BANK & TRUST COMPANY, not in its individual capacity, but solely as Owner Trustee

By: /s/ James M. Young 

Name: James M. Young

Title: Vice President

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Agreed and Approved:

DEUTSCHE BANK NATIONAL TRUST

COMPANY, as Custodian

By: /s/ Aimee Tabor

Name: Aimee Tabor

Title: Assistant Vice President

By: /s/ Carlos Falconi

Name: Carlos Falconi

Title: Associate

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