a - rpt10k

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

UNITED STATES

FORM 10-K

[ X ] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

(Exact Name of Registrant as Specified in its Charter)

(State or Other Jurisdiction

Of Incorporation)

Registrant's telephone number, including area code:

Credit Suisse First Boston Mortgage Securities Corp., Home Equity Asset Trust 2005-7

Credit Suisse First Boston Mortgage Securities Corp.

Delaware

(I.R.S. Employer

Identification No.)

13-3320910

Commission File Number :

333-120966-32

(Address of Principal Executive Offices)

New York, New York

11 Madison Avenue

(Zip Code)

10010

(212) 538-3000

Securities registered pursuant to Section 12(b) of the Act:

None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of
the Securities Act.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or
15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period
that the registrant was required to file such reports), and (2) has been subject to such filing requirements
for the past 90 days.

For the fiscal year ended December 31, 2005

For the transition period from _____________ to _____________

(Issuing Entity)

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13
or Section 15(d) of the Act.

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K ( 229.405
of this chapter) is not contained herein, and will not be contained, to the best of registrant's knowledge, in
definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K.

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).

[ Yes]

Home Equity Pass-Through Certificates

Series 2005-7

Documents incorporated by reference:

None

State the aggregate market value of the voting and non-voting common equity held by non-affiliates computed by
reference to the price at which the common equity was last sold, or the average bid and asked price of such
common equity, as of the last business day of the registrant's most recently completed second fiscal quarter. Not Applicable.

[X No]

[ Yes] [X No]

[X Yes] [ No]

[X]

[ Yes] [X No]

Large accelerated filer [ ]

Accelerated filer [ ]

Non-accelerated filer [X]

(Exact Name of Depositor as Specified in its Charter)

(Exact Name of Sponsor as Specified in its Charter)

Credit Suisse First Boston Mortgage Securities Corp.

PART I

Item 1. Business.

Not Applicable.

Item 1A. Risk Factors.

Item 1B. Unresolved Staff Comments.

Item 2. Properties.

Item 3. Legal Proceedings.

There were no legal proceedings.

Item 4. Submission of Matters to a Vote of Security Holders.

There were no matters submitted to a vote of the Security Holders.

Not Applicable.

Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity
Securities.

Item 6. Selected Financial Data.

No established public trading market for the Certificates exists.

Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operation.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

Item 8. Financial Statements and Supplementary Data.

Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure.

Item 9A. Controls and Procedures.

Item 9B. Other Information.

Not Applicable.

PART II

Not Applicable.

There are approximately

holders of record as of the end of the reporting year.

Fifty-nine (59)

Item 10. Directors and Executive Officers of the Registrant.

Item 11. Executive Compensation.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

Item 13. Certain Relationships and Related Transactions.

Item 14. Principal Accounting Fees and Services.

PART III

Not Applicable.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this
report to be signed on its behalf by the undersigned, thereunto duly authorized.

By (Signature and Title):

Date

(Registrant):

Credit Suisse First Boston Mortgage Securities Corp.

03-30-2006

/s/ Bruce Kaiserman

Bruce Kaiserman

Vice President

a) 1. Not Applicable.

Item 15. Exhibits, Financial Statement Schedules.

2. Not Applicable.
3. Exhibits.

b) See (a) 3 above.
c) Not Applicable.

PART IV

31.1 Sarbanes-Oxley Certification
99.1 Independent Accountant's Servicing Report for the year ended December 31, 2005

99.2 Report of Management as to compliance with minimum servicing standards for the year ended December 31, 2005

99.3 Annual Statement of Compliance for the year ended December 31, 2005

a) Ocwen Loan Servicing, LLC, as Servicer
b) Select Portfolio Servicing, Inc., as Servicer
c) Wells Fargo Home Mortgage, Inc., as Servicer

Exhibit Index

31.1 Sarbanes-Oxley Certification
99.1 Independent Accountant's Servicing Report for the year ended December 31, 2005

99.2 Report of Management as to compliance with minimum servicing standards for the year ended December 31, 2005

99.3 Annual Statement of Compliance for the year ended December 31, 2005

a) Ocwen Loan Servicing, LLC, as Servicer
b) Select Portfolio Servicing, Inc., as Servicer
c) Wells Fargo Home Mortgage, Inc., as Servicer