UNITED STATES
                             SECURITIES AND EXCHANGE COMMISSION
                                   WASHINGTON, D.C. 20549



                                          FORM 10-K


  (Mark one)

  /X/ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934
      For the fiscal year ended December 31, 2005

      OR



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


      Commission File Number:  333-121904-01


        Credit Suisse First Boston Mortgage Securities Corp.
        Commercial Mortgage Pass-Through Certificates,
        Series 2005-C1

     (Exact name of registrant as specified in its charter)


  New York                                          54-2169451
  (State or other jurisdiction of                   54-2169452
  incorporation or organization)                    54-2169453
                                                    54-6658765
                                                    (I.R.S. Employer
                                                    Identification No.)


   c/o Wells Fargo Bank, N.A.
   9062 Old Annapolis Road
   Columbia, MD                                21045
  (Address of principal executive offices)    (Zip Code)


  Registrant's telephone number, including area code: (410) 884-2000


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

        NONE.


  Securities registered pursuant to Section 12(g) 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.

        Yes  ___     No  X


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

        Yes  ___     No  X


  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.

        Yes  X       No  ___


  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.

        Not applicable.


  Indicate by check mark whether the registrant is a large accelerated filer,
  an accelerated filer, or a non-accelerated filer. See Definition of
  "accelerated filer and large accelerated filer" in Rule 12b-2 of the
  Exchange Act. (Check One):


  Large Accelerated Filer ___  Accelerated Filer ___  Non-Accelerated Filer X


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

        Yes  ___     No  X


  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.


     Documents Incorporated by Reference

  List hereunder the following documents if incorporated by reference and
  the Part of the Form 10-K (e.g. Part I, Part II, etc.) into which the
  document is incorporated: (1)Any annual report to security holders; (2)
  Any proxy or information statement; and (3)Any prospectus filed pursuant
  to Rule 424(b) or (c) under the Securities Act of 1933. The listed
  documents should be clearly described for identification purposes (e.g.
  annual report to security holders for fiscal year ended December 24, 1980).

        Not applicable.


                                   PART I
  Item 1.  Business.

            Not applicable.


  Item 1A.  Risk Factors.

            Not applicable.


  Item 1B.  Unresolved Staff Comments.

            Not applicable.


  Item 2.  Properties.

            Not applicable.


  Item 3.  Legal Proceedings.

            The registrant knows of no material pending legal proceedings
            involving the trust created under the pooling and servicing
            agreement (the "Trust"), the Trustee, the Master Servicer, the
            Special Servicer or the registrant with respect to the Trust
            other than routine litigation incidental to the duties of the
            respective parties.


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

            None.

                                PART II

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

            No established public trading market for the Certificates exists.

            Records provided to the Trust by the DTC and the Trustee
            indicate that as of December 31, 2005, the total number of holders
            of record for the Series of Certificates is 45.


  Item 6.  Selected Financial Data.

            Not applicable.

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


            Not applicable.


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

            Not applicable.


  Item 8.  Financial Statements and Supplementary Data.

            Not applicable.


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

            None.


  Item 9A. Controls and Procedures.
            Not applicable.


  Item 9B. Other Information.

            None.


                                PART III

  Item 10. Directors and Executive Officers of the Registrant.

            Not applicable.


  Item 11. Executive Compensation.

            Not applicable.

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

            Not applicable.

  Item 13. Certain Relationships and Related Transactions.

            Not applicable.


  Item 14. Principal Accounting Fees and Services.

            Not applicable.


                                PART IV

  Item 15. Exhibits, Financial Statement Schedules.

   (a) Exhibits

     (31.1) Rule 13a-14(a)/15d-14(a) Certification

     (99.1) Annual Independent Accountants' Servicing Reports concerning
            servicing activities.

      <TABLE>

      
         <c>
      a) GMAC Commercial Mortgage Corporation, as Master Servicer <F1>
      b) LNR Partners, Inc., as Special Servicer <F1>

      </TABLE>

     (99.2) Report of Management as to Compliance with Minimum Servicing
            Standards.

      <TABLE>

      
        <c>
      a) GMAC Commercial Mortgage Corporation, as Master Servicer <F1>
      b) LNR Partners, Inc., as Special Servicer <F1>

      </TABLE>

     (99.3) Annual Statements of Compliance under the Pooling and Servicing
            Agreements.

      <TABLE>

      
         <c>
      a) GMAC Commercial Mortgage Corporation, as Master Servicer <F1>
      b) LNR Partners, Inc., as Special Servicer <F1>

      </TABLE>


     (99.4) Aggregate Statement of Principal and Interest Distributions to
            Certificate Holders.


   (b) Not applicable.

   (c) Omitted.


  <F1> Filed herewith.


                                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:



    Credit Suisse First Boston Mortgage Securities Corp.
    Commercial Mortgage Pass-Through Certificates,
    Series 2005-C1
    (Registrant)


  Signed: Credit Suisse First Boston Mortgage Securities Corp., as Depositor

  By:     Anand Gajjar, Vice President

  By: /s/ Anand Gajjar, Vice President

  Dated: March 29, 2006


  Exhibit Index

  Exhibit No.

  Ex-31.1 Rule 13a-14(a)/15d-14(a) Certification

  I, Anand Gajjar, certify that:

  1. I have reviewed this annual report on Form 10-K, and all reports on
     Form 8-K containing distribution date reports filed in respect of
     periods included in the year covered by this annual report, of
     Credit Suisse First Boston Mortgage Securities Corp., Commercial
     Mortgage Pass-Through Certificates, Series 2005-C1 Trust;

  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 servicing information required to be provided
     to the Trustee by the master servicer and special servicer under the
     pooling and servicing agreement is included in these reports;

  4. I am responsible for reviewing the activities performed by the master
     servicer and special servicer under the pooling and servicing agreement
     and based upon my knowledge and the annual compliance review required
     under the pooling and servicing agreement, and except as disclosed in the
     reports, the master servicer and special servicer have fulfilled their
     obligations under the pooling and servicing agreement; and


  5. The reports disclose all significant deficiencies relating to the
     master servicer's or special servicer's 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 Single Attestation Program for Mortgage Bankers or similar
     standard, 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:
     GMAC Commercial Mortgage Corporation as Master Servicer, LNR Partners,
     Inc. as Special Servicer, and Wells Fargo Bank, N.A. as Trustee.

     Date: March 29, 2006

     /s/ Anand Gajjar
     Signature

     Vice President
     Title


  EX-99.1 (a)
(logo)PRICEWATERHOUSECOOPERS

PricewaterhouseCoopers LLP
PricewaterhouseCoopers Center
300 Madison Avenue
New York NY 10017
Telephone (646) 471 3000
www.pwc.com



Report of Independent Accountants


To the Board of Directors and Shareholder of
GMAC Commercial Mortgage Corporation:

We have examined management's assertion, dated February 27, 2006, about GMAC
Commercial Mortgage Corporation's (the "Company's") compliance with its
established minimum master servicing policy ("Master Servicing Policy"), which
management derived from the Mortgage Bankers Association of America's Uniform
Single Attestation Program for Mortgage Bankers (USAP), as of and for the year
ended December 31, 2005 included in the accompanying management assertion (see
Exhibit I). Management is responsible for the Company's compliance with the
Master Servicing Policy. Our responsibility is to express an opinion on
management's assertion about the Company's compliance based on our examination.

Our examination was made in accordance with the standards established by the
American Institute of Certified Public Accountants and, accordingly, included
examining, on a test basis, evidence about the Company's compliance with the
Master Servicing Policy and performing such other procedures as we considered
necessary in the circumstances. We believe that our examination provides a
reasonable basis for our opinion. Our examination does not provide a legal
determination of the Company's compliance with the Master Servicing Policy.

In our opinion, management's assertion that, except for instances of
noncompliance, the Company complied with the aforementioned Master Servicing
Policy as of and for the year ended December 31, 2005 is fairly stated, in all
material respects.


/s/ PricewaterhouseCoopers LLP


February 27, 2006

[PAGE]

Exhibit I


Management's Assertion Concerning Compliance
With Minimum Master Servicing Standards

February 27, 2006

As of and for the year ended December 31, 2005, for the master servicing
transactions included in Exhibit II, GMAC Commercial Mortgage Corporation has
complied, in all material respects, with the applicable minimum master servicing
standards set forth in the company's Master Servicing Policy (attached in
Exhibit (II). which were derived from the Mortgage Bankers Association of
America's Uniform Single Attestation Program for Mortgage Bankers, except with
respect to the requirement that reconciling items shall be resolved within
ninety (90) calendar days of identification, for, which the company was not in
compliance.

As of December 31, 2005, the company was covered by various General Motors
Corporation insurance policies providing $350 million of Fidelity bond insurance
and S100 million of errors and omissions insurance.



/s/ Robert D. Feller
Robert D. Feller
Chief Executive Officer


/s/ Michael I. Lipson
Michael I. Lipson
Executive Vice President, Global Servicing



/s/ Wayne D. Hoch
Wayne D. Hoch
Executive Vice President and Chief Financial Officer

[PAGE]

Exhibit II

GMAC COMMERCIAL MORTGAGE CORPORATION
TRANSACTIONS ASSOCIATED WITH MASTER SERVICING
RESPONSIBILITIES

ACMF I SERIES 1997-Cl
AETNA SERIES 1995-C5
AMERICAN SOUTHWEST SERIES 1993-2
ASC SERIES 1996-D3
ASC SERIES 1997-D4
ATHERTON 1997-1
ATHERTON 1998-A
ATHERTON 1999-A
ATHERTON WAREHOUSE -AW960I
ATHERTON-PW WAREHOUSE
BACM 2001-Cl
BANK OF AMERICA 2002-XI
BKB SERIES 1997-Cl (LB)
CALSTERS 2002 C6
CALWEST 2003-CALW
CAPCO SERIES 1998-D7
CCMSC 2001-245 PRK AVE
CDC 2002-FX1
CDO SERIES 2004-1
CG SERIES 2005-EMG
CGMT SERIES 2004-FLI
CHASE SERIES 1996-1
CHASE SERIES 1996-2
CHASE SERIES 1997-1
CHASE SERIES 1997-2
CHASE SERIES 1998-2
CHASE SERIES 2000-FL I
CHASE-FIRST UNION 1999-1
CITICORP LEASE TRUST 1999-1
COLUMN SERIES 2002 CCL1
COMM 2001-J2
COMM 2003-LNB1
COMM 2005-FL11
COMM SERIES 2001-FL5
COMM SERIES 2004-LNB2
COMM SERIES 2004-LNB4
COMM SERIES 2005-C6
CREST GSTAR 2001-1
CSFB SERIES 1995-M1
CSFB SERIES 1997-PS1
CSFB SERIES 1998-PS2
CSFB SERIES 1999-PS3
CSFB SERIES 2000-C1
CSFB SERIES 2000-PS4
CSFB SERIES 2001-CF2

[PAGE]

CSFB SERIES 2001-SPG1
CSFB SERIES 2005-C1
CSFB SERIES 2005-05
DAIWA 1993-1
DLJ SERIES 1996-CF1
DLJ SERIES 1997-CF1
EDI
EDII
EMAC 1998
EMAC 1999
EMAC 2000
FMAC 1991-A
FMAC 1993-B
FMAC 1994-A
FMAC 1995-B
FMAC 1996-B
FMAC 1997-A
FMAC 1997-B
FMAC 1997-C
FMAC 1998-A
FMAC 1998-B
FMAC 1998-C
FMAC 1998-D
FMAC 2000-A
FMHA
FNMA SERIES 1998-M1
FOREST CITY 1994-1
FREEHOLD RACEWAY
G3 STRATEGIC INV 2002-WL1
GCCF SERIES 2005-GG3
GFCM 2003-1
GGP MALL PROP TR-SERIES 2001-GGP1
GMACCM SERIES 1996-C1
GMACCM SERIES 1997-C1
GMACCM SERIES 1997-C2
GMACCM SERIES 1998-C1
GMACCM SERIES 1998-C2
GMACCM SERIES 1999-C1
GMACCM SERIES 1999-C2
GMACCM SERIES 1999-C3
GMACCM SERIES 1999-CTL1
GMACCM SERIES 2000-C1
GMACCM SERIES 2000-C2
GMACCM SERIES 2000-C3
GMACCM SERIES 2000-FL1
GMACCM SERIES 2000-FL-F
GMACCM SERIES 2001-A
GMACCM SERIES 2001-C1
GMACCM SERIES 2001-C2
GMACCM SERIES 2001-FL1
GMACCM SERIES 2002-C1

[PAGE]

GMACCM SERIES 2002-C2
GMACCM SERIES 2002-C3
GMACCM SERIES 2002-FL1
GMACCM SERIES 2003 SENIORS
GMACCM SERIES 2003-C1
GMACCM SERIES 2003-C2
GMACCM SERIES 2003-C3
GMACCM SERIES 2003-FL1
GMACCM SERIES 2003-FLA
GMACCM SERIES 2003-FL-SNF
GMACCM SERIES 2004-C1
GMACCM SERIES 2004-C2
GMACCM SERIES 2004-C3
GMACCM SERIES 2005-C1
G-MAX 2002-FLA
GMAX 2002-FX-1
GOLDMAN SACHS SERIES 1997-GLI
GOLDMAN SACHS SERIES 1998-C1
GOLDMAN SACHS SERIES 1998-GLII
GOLDMAN SACHS SERIES 1999-C1
GOLDMAN SACHS SERIES 2001-1285
GOLDMAN SACHS SERIES 2001-GL3
GOLDMAN SACHS SERIES 2001-ROCK
GOLDMAN SACHS SERIES 2002-GSFL V
GOLDMAN SACHS SERIES 2003-C1
GOLDMAN SACHS SERIES 2005-GG4
GOLDMAN SACHS SERIES 2005-GSFL VII
HEALTHFUND 1999-1
HUD
IPS 2005-1
JP MORGAN CHASE SERIES 2001-A
JP MORGAN CHASE SERIES 2001-CIBC1
JP MORGAN CHASE SERIES 2002-C3
JP MORGAN CHASE SERIES 2004-C1
JP MORGAN CHASE SERIES 2004-C2
JP MORGAN CHASE SERIES 2004-CIBC10
JP MORGAN CHASE SERIES 2004-CIBC8
JP MORGAN CHASE SERIES 2004-CIBC9
JP MORGAN CHASE SERIES 2004-LN2
JP MORGAN CHASE SERIES 2005-CIBC11
JP MORGAN CHASE SERIES 2005-CIBC12
JP MORGAN CHASE SERIES 2005-LDP3
JP MORGAN CHASE SERIES 2005-LDP4
JP MORGAN CHASE SERIES 2005-LDP5
LEHMAN BROTHERS SERIES 1992-2
LEHMAN BROTHERS SERIES 1992-1
LEHMAN BROTHERS SERIES 1995-C2
LEHMAN BROTHERS SERIES 1996-C2
LEHMAN BROTHERS SERIES 1998-C1
LIBRARY TOWER 1998-1
LK94C2

[PAGE]

LONG LANE MASTER TRUST IV
LTC SERIES 1998-1
MCF 1996-MC2 (NATIONS)
MCF SERIES 1996-MC1
MCF SERIES 1998-MC1
MCF SERIES 1998-MC3
MERRILL LYNCH SERIES 1995-C3
MERRILL LYNCH SERIES 1996-C1
MERRILL LYNCH SERIES 1997-C1
MERRILL LYNCH SERIES 1998-C1-CTL
MERRILL LYNCH SERIES 1999 C2
MERRILL LYNCH SERIES 2000 CANADA 3
MERRILL LYNCH SERIES 2000-C4
MERRILL LYNCH SERIES 2001-C5
MERRILL LYNCH SERIES 2002-BC2P
MERRILL LYNCH SERIES 2002-C7
MERRILL LYNCH SERIES 2002-C8
MERRILL LYNCH SERIES 2003 C-11
MERRILL LYNCH SERIES 2003-C10
MERRILL LYNCH SERIES 2003-C9
MERRILL LYNCH SERIES SERIES 2000-BELL MOBILITY
MERRILL LYNCH SERIES 2005-LC1
MORGAN STANLEY SERIES 1996-C1
MORGAN STANLEY SERIES 1997-C1
MORGAN STANLEY SERIES 1997-XL1
MORGAN STANLEY SERIES 1998-CF1
MORGAN STANLEY SERIES 1998-HF1
MORGAN STANLEY SERIES 1998-HF2
MORGAN STANLEY SERIES 1999-RM1
MSDW SERIES 1997-HF1
MSDW SERIES 1999-FNV1
MSDW SERIES 2001-IQ
MSDW SERIES 2001-PPM
MSDW SERIES 2002-HQ
MSDW SERIES 2002-IQ3
MSDW SERIES 2002-WM
MSDW SERIES 2003-IQ4
MSDW SERIES 2003-IQ5
MSDW SERIES 2003-IQ5 - B&B NOTES
MSDW SERIES 2005- IQ-10
NATIONS LINK SERIES 1996-1
NEW ENGLAN MUTUAL
NOMURA SERIES 1993 1 (HM9301)
NOMURA SERIES 1995 MD IV
NOMURA SERIES 1996 MD V
NOMURA SERIES 1996 MD VI
NOMURA SERIES 1998-D6
OREGON SERIES 1995-1
PAINE WEBBER 1996-13
PRUDENTIAL SECURITIES CREDIT
REAL - T SERIES 2004-1

[PAGE]

SALOMON BROTHERS SERIES 1999-C1
SALOMON BROTHERS SERIES 2000-C1
SASCO SERIES 1997-LL1
SDG MACERICH (CMO)
SL COMMERCIAL 1997 C1
SOLAR TRUST SERIES 2001-1
SOLAR TRUST SERIES 2002-1
SOLAR TRUST SERIES 2003-CC1
U-HAUL SERIES 1993-1
USGI 1992-1

[PAGE]

Exhibit III

GMAC COMMERCIAL MORTGAGE CORPORATION
MINIMUM MASTER SERVICING POLICY

I.   CUSTODIAL BANK ACCOUNTS

     1. Reconciliations shall be prepared on a monthly basis for all custodial
        bank accounts and related bank clearing accounts. These reconciliations
        shall:

        * be mathematically accurate;

        * be prepared within forty-five (45) calendar days after the cutoff
          date, but in any event in accordance with the applicable servicing
          agreements;

        * be reviewed and approved by someone other than the person who prepared
          the reconciliation; and

        * evidence explanations for reconciling items which shall be resolved
          within ninety (90) calendar days of identification.

     2. Funds of the servicing entity shall be advanced as specified in the
        applicable servicing agreements in cases where there is potential for an
        overdraft in an investor's account or a request letter has been received
        from a subservicer for a servicing advance stipulated by the
        subservicing agreement.

     3. All cash for each custodial account shall be maintained at a federally
        insured depository institution in trust for the applicable investor or
        in an investment account in accordance with the applicable servicing
        agreement requirements.

II.  MORTGAGE PAYMENTS

     1. Mortgage payments shall be deposited into the custodial bank accounts
        and related bank clearing accounts within two business days of receipt
        from the subservicer.

     2. Mortgage payments made in accordance with the mortgagor's loan documents
        shall be posted to the applicable mortgagor records within two business
        days of receipt from the subservicer.

III. DISBURSEMENTS

     1. Remittances made via wire transfer on behalf of a mortgagor or investor
        shall be made only by authorized personnel.

     2. Amounts remitted to investors per the servicer's investor reports shall
        agree with cancelled checks, or other form of payment, or custodial bank
        statements.

[PAGE]

IV.  INVESTOR ACCOUNTING AND REPORTING

     1. Monthly investor reports shall be sent in a timely manner listing loan
        level detail of payments and balances, and all other data required by
        the servicing agreements.

V.   INSURANCE POLICIES

     1. A fidelity bond and errors and omissions policy shall be in effect on
        the servicing entity in the amount of coverage represented to investors
        in management's assertion.

VI.  MONITORING OF SUBSERVICER COMPLIANCE

     1. Within 120 days of a subservicer's year-end, the subservicer's
        management assertions about compliance with minimum servicing standards,
        which were derived form the Mortgage Bankers Association of America's
        Uniform Single Attestation Program for Mortgage Bankers, and the
        Independent Auditors Report on management's assertions shall be
        reviewed, and if material exceptions are found, appropriate corrective
        action will be taken.

     2. An annual certification from each subservicer stating that the
        subservicer is in compliance with its subservicer agreement shall be
        obtained by April 30th for the previous calendar year.





  EX-99.1 (b)
(logo) ERNST & YOUNG

* Ernst & Young LLP
  Suite 3900
  200 South Biscayne Boulevard
  Miami, Florida 33131-5313

* Phone: (305) 358-4111
  www.ey.com



Report of Independent Certified Public Accountants

To LNR Partners, Inc.

We have examined management's assertion, included herein, that LNR Partners,
Inc. (the Company) complied with the minimum servicing standards set forth in
the Mortgage Bankers Association of America's Uniform Single Attestation Program
for Mortgage Bankers (USAP) during the year ended December 31, 2005.  Management
is responsible for the Company's compliance with those requirements.  Our
responsibility is to express an opinion on management's assertion about the
Company's compliance based on our examination.

Our examination was made in accordance with attestation standards established by
the American Institute of Certified Public Accountants and, accordingly,
included examining, on a test basis, evidence about the Company's compliance
with those requirements and performing such other procedures as we considered
necessary in the circumstances.  We believe that our examination provides a
reasonable basis for our opinion.  Our examination does not provide a legal
determination on the Company's compliance with specified requirements.


In our opinion, management's assertion that the Company complied with the
aforementioned requirements during the year ended December 31, 2005 is fairly
stated, in all material respects.

/s/ Ernst & Young LLP


March 3, 2006





A Member Practice of Ernst & Young Global

[PAGE]

Mortgage Bankers Association of America

Uniform Single Attestation Program for Mortgage Bankers

Minimum Servicing Standards Applicable to
LNR Partners, Inc. as Special Servicer for

CSFB 2005-C1


<TABLE>
<S>                                                                            <C>            <C>
                                                                                                 Not
Minimum Servicing Standards                                                    Applicable     Applicable

I.   Custodial Bank Accounts

     1. Reconciliations shall be prepared on a monthly basis for all
        custodial bank accounts and related bank clearing accounts.                               X

     2. Funds of the servicing entity shall be advanced in cases where
        there is an overdraft in an investor's or a mortgagor's account.                          X

     3. Each custodial account shall be maintained at a federally
        insured depository institution in trust for the applicable                                X
        investor.

     4. Escrow funds held in trust for a mortgagor shall be returned to
        the mortgagor within thirty (30) calendar days of payoff of the                           X
        mortgage loan.

II.  Mortgage Payments

     1. Mortgage payments shall be deposited into the custodial bank
        accounts and related bank clearing accounts within two                                    X
        business days of receipt.

     2. Mortgage payments made in accordance with the mortgagor's
        loan documents shall be posted to the applicable mortgagor                                X
        records within two business days of receipt.

     3. Mortgage payments shall be allocated to principal, interest,
        insurance, taxes or other escrow items in accordance with the              X
        mortgagor's loan documents.


     4. Mortgage payments identified as loan payoffs shall be
        allocated in accordance with the mortgagor's loan documents.               X





1

[PAGE]

                                                                                                 Not
Minimum Servicing Standards                                                    Applicable     Applicable

III. Disbursements

     1. Disbursements made via wire transfer on behalf of a mortgagor
        or investor shall be made only by authorized personnel.                                   X

     2. Disbursements made on behalf of mortgagor or investor shall be
        posted within two business days to the mortgagor's or investor's                          X
        records maintained by the servicing entity.

     3. Tax and insurance payments shall be made on or before the
        penalty or insurance policy expiration dates, as indicated on tax
        bills and insurance premium notices, respectively, provided that                          X
        such support has been received by the servicing entity at least
        thirty (30) calendar days prior to these dates.

     4. Any late payment penalties paid in conjunction with the payment
        of any tax bill or insurance premium notice shall be paid from
        the servicing entity's funds and not charged to the mortgagor,                            X
        unless the late payment was due to the mortgagor's error or
        omision.

     5. Amounts remitted to investors per the servicer's investor reports
        shall agree with canceled checks, or other form of payment, or                            X
        custodial bank statements.

     6. Unused checks shall be safeguarded so as to prevent
        unauthorized access.                                                                      X

IV.  Investor Accounting and Reporting

     1. The servicing entity's investor reports shall agree with or
        reconcile to investos' records on a monthly basis as to the total
        unpaid principal balance and number of loans serviced by the               X
        servicing entity.

V.   Mortgagor Loan Accounting

     1. The servicing entity's mortgage loan records shall agree with, or
        reconcile to, the records of mortgagors with respect to the unpaid                        X
        principal balance on a monthly basis.

     2. Adjustments on ARM loans shall be computed based on the
        related mortgage note and any ARM rider.                                                  X

     3. Escrow accounts shall be analyzed, in accordance with the
        mortgagor's loan documents, on at least an annual basis.                                  X



2

[PAGE]

                                                                                                 Not
Minimum Servicing Standards                                                    Applicable     Applicable

V.   Mortgagor Loan Accounting (continued)

     4. Interest on escrow accounts shall be paid, or credited, to
        mortgagors in accordance with the applicable state laws. (A
        compilation of state laws relating to the payment of interest on                          X
        escrow accounts may be obtained through the MBA's FAX ON
        DEMAND service. For more information, contact MBA.)

VI.  Delinquencies

     1. Records documenting collection efforts shall be maintained
        during the period a loan is in default and shall be updated at least
        monthly. Such records shall describe the entity's activities in
        monitoring delinquent loans including, for example, phone calls,           X
        letters and mortgage payment rescheduling plans in cases where
        the delinquency is deemed temporary (e.g., illness or
        unemployment).

VII. Insurance Policies

     1. A fidelity bond and errors and omissions policy shall be in effect
        on the servicing entity throughout the reporting period in the
        amount of coverage represented to investors in management's                X
        assertion.
</TABLE>





3





  EX-99.2 (a)
Exhibit I


Management's Assertion Concerning Compliance
With Minimum Master Servicing Standards

February 27, 2006

As of and for the year ended December 31, 2005, for the master servicing
transactions included in Exhibit II, GMAC Commercial Mortgage Corporation has
complied, in all material respects, with the applicable minimum master servicing
standards set forth in the company's Master Servicing Policy (attached in
Exhibit (II). which were derived from the Mortgage Bankers Association of
America's Uniform Single Attestation Program for Mortgage Bankers, except with
respect to the requirement that reconciling items shall be resolved within
ninety (90) calendar days of identification, for, which the company was not in
compliance.

As of December 31, 2005, the company was covered by various General Motors
Corporation insurance policies providing $350 million of Fidelity bond insurance
and S100 million of errors and omissions insurance.



/s/ Robert D. Feller
Robert D. Feller
Chief Executive Officer


/s/ Michael I. Lipson
Michael I. Lipson
Executive Vice President, Global Servicing



/s/ Wayne D. Hoch
Wayne D. Hoch
Executive Vice President and Chief Financial Officer

[PAGE]

Exhibit II

GMAC COMMERCIAL MORTGAGE CORPORATION
TRANSACTIONS ASSOCIATED WITH MASTER SERVICING
RESPONSIBILITIES

ACMF I SERIES 1997-Cl
AETNA SERIES 1995-C5
AMERICAN SOUTHWEST SERIES 1993-2
ASC SERIES 1996-D3
ASC SERIES 1997-D4
ATHERTON 1997-1
ATHERTON 1998-A
ATHERTON 1999-A
ATHERTON WAREHOUSE -AW960I
ATHERTON-PW WAREHOUSE
BACM 2001-Cl
BANK OF AMERICA 2002-XI
BKB SERIES 1997-Cl (LB)
CALSTERS 2002 C6
CALWEST 2003-CALW
CAPCO SERIES 1998-D7
CCMSC 2001-245 PRK AVE
CDC 2002-FX1
CDO SERIES 2004-1
CG SERIES 2005-EMG
CGMT SERIES 2004-FLI
CHASE SERIES 1996-1
CHASE SERIES 1996-2
CHASE SERIES 1997-1
CHASE SERIES 1997-2
CHASE SERIES 1998-2
CHASE SERIES 2000-FL I
CHASE-FIRST UNION 1999-1
CITICORP LEASE TRUST 1999-1
COLUMN SERIES 2002 CCL1
COMM 2001-J2
COMM 2003-LNB1
COMM 2005-FL11
COMM SERIES 2001-FL5
COMM SERIES 2004-LNB2
COMM SERIES 2004-LNB4
COMM SERIES 2005-C6
CREST GSTAR 2001-1
CSFB SERIES 1995-M1
CSFB SERIES 1997-PS1
CSFB SERIES 1998-PS2
CSFB SERIES 1999-PS3
CSFB SERIES 2000-C1
CSFB SERIES 2000-PS4
CSFB SERIES 2001-CF2

[PAGE]

CSFB SERIES 2001-SPG1
CSFB SERIES 2005-C1
CSFB SERIES 2005-05
DAIWA 1993-1
DLJ SERIES 1996-CF1
DLJ SERIES 1997-CF1
EDI
EDII
EMAC 1998
EMAC 1999
EMAC 2000
FMAC 1991-A
FMAC 1993-B
FMAC 1994-A
FMAC 1995-B
FMAC 1996-B
FMAC 1997-A
FMAC 1997-B
FMAC 1997-C
FMAC 1998-A
FMAC 1998-B
FMAC 1998-C
FMAC 1998-D
FMAC 2000-A
FMHA
FNMA SERIES 1998-M1
FOREST CITY 1994-1
FREEHOLD RACEWAY
G3 STRATEGIC INV 2002-WL1
GCCF SERIES 2005-GG3
GFCM 2003-1
GGP MALL PROP TR-SERIES 2001-GGP1
GMACCM SERIES 1996-C1
GMACCM SERIES 1997-C1
GMACCM SERIES 1997-C2
GMACCM SERIES 1998-C1
GMACCM SERIES 1998-C2
GMACCM SERIES 1999-C1
GMACCM SERIES 1999-C2
GMACCM SERIES 1999-C3
GMACCM SERIES 1999-CTL1
GMACCM SERIES 2000-C1
GMACCM SERIES 2000-C2
GMACCM SERIES 2000-C3
GMACCM SERIES 2000-FL1
GMACCM SERIES 2000-FL-F
GMACCM SERIES 2001-A
GMACCM SERIES 2001-C1
GMACCM SERIES 2001-C2
GMACCM SERIES 2001-FL1
GMACCM SERIES 2002-C1

[PAGE]

GMACCM SERIES 2002-C2
GMACCM SERIES 2002-C3
GMACCM SERIES 2002-FL1
GMACCM SERIES 2003 SENIORS
GMACCM SERIES 2003-C1
GMACCM SERIES 2003-C2
GMACCM SERIES 2003-C3
GMACCM SERIES 2003-FL1
GMACCM SERIES 2003-FLA
GMACCM SERIES 2003-FL-SNF
GMACCM SERIES 2004-C1
GMACCM SERIES 2004-C2
GMACCM SERIES 2004-C3
GMACCM SERIES 2005-C1
G-MAX 2002-FLA
GMAX 2002-FX-1
GOLDMAN SACHS SERIES 1997-GLI
GOLDMAN SACHS SERIES 1998-C1
GOLDMAN SACHS SERIES 1998-GLII
GOLDMAN SACHS SERIES 1999-C1
GOLDMAN SACHS SERIES 2001-1285
GOLDMAN SACHS SERIES 2001-GL3
GOLDMAN SACHS SERIES 2001-ROCK
GOLDMAN SACHS SERIES 2002-GSFL V
GOLDMAN SACHS SERIES 2003-C1
GOLDMAN SACHS SERIES 2005-GG4
GOLDMAN SACHS SERIES 2005-GSFL VII
HEALTHFUND 1999-1
HUD
IPS 2005-1
JP MORGAN CHASE SERIES 2001-A
JP MORGAN CHASE SERIES 2001-CIBC1
JP MORGAN CHASE SERIES 2002-C3
JP MORGAN CHASE SERIES 2004-C1
JP MORGAN CHASE SERIES 2004-C2
JP MORGAN CHASE SERIES 2004-CIBC10
JP MORGAN CHASE SERIES 2004-CIBC8
JP MORGAN CHASE SERIES 2004-CIBC9
JP MORGAN CHASE SERIES 2004-LN2
JP MORGAN CHASE SERIES 2005-CIBC11
JP MORGAN CHASE SERIES 2005-CIBC12
JP MORGAN CHASE SERIES 2005-LDP3
JP MORGAN CHASE SERIES 2005-LDP4
JP MORGAN CHASE SERIES 2005-LDP5
LEHMAN BROTHERS SERIES 1992-2
LEHMAN BROTHERS SERIES 1992-1
LEHMAN BROTHERS SERIES 1995-C2
LEHMAN BROTHERS SERIES 1996-C2
LEHMAN BROTHERS SERIES 1998-C1
LIBRARY TOWER 1998-1
LK94C2

[PAGE]

LONG LANE MASTER TRUST IV
LTC SERIES 1998-1
MCF 1996-MC2 (NATIONS)
MCF SERIES 1996-MC1
MCF SERIES 1998-MC1
MCF SERIES 1998-MC3
MERRILL LYNCH SERIES 1995-C3
MERRILL LYNCH SERIES 1996-C1
MERRILL LYNCH SERIES 1997-C1
MERRILL LYNCH SERIES 1998-C1-CTL
MERRILL LYNCH SERIES 1999 C2
MERRILL LYNCH SERIES 2000 CANADA 3
MERRILL LYNCH SERIES 2000-C4
MERRILL LYNCH SERIES 2001-C5
MERRILL LYNCH SERIES 2002-BC2P
MERRILL LYNCH SERIES 2002-C7
MERRILL LYNCH SERIES 2002-C8
MERRILL LYNCH SERIES 2003 C-11
MERRILL LYNCH SERIES 2003-C10
MERRILL LYNCH SERIES 2003-C9
MERRILL LYNCH SERIES SERIES 2000-BELL MOBILITY
MERRILL LYNCH SERIES 2005-LC1
MORGAN STANLEY SERIES 1996-C1
MORGAN STANLEY SERIES 1997-C1
MORGAN STANLEY SERIES 1997-XL1
MORGAN STANLEY SERIES 1998-CF1
MORGAN STANLEY SERIES 1998-HF1
MORGAN STANLEY SERIES 1998-HF2
MORGAN STANLEY SERIES 1999-RM1
MSDW SERIES 1997-HF1
MSDW SERIES 1999-FNV1
MSDW SERIES 2001-IQ
MSDW SERIES 2001-PPM
MSDW SERIES 2002-HQ
MSDW SERIES 2002-IQ3
MSDW SERIES 2002-WM
MSDW SERIES 2003-IQ4
MSDW SERIES 2003-IQ5
MSDW SERIES 2003-IQ5 - B&B NOTES
MSDW SERIES 2005- IQ-10
NATIONS LINK SERIES 1996-1
NEW ENGLAN MUTUAL
NOMURA SERIES 1993 1 (HM9301)
NOMURA SERIES 1995 MD IV
NOMURA SERIES 1996 MD V
NOMURA SERIES 1996 MD VI
NOMURA SERIES 1998-D6
OREGON SERIES 1995-1
PAINE WEBBER 1996-13
PRUDENTIAL SECURITIES CREDIT
REAL - T SERIES 2004-1

[PAGE]

SALOMON BROTHERS SERIES 1999-C1
SALOMON BROTHERS SERIES 2000-C1
SASCO SERIES 1997-LL1
SDG MACERICH (CMO)
SL COMMERCIAL 1997 C1
SOLAR TRUST SERIES 2001-1
SOLAR TRUST SERIES 2002-1
SOLAR TRUST SERIES 2003-CC1
U-HAUL SERIES 1993-1
USGI 1992-1

[PAGE]

Exhibit III

GMAC COMMERCIAL MORTGAGE CORPORATION
MINIMUM MASTER SERVICING POLICY

I.   CUSTODIAL BANK ACCOUNTS

     1. Reconciliations shall be prepared on a monthly basis for all custodial
        bank accounts and related bank clearing accounts. These reconciliations
        shall:

        * be mathematically accurate;

        * be prepared within forty-five (45) calendar days after the cutoff
          date, but in any event in accordance with the applicable servicing
          agreements;

        * be reviewed and approved by someone other than the person who prepared
          the reconciliation; and

        * evidence explanations for reconciling items which shall be resolved
          within ninety (90) calendar days of identification.

     2. Funds of the servicing entity shall be advanced as specified in the
        applicable servicing agreements in cases where there is potential for an
        overdraft in an investor's account or a request letter has been received
        from a subservicer for a servicing advance stipulated by the
        subservicing agreement.

     3. All cash for each custodial account shall be maintained at a federally
        insured depository institution in trust for the applicable investor or
        in an investment account in accordance with the applicable servicing
        agreement requirements.

II.  MORTGAGE PAYMENTS

     1. Mortgage payments shall be deposited into the custodial bank accounts
        and related bank clearing accounts within two business days of receipt
        from the subservicer.

     2. Mortgage payments made in accordance with the mortgagor's loan documents
        shall be posted to the applicable mortgagor records within two business
        days of receipt from the subservicer.

III. DISBURSEMENTS

     1. Remittances made via wire transfer on behalf of a mortgagor or investor
        shall be made only by authorized personnel.

     2. Amounts remitted to investors per the servicer's investor reports shall
        agree with cancelled checks, or other form of payment, or custodial bank
        statements.

[PAGE]

IV.  INVESTOR ACCOUNTING AND REPORTING

     1. Monthly investor reports shall be sent in a timely manner listing loan
        level detail of payments and balances, and all other data required by
        the servicing agreements.

V.   INSURANCE POLICIES

     1. A fidelity bond and errors and omissions policy shall be in effect on
        the servicing entity in the amount of coverage represented to investors
        in management's assertion.

VI.  MONITORING OF SUBSERVICER COMPLIANCE

     1. Within 120 days of a subservicer's year-end, the subservicer's
        management assertions about compliance with minimum servicing standards,
        which were derived form the Mortgage Bankers Association of America's
        Uniform Single Attestation Program for Mortgage Bankers, and the
        Independent Auditors Report on management's assertions shall be
        reviewed, and if material exceptions are found, appropriate corrective
        action will be taken.

     2. An annual certification from each subservicer stating that the
        subservicer is in compliance with its subservicer agreement shall be
        obtained by April 30th for the previous calendar year.





  EX-99.2 (b)
(logo)LNR
 Partners, Inc.


March 13, 2006


Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045
Attention: Corporate Trust Office
           CS First Boston, Series 2005-C1

Re: Annual Independent Public Accountant's Servicing Report
    Pooling and Servicing Agreement
    Credit Suisse First Boston Mortgage Securities Corp. Commercial Mortgage
    Pass-Through Certificates, Series 2005-C1

To Whom It May Concern:

As of and for the year ended December 31, 2005, LNR Partners, Inc. has complied
in all material respects with the applicable minimum servicing standards set
forth in the Mortgage Bankers Association of America's Uniform Single
Attestation Program for Mortgage Bankers applicable to the commercial and
multifamily mortgages for the Special Servicer as noted in the attachment to
this assertion. As of and for this same period, LNR Partners, Inc. had in effect
a fidelity bond in the amount of $10,000,000 and an errors and omissions policy
in the amount of $10,000,000.

Sincerely,

LNR PARTNERS, INC.


/s/ Susan K. Chapman
Susan K. Chapman
Vice President


cc: GMAC Commercial Mortgage Corp.
    200 Witmer Road
    Horsham, PA 19044
    Mark McCool, Sr.Vice President, Managing Director





1601 Washington Avenue * Suite 700 * Miami Beach, Florida 33139
Telephone: (305) 695-5600 * Fax: (305) 695-5601

[PAGE]

CSFB 2005-C1
March 13, 2006
Page 2



Credit Suisse
11 Madison Avenue, 5th Floor
New York, NY 10010
Edmund Taylor

Moody's Investors Service Inc.
99 Church Street
New York, NY 10007
Commercial MBS Monitoring Dept.

Fitch, Inc.
Commercial Mortgage Surveillance
New York, NY 10004
One State Street Plaza, 31st Floor, 31st Floor

CBA Mezzanine Capital Finance, LLC
51 JFK Parkway, 4th Floor East
Short Hills, NJ 07078
Martin T. Lanigan





  EX-99.3 (a)
(logo)GMAC
Commercial Mortgage




Annual Statement as to Compliance
For the Year Ended December 31, 2005

CSFB
Series 2005-Cl


Pursuant to Section 3.13 of the Pooling and Servicing Agreement governing the
referenced transaction, I hereby attest that:

  i. A review of the activities of GMAC Commercial Mortgage Corporation as
     Master Servicer during the period, and of its performance under this Trust
     and Servicing Agreement, has been made under my supervision.

 ii. To the best of my knowledge, based on such review, GMAC Commercial Mortgage
     Corporation as Master Servicer, has fulfilled in all material respects its
     obligations under this Pooling and Servicing Agreement throughout the
     period.

iii. GMAC Commercial Mortgage Corporation, as Master Servicer, has received no
     notice regarding qualifications, or challenging the status, of any REMIC
     Pool as a REMIC or the status of either Grantor Trust Pool as a Grantor
     Trust or otherwise asserting a tax on the income or assets of any portion
     of the Trust Fund from the Internal Revenue Service or any other
     governmental agency or body.

GMAC COMMERCIAL MORTGAGE CORPORATION


/s/ Mark E.McCool


By:    Mark E. McCool
Title: Senior Vice President
Date:  February 20, 2006



Inv. 821 A




200 Witmer Road - P.O. Box 1015 - Horsham, PA 19044-8015





  EX-99.3 (b)
CERTIFICATE OF OFFICER
OF
LNR PARTNERS, INC.

Pooling and Servicing Agreement
dated as of March 1, 2005 (the "Agreement"), by and among
Credit Suisse Mortgage Securities Corporation, as Depositor, GMAC Commercial
Mortgage Corp. as Master Servicer, Wells Fargo Bank, N. A., as Trustee,
and LNR Partners, Inc., as Special Servicer
(CSFB 2005-C1)


The undersigned, Susan K. Chapman, as Vice President of LNR Partners, Inc., a
Florida Corporation (the "Company"), in accordance with Section 3.13 of the
Agreement, does hereby certify on behalf of the Company that a review of the
servicing operations of the Company during the year ended December 31, 2005 and
its performance under the Agreement has been made under my supervision and to
the best of my knowledge, based on such review, the Company has fulfilled all of
its obligations under the Agreement in all material respects throughout such
period ended December 31, 2005; and there has been no material default in the
performance of our obligations under the Agreement.  The Company has not
received notice regarding qualification, or challenging the status, of any REMIC
Pool as a REMIC or the Grantor Trust Pool as a Grantor Trust from the IRS or any
other governmental agency or body.

IN WITNESS WHEREOF, the undersigned has executed and delivered this Certificate
as of the 1st day of March, 2006.



/s/ Susan K. Chapman
Susan K. Chapman
Vice President
LNR Partners, Inc.





  Ex-99.4

   Schedule of Year-To-Date Principal and Interest Distributions to
   Certificateholders


   <TABLE>

   Class                              Interest             Principal               Losses             Ending Balance
   
                       <c>                    <c>                  <c>                 <c>
   A-1                            3,581,897.33          8,785,381.28                 0.00             104,955,618.72
   A-2                            4,338,221.22                  0.00                 0.00             125,500,000.00
   A-3                            6,555,522.60                  0.00                 0.00             181,606,000.00
   A-4                           25,358,818.95                  0.00                 0.00             674,347,000.00
   A-AB                           4,084,323.75                  0.00                 0.00             113,100,000.00
   A-J                            3,521,161.89                  0.00                 0.00              92,510,000.00
   A-SP                           5,475,106.04                  0.00                 0.00           1,426,004,000.00
   A-X                              624,557.62                  0.00                 0.00           1,501,582,455.08
   B                              1,668,745.89                  0.00                 0.00              43,423,000.00
   C                                509,873.31                  0.00                 0.00              13,216,000.00
   D                                957,729.24                  0.00                 0.00              24,543,000.00
   E                                749,347.20                  0.00                 0.00              18,880,000.00
   F                                750,882.78                  0.00                 0.00              20,767,000.00
   G                                562,435.20                  0.00                 0.00              15,104,000.00
   H                                765,251.99                  0.00                 0.00              18,880,000.00
   J                                206,203.95                  0.00                 0.00               5,663,000.00
   K                                206,240.40                  0.00                 0.00               5,664,000.00
   L                                206,240.40                  0.00                 0.00               5,664,000.00
   LR                                     0.00                  0.00                 0.00                       0.00
   M                                206,240.40                  0.00                 0.00               5,664,000.00
   N                                206,240.40                  0.00                 0.00               5,664,000.00
   O                                137,493.63                  0.00                 0.00               3,776,000.00
   P                                823,659.57                  0.00                 0.00              22,655,836.36
   R                                      0.00                  0.00                 0.00                       0.00
   V                                      0.00                  0.00                 0.00                       0.01
   </TABLE>