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, 2004

      OR



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


      Commission File Number:  333-115858-09


      Structured Asset Securities Corporation


     (Exact name of registrant as specified in its charter)


   Delaware                 		              74-2440850
  (State or other jurisdiction of                    (I.R.S. Employer
   incorporation or organization)                    Identification No.)




   745 Seventh Avenue, 7th Floor
   New York, NY                                10019
  (Address of principal executive offices)     (Zip Code)


  Registrant's telephone number, including area code: (212) 526-7000

        Structured Asset Investment Loan Trust
        Mortgage Pass-Through Certificates
        Series 2004-BNC1


  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 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 an accelerated filer
  (as defined in Exchange Act Rule 12b-2).

        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.


  Indicate the number of shares outstanding of each of the registrant's
  classes of common stock, as of the latest practicable date.

        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 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 Servicer or the
            registrant with respect to the Trust.


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

            No matter was submitted to a vote or consent of the holders
	    of each class of offered certificates during the fiscal year
	    covered by this report.

                                PART II

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


            The Trust does not issue stock. No established public trading
            market for the Certificates exists.

            As of December 31, 2004, the total number of holders
            of record for the Series of Certificates is 20.


  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.

            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)(1) Financial Statements

            Not applicable.

   (a)(2) Financial Statement Schedules

	    Not applicable.


   (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) Chase Manhattan Mortgage Corporation, as Servicer <F1>
      b) Option One Mortgage Corporation, as Servicer <F1>
      c) Wells Fargo Bank, N.A., as Servicer <F1>

      </TABLE>

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

      <TABLE>

      
        <c>
      a) Chase Manhattan Mortgage Corporation, as Servicer <F1>
      b) Option One Mortgage Corporation, as Servicer <F1>
      c) Wells Fargo Bank, N.A., as Servicer <F1>

      </TABLE>

     (99.3) Annual Statements of Compliance under the Trust
            Agreements.

      <TABLE>

      
         <c>
      a) Aurora Loan Services LLC fka Aurora Loan Services Inc., as
      Master Servicer <F1>

      </TABLE>


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


   (b) Exhibits to this report are listed on Item 15(a)(3) above.

   (c) Not applicable.


  <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:



    Structured Asset Investment Loan Trust
    Mortgage Pass-Through Certificates
    Series 2004-BNC1
    (Registrant)


  Signed: Aurora Loan Services LLC fka Aurora Loan Services Inc. as
  Master Servicer

  By:     E. Todd Whittemore, Executive Vice President

  By: /s/ E. Todd Whittemore, Executive Vice President

  Dated: March 29, 2005


  SUPPLEMENTAL INFORMATION TO BE FURNISHED WITH REPORTS FILED PURSUANT TO
  SECTION 15(d) OF THE ACT BY REGISTRANTS WHICH HAVE NOT REGISTERED
  SECURITIES PURSUANT TO SECTION 12 OF THE ACT.


  (a)(i) No annual report is provided to the Certificateholders other than
  with respect to aggregate principal and interest distributions.


  (a)(ii) No proxy statement, form of proxy or other proxy soliciting
  material has been sent to any Certificateholder with respect to any
  annual or other meeting of Certificateholders.



  Exhibit Index

  Exhibit No.

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

  I, E. Todd Whittemore, certify that:

  1. I have reviewed this annual report on Form 10-K, and all reports on
     Form 8-K containing distribution or servicing reports filed in
     respect of periods included in the year covered by this annual report
     , of Structured Asset Investment Loan Trust Mortgage Pass-Through
     Certificates, Series 2004-BNC1 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 distribution or servicing information
     required to be provided to the Trustee by the Servicer under the
     Pooling and Servicing or similar, 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, or similar,
     agreement, and except as disclosed in the reports, the servicer has
     fulfilled its obligations under the servicing agreement; and

  5. The reports disclose all significant deficiencies relating to the
     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 procedure, as set forth in
     the pooling and servicing, or similar, 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:
     Chase Manhattan Mortgage Corporation as Servicer, Option One Mortgage
     Corporation as Servicer, Wells Fargo Bank, N.A. as Servicer and
     Securities Administrator.

     Date: March 29, 2005

     /s/ E. Todd Whittemore
     Signature

     Executive Vice President
     Title


  EX-99.1 (a)
(logo) PRICEWATERHOUSECOOPERS

PricewaterhouseCoopers LLP
PricewaterhouseCoopers Center
300 Madison Avenue
New York NY 10017
Telephone (646) 471 3000
Facsimile (813) 286 6000



Report of Independent Auditors


To the Board of Directors and Stockholder
of Chase Home Finance LLC:


We have examined management's assertion about Chase Home Finance LLC's
(formerly known as Chase Manhattan Mortgage Corporation) (the "Company")
compliance with the minimum servicing standards identified in the Mortgage
Bankers Association of America's Uniform Single Attestation Program for
Mortgage Bankers ("USAP") as of and for the year ended December 31, 2004
included in the accompanying management assertion (see Exhibit I). Management
is responsible for the Company's compliance with those minimum servicing
standards. 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 the minimum servicing standards 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 the minimum servicing
standards.


In our opinion, management's assertion that the Company complied with the
aforementioned minimum servicing standards as of and for the year ended
December 31, 2004 is fairly stated, in all material respects.


/s/ PricewaterhouseCoopers LLP

March 11, 2005


(logo) JPMorganChase


Exhibit I


Management's Assertion Concerning Compliance
with USAP Minimum Servicing Standards


March 11, 2005


As of and for the year ended December 31, 2004, Chase Home Finance LLC
(formerly known as Chase Manhattan Mortgage Corporation) (the "Company") has
complied in all material respects with the minimum servicing standards
(the "Standards") set forth in the Mortgage Bankers Association of America's
Uniform Single Attestation Program for Mortgage Bankers ("USAP"). These
Standards are applicable only to the Company's prime and subprime mortgage
portfolios.

As of and for this same period, the Company had in effect fidelity bond and
errors and omissions policies in the amounts of $250,000,000 and $25,000,000
respectively.



/s/ Thomas L. Wind
Thomas L. Wind
Co-Chief Executive Officer
Chase Home Finance LLC


/s/ Scott Powell
Scott Powell
Co-Chief Executive Officer
Chase Home Finance LLC


/s/ Terry L. Gentry
Terry L. Gentry
SVP of Servicing
Chase Home Finance LLC





  EX-99.1 (b)
(logo) KPMG

KPMG LLP
Suite 2000
355 South Grand Avenue
Los Angeles, CA 90071-1568


Independent Accountants' Report


The Board of Directors and Stockholder

Option One Mortgage Corporation


We have examined management's assertion, included in the accompanying
management assertion, that Option One Mortgage Corporation complied with the
minimum servicing standards set forth in the Mortgage Bankers Association of
America's Uniform Single Attestation Program for Mortgage Bankers as of and for
the year ended December 31, 2004. Management is responsible for Option One
Mortgage Corporation's compliance with those minimum servicing standards. Our
responsibility is to express an opinion on management's assertion about the
Company's compliance based on our examination.

Our examination was conducted in accordance with attestation standards
established by the American Institute of Certified Public Accountants and,
accordingly, included examining, on a test basis, evidence about Option One
Mortgage Corporation's compliance with the minimum servicing standards specified
above 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 Option
One Mortgage Corporation's compliance with the minimum servicing standards.

In our opinion, management's assertion that Option One Mortgage Corporation
complied with the aforementioned minimum servicing standards as of and for the
year ended December 31, 2004 is fairly stated, in all material respects.

/s/ KMPG LLP


Los Angeles, California
February 28, 2005



KPMG LLP, a U.S. limited liability partnership, is the U.S.
member firm of KPMG international a Swiss cooperative.





  EX-99.1 (c)
(logo) KPMG


KPMG LLP
2500 Ruan Center
666 Grand Avenue
Des Moines, IA 50309


Independent Accountants' Report

The Board of Directors
Wells Fargo Home Mortgage, a division of Wells Fargo Bank, N.A.:


We have examined management's assertion, included in the accompanying
Assertion of Management of Wells Fargo Home Mortgage, a division of Wells
Fargo Bank, N.A. (the Company), that 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) as
of and for the year ended December 31, 2004. Management is responsible for
the Company's compliance with those minimum servicing standards. Our
responsibility is to express an opinion on management's assertion about the
Company's compliance based on our examination.


Our examination was conducted 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 the minimum servicing standards specified above
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 the minimum servicing standards.


In our opinion, management's assertion that the Company complied with the
aforementioned minimum servicing standards as of and for the year ended
December 31, 2004 is fairly stated, in all material respects.


/s/ KPMG LLP


February 23, 2005






  EX-99.2 (a)
(logo) JPMorganChase


Exhibit I


Management's Assertion Concerning Compliance
with USAP Minimum Servicing Standards


March 11, 2005


As of and for the year ended December 31, 2004, Chase Home Finance LLC
(formerly known as Chase Manhattan Mortgage Corporation) (the "Company") has
complied in all material respects with the minimum servicing standards
(the "Standards") set forth in the Mortgage Bankers Association of America's
Uniform Single Attestation Program for Mortgage Bankers ("USAP"). These
Standards are applicable only to the Company's prime and subprime mortgage
portfolios.

As of and for this same period, the Company had in effect fidelity bond and
errors and omissions policies in the amounts of $250,000,000 and $25,000,000
respectively.



/s/ Thomas L. Wind
Thomas L. Wind
Co-Chief Executive Officer
Chase Home Finance LLC


/s/ Scott Powell
Scott Powell
Co-Chief Executive Officer
Chase Home Finance LLC


/s/ Terry L. Gentry
Terry L. Gentry
SVP of Servicing
Chase Home Finance LLC





  EX-99.2 (b)
(logo) OPTION ONE
       MORTGAGE

(logo) H&R BLOCK
an H&R Block company


Management Assertion


As of and for the year ended December 31, 2004, Option One Mortgage Corporation
complied in all material respects with the minimum servicing standards set forth
in the Mortgage Bankers Association of America's Uniform Single Attestation
Program for Mortgage Bankers. As of and for this same period, Option One
Mortgage Corporation had in effect a fidelity bond and errors and omissions
policy in the amounts of $30,000,000 and $10,000,000, respectively.



/s/ Robert E. Dubrish
Robert E. Dubrish, Chief Executive Officer


/s/ William L. O'Neill
William L. O'Neill, Chief Financial Officer


/s/ Matthew A. Engel
Matthew A. Engel, Controller


/s/ John A. Vella
John A. Vella, Chief Servicing Officer





  EX-99.2 (c)
(logo) Wells Fargo Home Mortgage

1 Home Campus
Des Moines, IA 50328


Assertion of Management of Wells Fargo Home Mortgage, a division of Wells
Fargo Bank, N.A




As of and for the year ended December 31, 2004, Wells Fargo Home Mortgage, a
division of Wells Fargo Bank, N.A. (the Company) has complied in all material
respects with the minimum servicing standards set forth in the Mortgage
Bankers Association of America's Uniform Single Attestation Program for
Mortgage Bankers.

As of and for this same period, the Company had in effect a fidelity bond
along with an errors and omissions policy in the amounts of $100 million and
$20 million, respectively.


/s/ Michael J. Heid
February 23, 2005
Michael J. Heid, Division President, Capital Markets, Finance, & Administration
Wells Fargo Home Mortgage, a division of Wells Fargo Bank, N.A.


/s/ Franklin R. Codel
February 23. 2005
Franklin R. Codel, Executive Vice President, Finance and Corporate Real Estate
Wells Fargo Home Mortgage, a division of Wells Fargo Bank, N.A.


/s/ Michael Lepore
February 23. 2005
Michael Lepore, Executive Vice President, Institutional Lending
Wells Fargo Home Mortgage, a division of Wells Fargo Bank, N.A.


/s/ Mary Coffin
February 23, 2005
Mary Coffin, Executive Vice President, Servicing & Post Closing
Wells Fargo Home Mortgage, a division of Wells Fargo Bank, N.A.



Wells Fargo Home Mortgage
Is a division of Wells Fargo Bank, N.A.






  EX-99.3 (a)
AURORA LOAN SERVICES
A Lehman Brothers Company


Via UPS

February 25, 2005

Carla Shedrick
Corporate Trust Services
Wells Fargo Bank Minnesota, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

RE: Annual Officer's Certificate as to Compliance (Securitization listing on the
    attached Exhibit A)

Dear Ms. Shedrick:

The undersigned Officer certifies the following for the period ending on
December 31, 2004:

1. I have reviewed the activities and performance of the Master Servicer during
the preceding calendar year under the terms of the Trust Agreements and to the
best of this Officer's knowledge, the Master Servicer has fulfilled all of its
duties, responsibilities or obligations under the Agreements;

2. Based on said review and to the best of this Officer's knowledge, the Master
Servicer is not in default of its obligations under the terms of the Trust
Agreements in any material respect, or, if there is a default in the
fulfillment of its obligations, a description of each default or failure and
the nature and status thereof has been reported to this Officer;

3. To the best of this Officer's knowledge, nothing has arose to lead this
Officer to believe that its Servicer has failed to perform any of its
duties, responsibilities and obligations under its Servicing Agreement
during the preceding calendar year;

4. To the best of this Officer's knowledge, the Servicer is not in default of
its obligations under the terms of its Servicing Agreement in any material
respect, or, if there is a default in the fulfillment of its obligations, a
description of each default or failure and the nature and status thereof has
been reported to this Officer;

5. The Master Servicer has received from its Servicer such Servicer's annual
certificate of compliance and a copy of such Servicer's annual audit report,
in each case to the extent required under the applicable Servicing
Agreement, or, if any such certificate or report has not been received by
the Master Servicer, the Master Servicer is using its best reasonable
efforts to obtain such certificate or report.

Certified By:

/s/ R. Peter Karr

R. Peter Karr
Senior Vice President
Master Servicing Division

Cc: Greg Anselmi, Client Service Manager

(logo) EQUAL HOUSING LENDER


Exhibit A


SASCO           SARM            ARC             SAIL
2002-HF2        2004-1          2002-BC8        2003-BC3
2002-BC1        2004-4          2002-BC9        2003-BC4
2002-26         2004-5		2002-BC10	2003-BC5
2003-6A         2004-7		2004-1		2003-BC6
2003-15A        2004-9XS			2003-BC7
2003-17A        2004-10				2003-BC8
2003-22A        2004-12				2003-BC9
2003-26A        2004-14				2003-BC10
2003-34A        2004-16				2003-BC11
2003-S2         2004-18 			2003-BC12
2004-S2         2004-20				2003-BC13
2004-SC1					2004-2
2004-S3        					2004-3
						2004-4
						2004-5
						2004-6
						2004-BNC1
						2004-8
						2004-9
						2004-10
						2004-BNC2


FFMLT		LABS		Encore
2002-FF3	2004-2		2003-1
2003-FFB
2003-FF3
2004-FFA
2004-FF7








  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>
   A1                             2,522,873.60         34,032,639.74                 0.00             264,138,360.26
   A2                               689,079.68                  0.00                 0.00              69,488,000.00
   A3                             3,128,339.33         49,626,728.43                 0.00             322,637,271.57
   A4                               810,647.96                  0.00                 0.00              82,826,000.00
   A5                               214,600.37                  0.00                 0.00              20,569,000.00
   A-SIO                             32,952.47                  0.00                 0.00             873,025,132.83
   B1                                99,645.85                  0.00                 0.00               4,783,000.00
   M1                               551,631.89                  0.00                 0.00              51,183,000.00
   M2                                81,963.41                  0.00                 0.00               7,175,000.00
   M3                               171,459.95                  0.00                 0.00              13,394,000.00
   M4                               147,407.63                  0.00                 0.00              10,524,000.00
   M5                               173,050.77                  0.00                 0.00              11,002,000.00
   M6                                92,756.00                  0.00                 0.00               5,740,000.00
   M7                                88,617.69                  0.00                 0.00               4,783,000.00
   P                              1,185,039.69                  0.00                 0.00                     100.00
   R1                                     0.00                  0.00                 0.00                       0.00
   R2                                     0.00                  0.00                 0.00                       0.00
   R3                                     0.00                  0.00                 0.00                       0.00
   X                             15,227,964.44                  0.00                 0.00               4,782,401.00
   </TABLE>