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, 2007

      OR


  / / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934
      For the transition period from ____________ to ____________



      Commission file number: 333-130789-04

      Bear Stearns Commercial Mortgage Securities Trust 2007-PWR15
      (exact name of issuing entity as specified in its charter)

      Bear Stearns Commercial Mortgage Securities Inc.
      (exact name of the depositor as specified in its charter)

      Bear Stearns Commercial Mortgage, Inc.
      Prudential Mortgage Capital Funding, LLC
      Principal Commercial Funding, LLC
      Wells Fargo Bank, N.A.
      Nationwide Life Insurance Company
      Principal Commercial Funding II, LLC
      (exact name of each of the sponsors as specified in its charter)



  New York                                54-2199246
  (State or other jurisdiction of         54-2199247
  incorporation or organization of        54-2199248
  issuing entity)                         54-6740322
                                          54-6740323
                                          54-6740324
                                          54-6740325
                                          54-6740326
                                          (I.R.S. Employer
                                          Identification No. of
                                          issuing entity)


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


 Telephone number of issuing entity, 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 (Section 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, a non-accelerated filer, or a smaller reporting
  company.  See the definitions of "large accelerated filer", "accelerated
  filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

   Large accelerated filer ___
   Accelerated filer ___
   Non-accelerated filer X (Do not check if a smaller reporting company)
   Smaller reporting company ___

  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

  See Item 15 (a).



                                     PART I

  Item 1.      Business.

               Not applicable.


  Item 1A.     Risk Factors.

               Not applicable.


  Item 1B.     Unresolved Staff Comments.

               None.


  Item 2.      Properties.

               Not applicable.


  Item 3.      Legal Proceedings.

               Not applicable.


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

               Not applicable.




                                     PART II

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

               Not applicable.


  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.

               Not applicable.


  Item 9A.     Controls and Procedures.

               Not applicable.


  Item 9A(T).  Controls and Procedures.

               Not applicable.


  Item 9B.     Other Information.

               None.




                                    PART III

  Item 10.     Directors, Executive Officers and Corporate Governance.

               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, and Director
               Independence.

               Not applicable.


  Item 14.     Principal Accounting Fees and Services.

               Not applicable.




                  ADDITIONAL DISCLOSURE ITEMS FOR REGULATION AB


Item 1112(b) of Regulation AB, Significant Obligor Financial Information.

The mortgaged property securing the World Market Center II loan constitutes a
significant obligor within the meaning of 1101(k)(2) of Regulation AB.  The Net
Operating Income for the mortgaged property for the 2007 Fiscal Year End is $26,
514,457.11.



Item 1114(b)(2) of Regulation AB, Significant Enhancement  Provider Financial
Information.

No entity or group of affiliated entities provides any external credit
enhancement or other support for the certificates within this transaction as
described under Item 1114 (a) of Regulation AB.



Item 1115(b) of Regulation AB, Certain Derivatives Instruments (Financial
Information).

Bear Stearns Capital Markets Inc. provides an interest rate swap derivative
instrument for the issuing entity. No additional disclosure is necessary
because the significance percentage for the interest rate swap is less than
10%.

On March 16, 2008, JPMorgan Chase & Co. agreed to guarantee the obligations of
Bear Stearns Financial Products Inc. under the Interest Rate Swap pursuant to
the terms of the Guaranty Agreement described below in Item 1119. Additional
disclosure with respect to JPMorgan Chase & Co. can be found below in Item
1119. The significance percentage represented by the guarantee of the Interest
Rate Swap is less than 10%. Except with respect to the addition of this
guarantee, the terms and conditions of the Interest Rate Swap remain unchanged.



Item 1117 of Regulation AB, Legal Proceedings.

The registrant knows of no material pending legal proceedings involving the
issuing entity and all parties related to the issuing entity or any other
entites contemplated by Item 1117 of Regulation AB, other than routine
litigation incidental to the duties of those respective parties.



Item 1119 of Regulation AB, Affiliations and Certain Relationships and Related
Transactions.

The information regarding this Item has been previously disclosed in a 424(b)(5)
filed on  March 26, 2007 (Commission File No. 333-130789-04).

On March 16, 2008, JPMorgan Chase & Co. ("JPMorgan Chase") announced that it
had entered into an Agreement and Plan of Merger, dated March 16, 2008 (the
"Agreement and Plan of Merger"), and subsequently amended by Amendment No. 1 to
the Agreement and Plan of Merger, dated as of March 24, 2008 (such amendment,
together with the Agreement and Plan of Merger, the "Merger Agreement"), with
The Bear Stearns Companies Inc., the parent company of the Bear Stearns Capital
Markets Inc. The Merger Agreement provides that, upon the terms and subject to
the conditions set forth in Merger Agreement, a wholly-owned subsidiary of
JPMorgan Chase will merge with and into The Bear Stearns Companies Inc. with
The Bear Stearns Companies Inc. continuing as the surviving corporation and as
a wholly-owned subsidiary of JPMorgan Chase. The Merger Agreement has been
approved by the Boards of Directors of The Bear Stearns Companies Inc. and
JPMorgan Chase and is subject to customary closing conditions, including
stockholder approval. The Federal Reserve, the Office of the Comptroller of the
Currency and other federal agencies have given all necessary approvals for the
merger. The merger is expected to be completed by the end of the second
calendar year quarter of 2008, however there can be no assurance that the
merger will close as contemplated.

In connection with the Merger Agreement, JPMorgan Chase issued an Amended and
Restated Guaranty Agreement, effective as of March 16, 2008 (the "Guaranty"),
guaranteeing the obligations and liabilities of The Bear Stearns Companies Inc.
and certain of its affiliates, including the Bear Stearns Capital Markets Inc.'s

obligations under the Swap Agreement. A copy of the Guaranty is filed as
Exhibit 99.1 to this Form 10-K. Except with respect to the addition of this
Guaranty, the terms and conditions of the Swap Agreement remain
unchanged.


JPMorgan Chase is a financial holding company incorporated under Delaware law,
whose principal office is located in New York, New York. JPMorgan Chase
currently holds approximately $1.6 trillion in assets, and has $123 billion in
stockholders' equity with operations worldwide. JPMorgan Chase services include
investment banking, financial services for consumers, small business and
commercial banking, financial transaction processing, asset management, and
private equity. A component of the Dow Jones Industrial Average, JPMorgan Chase
serves millions of consumers in the United States and many of the world's
corporate, institutional and government clients under its JPMorgan and Chase
brands.



Item 1122 of Regulation AB, Compliance with Applicable Servicing Criteria.

The reports on assessment of compliance with the servicing criteria for
asset-backed securities and the related attestation reports on such assessments
of compliance are attached hereto under Item 15(a).

LaSalle Bank National Association's ("LaSalle") Report on Assessment
of Compliance with Servicing Criteria for 2007 (the "2007 Assessment") attached
to this Report on Form 10-K describes in Appendix B the following material
instance of noncompliance related to investor reporting:
"1122(d)(3)(i)(A) and (B) - During the Reporting Period, certain
monthly investor or remittance reports were not prepared in accordance with the
terms set forth in the transaction agreements and certain investor reports did
not provide the information calculated in accordance with the terms specified
in the transaction agreements for which certain individual errors may or may
not have been material."

The investor reporting errors identified on LaSalle's 2007 Assessment as
material instances of noncompliance (the "Investor Reporting Errors")
included, for example, revised delinquency, REO, foreclosure, repurchase,
payoff or modified loan counts, category indicators and/or balances. The
conclusion that the Investor Reporting Errors amounted to a material instance
of noncompliance was based primarily on the aggregate number of errors as
opposed to the materiality of any one error.

The Investor Reporting Errors were generally caused by human error resulting
primarily from high volume monthly data processing demands that had to be
addressed within constricted time frames with less than a full complement
of operational staff. Between the fourth quarter of the Reporting Period and
the date of the 2007 Assessment, LaSalle has employed additional operational
staff to accommodate the high volume of monthly investor reporting requirements
and minimize the risk of the Investor Reporting Errors recurring. Other
necessary controls are in place to minimize the risk of such errors.

With respect to the specific pool assets and asset-backed securities related
to the Investor Reporting Errors, the errors did not have, and are not
reasonable likely in the future to have, any material impact or effect on pool
asset performance, servicing of the pool assets and payments or expected
payments on the mortgage-backed securities.



Item 1123 of Regulation AB, Servicer Compliance Statement.

The servicer compliance statements are attached hereto under Item 15(a).



                               Part IV

  Item 15. Exhibits, Financial Statement Schedules.

  (a) Exhibits.

  (1) Not applicable.

  (2) Not applicable.

  (3)

  (4) Pooling and Servicing Agreement, dated as of March 1, 2007, among Bear
  Stearns Commercial Mortgage Securities Inc. as Depositor, Prudential Asset
  Resources, Inc. as a Master Servicer and as Loan Specific Special Servicer,
  Wells Fargo Bank, National Association as a Master Servicer, as Certificate
  Administrator and as Tax Administrator, ARCap Servicing, Inc. as General
  Special Servicer and LaSalle Bank National Association as Trustee (As
  previously filed on Form 8-K filed on April 13, 2007 and Form 8-K/A filed on
  May 3, 2007 (Commission File No. 333-130789-04) and is hereby incorporated
  by reference into this report on Form 10-K).

  (10.1) Primary Servicing Agreement, dated as of March 1, 2007, by and
  between the Master Servicer and Principal Global Investors, LLC (As
  previously filed on Form 8-K filed on April 13, 2007 and Form 8-K/A filed on
  May 3, 2007 (Commission File No. 333-130789-04) and is hereby incorporated
  by reference into this report on Form 10-K).

  (10.2) Primary Servicing Agreement, dated as of March 1, 2007, by and
  between the Master Servicer and Nationwide Life Insurance Company (As
  previously filed on Form 8-K filed on April 13, 2007 and Form 8-K/A filed on
  May 3, 2007 (Commission File No. 333-130789-04) and is hereby incorporated
  by reference into this report on Form 10-K).

  (10.3) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
  by and between Bear Stearns Commercial Mortgage Securities, Inc. and
  Prudential Mortgage Capital Funding, LLC (As previously filed on Form 8-K
  filed on April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File
  No. 333-130789-04) and is hereby incorporated by reference into this report
  on Form 10-K).

  (10.4) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
  by and between Bear Stearns Commercial Mortgage Securities, Inc. and Bear
  Stearns Commercial Mortgage, Inc. (As previously filed on Form 8-K filed on
  April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File No.
  333-130789-04) and is hereby incorporated by reference into this report on
  Form 10-K).

  (10.5) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
  by and between Bear Stearns Commercial Mortgage Securities, Inc. and Wells
  Fargo Bank, National Association (As previously filed on Form 8-K filed on
  April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File No.
  333-130789-04) and is hereby incorporated by reference into this report on
  Form 10-K).

  (10.6) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
  by and between Bear Stearns Commercial Mortgage Securities, Inc. and
  Principal Commercial Funding II, LLC (As previously filed on Form 8-K filed
  on April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File No.
  333-130789-04) and is hereby incorporated by reference into this report on
  Form 10-K).

  (10.7) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
  by and between Bear Stearns Commercial Mortgage Securities, Inc. and
  Principal Commercial Funding, LLC (As previously filed on Form 8-K filed on
  April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File No.
  333-130789-04) and is hereby incorporated by reference into this report on
  Form 10-K).

  (10.8) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
  by and between Bear Stearns Commercial Mortgage Securities, Inc. and
  Nationwide Life Insurance Company (As previously filed on Form 8-K filed on
  April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File No.
  333-130789-04) and is hereby incorporated by reference into this report on
  Form 10-K).

  (31) Rule 13a-14(d)/15d-14(d) Certification.

  (33) Reports on assessment of compliance with servicing criteria for
  asset-backed securities.


    <TABLE>
    
      <c>

    33.1 Centerline Servicing Inc. as Special Servicer
    33.2 LaSalle Bank National Association as Trustee
    33.3 Nationwide Life Insurance Company as Primary Servicer
    33.4 Principal Global Investors, LLC as Primary Servicer
    33.5 Prudential Asset Resources, Inc. as Master Servicer
    33.6 Prudential Asset Resources, Inc. as Special Servicer
    33.7 Wells Fargo Bank, N.A. as Certificate Administrator
    33.8 Wells Fargo Bank, N.A. as Master Servicer

    </TABLE>


  (34) Attestation reports on assessment of compliance with servicing criteria
  for asset-backed securities.


    <TABLE>
    
      <c>

    34.1 Centerline Servicing Inc. as Special Servicer
    34.2 LaSalle Bank National Association as Trustee
    34.3 Nationwide Life Insurance Company as Primary Servicer
    34.4 Principal Global Investors, LLC as Primary Servicer
    34.5 Prudential Asset Resources, Inc. as Master Servicer
    34.6 Prudential Asset Resources, Inc. as Special Servicer
    34.7 Wells Fargo Bank, N.A. as Certificate Administrator
    34.8 Wells Fargo Bank, N.A. as Master Servicer

    </TABLE>


   (35) Servicer compliance statement.


    <TABLE>
    
       <c>

    35.1 Centerline Servicing Inc. as Special Servicer
    35.2 Principal Global Investors, LLC as Primary Servicer
    35.3 Prudential Asset Resources, Inc. as Master Servicer
    35.4 Prudential Asset Resources, Inc. as Special Servicer
    35.5 Wells Fargo Bank, N.A. as Certificate Administrator
    35.6 Wells Fargo Bank, N.A. as Master Servicer

    </TABLE>


   (99.1) Amended and Restated Guaranty Agreement of JPMorgan Chase & Co.
   effective as of March 16, 2008


   (b) See (a) above.

   (c) 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.


   Bear Stearns Commercial Mortgage Securities Inc.
   (Depositor)


   /s/ Adam Ansaldi
   Adam Ansaldi, Vice President
   (senior officer in charge of securitization of the depositor)


    Date:   March 31, 2008



  Exhibit Index

  Exhibit No.


   (4) Pooling and Servicing Agreement, dated as of March 1, 2007, among Bear
   Stearns Commercial Mortgage Securities Inc. as Depositor, Prudential Asset
   Resources, Inc. as a Master Servicer and as Loan Specific Special Servicer,
   Wells Fargo Bank, National Association as a Master Servicer, as Certificate
   Administrator and as Tax Administrator, ARCap Servicing, Inc. as General
   Special Servicer and LaSalle Bank National Association as Trustee (As
   previously filed on Form 8-K filed on April 13, 2007 and Form 8-K/A filed
   on May 3, 2007 (Commission File No. 333-130789-04) and is hereby
   incorporated by reference into this report on Form 10-K).

   (10.1) Primary Servicing Agreement, dated as of March 1, 2007, by and
   between the Master Servicer and Principal Global Investors, LLC (As
   previously filed on Form 8-K filed on April 13, 2007 and Form 8-K/A filed
   on May 3, 2007 (Commission File No. 333-130789-04) and is hereby
   incorporated by reference into this report on Form 10-K).

   (10.2) Primary Servicing Agreement, dated as of March 1, 2007, by and
   between the Master Servicer and Nationwide Life Insurance Company (As
   previously filed on Form 8-K filed on April 13, 2007 and Form 8-K/A filed
   on May 3, 2007 (Commission File No. 333-130789-04) and is hereby
   incorporated by reference into this report on Form 10-K).

   (10.3) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
    by and between Bear Stearns Commercial Mortgage Securities, Inc. and
   Prudential Mortgage Capital Funding, LLC (As previously filed on Form 8-K
   filed on April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission
   File No. 333-130789-04) and is hereby incorporated by reference into this
   report on Form 10-K).

   (10.4) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
    by and between Bear Stearns Commercial Mortgage Securities, Inc. and Bear
   Stearns Commercial Mortgage, Inc. (As previously filed on Form 8-K filed on
   April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File No.
   333-130789-04) and is hereby incorporated by reference into this report on
   Form 10-K).

   (10.5) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
    by and between Bear Stearns Commercial Mortgage Securities, Inc. and Wells
   Fargo Bank, National Association (As previously filed on Form 8-K filed on
   April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File No.
   333-130789-04) and is hereby incorporated by reference into this report on
   Form 10-K).

   (10.6) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
    by and between Bear Stearns Commercial Mortgage Securities, Inc. and
   Principal Commercial Funding II, LLC (As previously filed on Form 8-K filed
   on April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File No.
   333-130789-04) and is hereby incorporated by reference into this report on
   Form 10-K).

   (10.7) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
    by and between Bear Stearns Commercial Mortgage Securities, Inc. and
   Principal Commercial Funding, LLC (As previously filed on Form 8-K filed on
   April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File No.
   333-130789-04) and is hereby incorporated by reference into this report on
   Form 10-K).

   (10.8) Mortgage Loan Purchase and Sale Agreement, dated as of March 8, 2007,
    by and between Bear Stearns Commercial Mortgage Securities, Inc. and
   Nationwide Life Insurance Company (As previously filed on Form 8-K filed on
   April 13, 2007 and Form 8-K/A filed on May 3, 2007 (Commission File No.
   333-130789-04) and is hereby incorporated by reference into this report on
   Form 10-K).

   (31) Rule 13a-14(d)/15d-14(d) Certification.

   (33) Reports on assessment of compliance with servicing criteria for
   asset-backed securities.


    <TABLE>

    
      <c>
    33.1 Centerline Servicing Inc. as Special Servicer
    33.2 LaSalle Bank National Association as Trustee
    33.3 Nationwide Life Insurance Company as Primary Servicer
    33.4 Principal Global Investors, LLC as Primary Servicer
    33.5 Prudential Asset Resources, Inc. as Master Servicer
    33.6 Prudential Asset Resources, Inc. as Special Servicer
    33.7 Wells Fargo Bank, N.A. as Certificate Administrator
    33.8 Wells Fargo Bank, N.A. as Master Servicer

    </TABLE>

   (34) Attestation reports on assessment of compliance with servicing
   criteria for asset-backed securities.


    <TABLE>

    
      <c>
    34.1 Centerline Servicing Inc. as Special Servicer
    34.2 LaSalle Bank National Association as Trustee
    34.3 Nationwide Life Insurance Company as Primary Servicer
    34.4 Principal Global Investors, LLC as Primary Servicer
    34.5 Prudential Asset Resources, Inc. as Master Servicer
    34.6 Prudential Asset Resources, Inc. as Special Servicer
    34.7 Wells Fargo Bank, N.A. as Certificate Administrator
    34.8 Wells Fargo Bank, N.A. as Master Servicer

    </TABLE>

   (35) Servicer compliance statement.


    <TABLE>

    
       <c>
    35.1 Centerline Servicing Inc. as Special Servicer
    35.2 Principal Global Investors, LLC as Primary Servicer
    35.3 Prudential Asset Resources, Inc. as Master Servicer
    35.4 Prudential Asset Resources, Inc. as Special Servicer
    35.5 Wells Fargo Bank, N.A. as Certificate Administrator
    35.6 Wells Fargo Bank, N.A. as Master Servicer

    </TABLE>

   (99.1)  Amended and Restated Guaranty Agreement of JPMorgan Chase & Co.
   effective as of March 16, 2008