Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  JLL Building Holdings, LLC
 2. Date of Event Requiring Statement (Month/Day/Year)
06/22/2010		 3. Issuer Name and Ticker or Trading Symbol
Builders FirstSource, Inc. [BLDR]
(Last)
(First)
(Middle)
C/O JLL PARTNERS, INC., 450 LEXINGTON AVENUE, 31ST FLOOR		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10017		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock, par value $0.01 per share 24,344,584 (1)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
JLL Building Holdings, LLC
C/O JLL PARTNERS, INC.
450 LEXINGTON AVENUE, 31ST FLOOR
NEW YORK, NY 10017		     X    

Signatures

JLL Building Holdings, LLC, By: JLL Partners Fund V, L.P., its sole member By: JLL Associates V, L.P., its general partner By: JLL Associates G.P. V, L.L.C., its general partner /s/ Paul S. Levy, Managing Member 06/30/2010
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) JLL Building Holdings, LLC is the direct beneficial owner of 24,344,584 shares of common stock, par value $0.01 per share, of Builders FirstSource, Inc. (the "Company"). JLL Partners Fund V, L.P. is the sole member of JLL Building Holdings, LLC; JLL Associates V, L.P. is the general partner of JLL Partners Fund V, L.P.; and JLL Associates G.P. V, L.L.C. is the general partner of JLL Associates V, L.P. JLL Partners Fund V, L.P., JLL Associates V, L.P., and JLL Associates G.P. V, L.L.C. may be deemed to be the indirect beneficial owners of 24,344,584 shares of common stock of the Company. Each of these persons disclaims beneficial ownership of these securities, except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that any of these persons is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

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