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 *
  Leist Brad Alan
 2. Date of Event Requiring Statement (Month/Day/Year)
02/23/2010		 3. Issuer Name and Ticker or Trading Symbol
Builders FirstSource, Inc. [BLDR]
(Last)
(First)
(Middle)
2001 BRYAN STREET, SUITE 1600		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President and Controller
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

DALLAS, TX 75201		 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 (1) 40,000
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
Employee Stock Option (right to buy)   (2) 02/27/2014 Common Stock, par value $0.01 per share 4,167 $ 3.15 D  
Employee Stock Option (right to buy)   (3) 02/26/2018 Common Stock, par value $0.01 per share 30,000 $ 6.7 D  
Employee Stock Option (right to buy)   (4) 02/03/2020 Common Stock, par value $0.01 per share 80,000 $ 3.19 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Leist Brad Alan
2001 BRYAN STREET, SUITE 1600
DALLAS, TX 75201		       Vice President and Controller  

Signatures

/s/ Brad A. Leist 03/02/2010
**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) Restricted stock award granted pursuant to the Corporation's 2007 Incentive Plan. The grant vests in 33.33% increments on each of February 3, 2012-2014.
(2) Employee stock option granted pursuant to the Corporation's 1998 Stock Incentive Plan. All 4,167 options are currently exercisable.
(3) Employee stock option granted pursuant to the Corporation's 2007 Incentive Plan. 20,000 options are currently vested. 10,000 options will vest on February 26, 2011.
(4) Employee stock option granted pursuant to the Corporation's 2007 Incentive Plan. The grant vests in 33.33% increments on each of February 3, 2012-2014.

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