Specimen Unit Certificate



 Exhibit 4.1 
  


					
	NUMBER	  	 	  	UNITS
			
	U-	  	 	  	 
	 SEE REVERSE FOR
 CERTAIN DEFINITIONS
	  	BUILDER ACQUISITION CORP.	  	 

  
 CUSIP ______________

  
 UNITS CONSISTING OF ONE SHARE OF COMMON STOCK AND ONE
WARRANT TO PURCHASE ONE SHARE OF 
 COMMON STOCK 
  
 THIS CERTIFIES
THAT                                        
                                        
                                 is the owner of
                                
                                        
                                        
                                        
                                     Units. 
  
 Each Unit (“Unit”) consists of one (1) share of common stock, par value $.0001
per share (“Common Stock”), of Builder Acquisition Corp., a Delaware corporation (the “Company”), and one warrant (the “Warrants”). Each Warrant entitles the holder to purchase one (1) share of Common Stock
for $6.00 per share (subject to adjustment). Each Warrant will become exercisable on the later of (i)            , 2007 or (ii) the Company’s completion of a merger,
capital stock exchange, asset acquisition, stock purchase or other business combination transaction of one or more operating businesses in the homebuilding industry that is its initial business combination and which meets the size, timing and other
criteria outlined in the Company’s registration statement on Form S-1 initially filed with the Securities and Exchange Commission on July 9, 2006 (File No. 333-134909), as amended, and will expire unless exercised before 5:00 p.m.,
New York City Time, on                 , 2010, or earlier upon redemption (the “Expiration Date”); provided, however, if such expiration date is in the State
of New York is a holiday or a day on which banking institutions are authorized to close, then the Expiration Date shall mean 5:00 p.m., (New York Time), the next following day in which, in the State of New York is not a holiday or a day which banks
are authorized to close. The Common Stock and Warrants comprising the Units represented by this certificate are not transferable separately prior to
                , 2006, subject to earlier separation in the discretion of JMP Securities. The terms of the Warrants are governed by a Warrant Agreement, dated as
of                 , 2006, between the Company and Continental Stock Transfer & Trust Company, as Warrant Agent, and are subject to the terms and provisions
contained therein, all of which terms and provisions the holder of this certificate consents to by acceptance hereof. Copies of the Warrant Agreement are on file at the office of the Warrant Agent at 17 Battery Place, New York, New York 10004,
and are available to any Warrant holder on written request and without cost. 
  
 This certificate is not valid unless countersigned by the Transfer Agent and Registrar of the Company. 
  
 Witness the facsimile seal of the Company and the facsimile signature of its duly authorized officers. 
  

							
	 	 	 	  	BUILDER ACQUISITION CORP.	 	 
				
	 	 	 	  	CORPORATE	 	 
	 	 	 	  	DELAWARE	 	 
	 By: 
	 	 	  	SEAL	 	 
	 	 	 Chairman of the Board
	  	2006	 	 Secretary









 BUILDER ACQUISITION CORP. 
  
 The Company will furnish without charge to each stockholder who so requests, a statement of the powers, designations, preferences and
relative, participating, optional or other special rights of each class of stock or series thereof of the Company and the qualifications, limitations, or restrictions of such preferences and/or rights. 
  
 The following abbreviations, when used in the inscription on the face of this certificate,
shall be construed as though they were written out in full according to applicable laws or regulations: 
  

									
	TEN COM –	  	as tenants in common	  	 UNIF GIFT MIN ACT -
              Custodian

	TEN ENT –	  	as tenants by the entireties	  	 	  	        (Cust)	  	(Minor)
	JT TEN –	  	as joint tenants with right of survivorship	  	 under Uniform Gifts to Minors Act

	 	  	and not as tenants in common	  	 	  	_______________________
				
	 	  	 	  	 	  	(State)

  
 Additional Abbreviations may also be
used though not in the above list. 
  
 For value received,
                                        
                     hereby sell, assign and transfer unto 
  
 PLEASE INSERT SOCIAL SECURITY OR OTHER 
 IDENTIFYING NUMBER OF ASSIGNEE 
  
  
  
 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

  
  
  
 Units 
  
 represented by the within Certificate, and do hereby irrevocably constitute and appoint
                                        
                            
                                        
                                        
                                        
        Attorney to transfer the said Units on the books of the within named Company will full power of substitution in the premises. 
  
 Dated
                         
  

			
		
	 	 	 
	Notice: 	 	The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change
whatever.


  
 Signature(s) Guaranteed:

  

			
		
	  	 	  
	 THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
 (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM,
 PURSUANT TO S.E.C. RULE 17Ad-15).