Document:

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).Specimen Common Stock Certificate

 Exhibit 4.2 
  

			
	NUMBER	  	SHARES
		
	[SYMBOL]	  	 

  
 BUILDER ACQUISITION
CORP. 
  
 INCORPORATED UNDER THE LAWS OF THE STATE OF
DELAWARE 
  
 COMMON STOCK 
  
 SEE REVERSE FOR 
 CERTAIN DEFINITIONS 
  

			
	This Certifies that	  	CUSIP _________________
		
	is the owner of	  	 

  
 FULLY PAID AND
NON-ASSESSABLE SHARES OF THE PAR VALUE OF $.0001 EACH OF THE COMMON STOCK 
 OF 
  
 BUILDER ACQUISITION CORP. 
  
 transferable on the books of the Corporation in person or by duly
authorized attorney upon surrender of this certificate properly 
 endorsed. This certificate is not valid unless countersigned by the
Transfer Agent and registered by the Registrar. Witness the seal of 
 the Corporation and the facsimile signatures of its duly
authorized officers. 
  

					
	Dated:	  	BUILDER ACQUISITION CORP.	 	 
			
	 	  	CORPORATE	 	 
	 	  	SEAL	 	 
	 	  	2006	 	 
			
	 	  	DELAWARE	 	 
	 CHAIRMAN
	  	 	 	 SECRETARY

 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. 
  
 BUILDER ACQUISITION CORP. 
  
 The Corporation will furnish without
charge to each stockholder who so requests the powers, designations, preferences and relative, participating, optional or other special rights of each class of stock or series thereof of the Corporation and the qualifications, limitations, or
restrictions of such preferences and/or rights. This certificate and the shares represented thereby are issued and shall be held subject to all the provisions of the Certificate of Incorporation and all amendments thereto and resolutions of the
Board of Directors providing for the issue of shares of Preferred Stock (copies of which may be obtained from the secretary of the Corporation), to all of which the holder of this certificate by acceptance hereof assents. 
  
 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) 
  
  
  
 shares 
  
 of the capital stock represented by the within Certificate, and do hereby irrevocably
constitute and
appoint                                       
     
                                        
                                        
                                        
                                        
                     Attorney to transfer the said stock on the books of the within named Corporation 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).

  
 The holder of this certificate shall
be entitled to receive funds from the trust fund only in the event that Builder Acquisition Corp. is liquidated because it does not consummate a business combination or the holder seeks to convert his respective shares into cash upon a business
combination which he voted against and which is actually completed by the Company. In no other circumstances shall the holder have any right or interest of any kind in or to the trust fund.Specimen Warrant Certificate

 Exhibit 4.3 
  

					
	NUMBER	  	(SEE REVERSE SIDE FOR LEGEND)	  	WARRANTS
			
	[SYMBOL]	  	 THIS WARRANT WILL BE VOID IF NOT EXERCISED PRIOR TO
 5:00 P.M. NEW YORK CITY TIME,                     , 2010
 OR UPON EARLIER REDEMPTION
	  	 

  
 BUILDER ACQUISITON
CORP. 
  
 CUSIP ___________ 
  
 WARRANT 
  
 THIS CERTIFIES THAT, for value received 
  
 is the registered holder of a Warrant or Warrants expiring at 5:00 p.m., New York City Time,
                    , 2010, or upon earlier redemption (the “Warrant”), to purchase one fully paid and non-assessable share of Common
Stock, par value $.0001 per share (“Shares”), of Builder Acquisition Corp., a Delaware corporation (the “Company”), for each Warrant evidenced by this Warrant Certificate. If such expiration date is in the State of New York
a holiday or a day on which banking institutions are authorized or obligated by law or executive order to close, then the expiration date shall mean 5:00 P.M., New York City Time, the next following day which in the State of New York is not a
holiday or day on which banking institutions are authorized or obligated by law or executive order to close. The Warrant entitles the holder thereof to purchase from the Company, commencing on the later of
(i)                     , 2007 or (ii) the consummation by the Company of an acquisition through merger, capital stock exchange, asset
acquisition, stock purchase or other business combination transaction, or a combination of any of the foregoing, 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 ________, 2006 (File No. 333-________), as amended (“Business Combination”),
such number of Shares of the Company at the price of $6.00 per share, upon surrender of this Warrant Certificate accompanied by the annexed duly executed subscription form and payment of the Warrant Price at the office or agency of the Warrant
Agent, Continental Stock Transfer & Trust Company (such payment to be made by check made payable to the Warrant Agent), but only subject to the conditions set forth herein and in the Warrant Agreement between the Company and Continental
Stock Transfer & Trust Company (the “Warrant Agreement”). The Warrant Agreement provides that upon the occurrence of certain events the Warrant Price and the number of Warrant Shares purchasable hereunder, set forth on the
face hereof, may, subject to certain conditions, be adjusted. The term Warrant Price as used in this Warrant Certificate refers to the price per Share at which Shares may be purchased at the time the Warrant is exercised. 
  
 No fraction of a Share will be issued upon any exercise of a Warrant. If the holder of a
Warrant would be entitled to receive a fraction of a Share upon any exercise of a Warrant, the Company shall, upon such exercise, round up or down to the nearest whole number the number of Shares to be issued to such holder. 
  
 Upon any exercise of the Warrant for less than the total number of full Shares provided for
herein, there shall be issued to the registered holder hereof or his assignee a new Warrant Certificate covering the number of Shares for which the Warrant has not been exercised. 
  
 Warrant Certificates, when surrendered at the office or agency of the Warrant Agent by the registered holder hereof in person or by attorney
duly authorized in writing, may be exchanged in the manner and subject to the limitations provided in the Warrant Agreement, but without payment of any service charge, for another Warrant Certificate or Warrant Certificates of like tenor and
evidencing in the aggregate a like number of Warrants. 
  
 Upon due presentment
for registration of transfer of the Warrant Certificate at the office or agency of the Warrant Agent, a new Warrant Certificate or Warrant Certificates of like tenor and evidencing in the aggregate a like number of Warrants shall be issued to the
transferee in exchange for this Warrant Certificate, subject to the limitations provided in the Warrant Agreement, without charge except for any applicable tax or other governmental charge. 

 The Company and the Warrant Agent may deem and treat the registered holder as the absolute owner of this Warrant
Certificate (notwithstanding any notation of ownership or other writing hereon made by anyone), for the purpose of any exercise hereof, of any distribution to the registered holder, and for all other purposes, and neither the Company nor the Warrant
Agent shall be affected by any notice to the contrary. 
  
 This Warrant Certificate does not entitle the registered holder to any of the rights of a stockholder of the Company. 
  
 The Company reserves the right to redeem all (but not part) of the then outstanding Warrants, with a notice of redemption in writing to the holders of record of the
Warrants then outstanding, giving 30 days’ notice of such redemption at any time after such Warrants become exercisable if the last sale price of the Shares has been at least $11.50 per share (the “Trigger Price”) on each of 20
trading days within a 30 trading day period ending on the third business day prior to the date on which notice of such redemption is given. The redemption price of the Warrants is to be $.01 per Warrant. Any Warrant either not exercised or tendered
back to the Company by the end of the date specified in the notice of redemption shall be canceled on the books of the Company and have no further value except for the $.01 redemption price. The Trigger Price is subject to adjustments as
provided in the Warrant Agreement. 
  
 This
Warrant Certificate shall be governed by and construed in accordance with the laws of the State of New York. 
  

							
	 	 	 	 	 By: 
	 	BUILDER ACQUISITION CORP.
				
	  	 	 	 	  	 	  
	Secretary	 	 	 	 	 	Chairman of the Board

  
 COUNTERSIGNED 
  
 CONTINENTAL STOCK
TRANSFER & TRUST COMPANY, 
  
 as Warrant
Agent 
  
 __________________________________ 
 Authorized Officer 

 SUBSCRIPTION FORM 
  
 To Be Executed by the Registered Holder in Order to Exercise Warrants 
  
 The undersigned Registered Holder irrevocably elects to exercise
                         Warrants represented by this Warrant Certificate, and to purchase the shares of Common Stock issuable
upon the exercise of such Warrants, and requests that Certificates for such shares shall be issued in the name of 
  
 (PLEASE TYPE OR PRINT NAME AND ADDRESS) 
  
 (SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER) 
  
 and be delivered to 
  
 (PLEASE PRINT OR TYPE NAME AND ADDRESS) 
  
 and, if such number of Warrants shall not be all the Warrants evidenced by this Warrant Certificate, that a new Warrant Certificate for the balance of such Warrants be
registered in the name of, and delivered to, the Registered Holder at the address stated below: 
  

	Dated:	                                 

  

	
	
	  
	(SIGNATURE)
	
	  
	(ADDRESS)
	
	  
	(TAX IDENTIFICATION NUMBER)

 ASSIGNMENT 
 To Be Executed by the Registered Holder in Order to Assign Warrants 
  
 For Value Received,
                                        
    hereby sell, assign, and transfer unto 
  
 (PLEASE TYPE OR PRINT NAME AND ADDRESS) 
  
 (SOCIAL
SECURITY OR TAX IDENTIFICATION NUMBER) 
  
 and be
delivered to 
  
 (PLEASE PRINT OR TYPE NAME AND ADDRESS)

  
                                 of the Warrants represented by this Warrant
Certificate, and hereby irrevocably constitute and appoint                          Attorney to transfer this Warrant Certificate
on the books of the Company, with full power of substitution in the premises. 
  

									
					
	Dated:	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	(SIGNATURE)

  
 THE SIGNATURE TO THE ASSIGNMENT OF THE
SUBSCRIPTION FORM MUST CORRESPOND TO THE NAME WRITTEN UPON THE FACE OF THIS WARRANT CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER, AND MUST BE GUARANTEED BY A COMMERCIAL BANK OR TRUST COMPANY OR A MEMBER
FIRM OF THE AMERICAN STOCK EXCHANGE, NEW YORK STOCK EXCHANGE, PACIFIC STOCK EXCHANGE OR CHICAGO STOCK EXCHANGE.

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