Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 *
JENSEN DERRICK A
   2. Issuer Name and Ticker or Trading Symbol
QUANTA SERVICES INC [PWR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Financial Officer
(Last)
(First)
(Middle)
2800 POST OAK BLVD., SUITE 2600		 3. Date of Earliest Transaction (Month/Day/Year)
12/13/2012
(Street)

HOUSTON, TX 77056-6175		 4. If Amendment, Date Original Filed(Month/Day/Year)
 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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 12/13/2012   S   4,900 D $ 27 111,408 D  
Common Stock 12/13/2012   S   1,500 D $ 27.005 109,908 D  
Common Stock 12/13/2012   S   2,700 D $ 27.01 107,208 D  
Common Stock 12/13/2012   S   2,100 D $ 27.0101 105,108 D  
Common Stock 12/13/2012   S   800 D $ 27.015 104,308 D  
Common Stock 12/13/2012   S   100 D $ 27.019 104,208 D  
Common Stock 12/13/2012   S   3,800 D $ 27.02 100,408 D  
Common Stock 12/13/2012   S   2,500 D $ 27.0201 97,908 D  
Common Stock 12/13/2012   S   2,000 D $ 27.03 95,908 D  
Common Stock 12/13/2012   S   600 D $ 27.0301 95,308 D  
Common Stock 12/13/2012   S   100 D $ 27.0311 95,208 D  
Common Stock 12/13/2012   S   1,600 D $ 27.035 93,608 D  
Common Stock 12/13/2012   S   200 D $ 27.04 93,408 D  
Common Stock 12/13/2012   S   3,025 D $ 27.0401 90,383 D  
Common Stock 12/13/2012   S   100 D $ 27.041 90,283 D  
Common Stock 12/13/2012   S   400 D $ 27.045 89,883 D  
Common Stock 12/13/2012   S   100 D $ 27.049 89,783 D  
Common Stock 12/13/2012   S   2,900 D $ 27.24 86,883 D  
Common Stock 12/13/2012   S   1,100 D $ 27.2401 85,783 D  
Common Stock 12/13/2012   S   900 D $ 27.245 84,883 D  
Common Stock 12/13/2012   S   2,700 D $ 27.25 82,183 D  
Common Stock 12/13/2012   S   1,500 D $ 27.2501 80,683 D  
Common Stock 12/13/2012   S   800 D $ 27.255 79,883 D  
Common Stock 12/13/2012   S   100 D $ 27.26 79,783 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
JENSEN DERRICK A
2800 POST OAK BLVD., SUITE 2600
HOUSTON, TX 77056-6175		       Chief Financial Officer  

Signatures

 /s/ Carolyn M. Campbell, Atty-in-Fact   12/14/2012
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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