Form: 3

Initial statement of beneficial ownership of securities

August 31, 2007

Documents

SEC Form 3
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
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0104
Estimated average burden
hours per response: 0.5
1. Name and Address of Reporting Person*
BUCKMAN FREDERICK W
(Last) (First) (Middle)
1360 POST OAK BOULEVARD, SUITE 2100
(Street)
HOUSTON TX 77056-3023
(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
08/30/2007 		3. Issuer Name and Ticker or Trading Symbol
QUANTA SERVICES INC [ PWR ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of 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
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)
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: 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
Stock Options (Right to buy)(1) 08/30/2007 09/21/2016 Common Stock 24,353(2) 13.85 D
Explanation of Responses:
1. Exhibit 24 - Power of Attorney
2. Received in connection with the merger of InfraSource Services, Inc. ("IFS") into Quanta Services, Inc. ("Quanta") (the "Merger") in exchange for an employee stock option to acquire 19,913 shares of IFS common stock for $16.93 per share. Such options were converted into options to acquire Quanta common stock using the exchange ratio of 1.223 shares of Quanta common stock for each share of IFS common stock. In connection with the change of control of IFS resulting from the Merger, all unvested options became fully vested on August 30, 2007.
Remarks:
/s/ Tana L. Pool, Atty-in-Fact 08/31/2007
** Signature of Reporting Person Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* 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).

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

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.