<SUBMISSION>
<ACCESSION-NUMBER>0000899243-03-000373
<TYPE>SC TO-I/A
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20030224
<SUBJECT-COMPANY>
<COMPANY-DATA>
<CONFORMED-NAME>QUANTA SERVICES INC
<CIK>0001050915
<ASSIGNED-SIC>1731
<IRS-NUMBER>742851603
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC TO-I/A
<ACT>34
<FILE-NUMBER>005-54689
<FILM-NUMBER>03577809
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>1360 POST OAK BLVD
<STREET2>SUITE 2100
<CITY>HOUSTON
<STATE>TX
<ZIP>77056
<PHONE>7133506000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1360 POST OAK BLVD SUITE 2100
<CITY>HOUSTON
<STATE>TX
<ZIP>77056
</MAIL-ADDRESS>
</SUBJECT-COMPANY>
<FILED-BY>
<COMPANY-DATA>
<CONFORMED-NAME>QUANTA SERVICES INC
<CIK>0001050915
<ASSIGNED-SIC>1731
<IRS-NUMBER>742851603
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC TO-I/A
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>1360 POST OAK BLVD
<STREET2>SUITE 2100
<CITY>HOUSTON
<STATE>TX
<ZIP>77056
<PHONE>7133506000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1360 POST OAK BLVD SUITE 2100
<CITY>HOUSTON
<STATE>TX
<ZIP>77056
</MAIL-ADDRESS>
</FILED-BY>
<DOCUMENT>
<TYPE>SC TO-I/A
<SEQUENCE>1
<FILENAME>dsctoia.htm
<DESCRIPTION>AMENDMENT NO.5
<TEXT>
<HTML><HEAD>
<TITLE>Amendment No.5</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>UNITED
STATES </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>SECURITIES AND EXCHANGE COMMISSION </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"
ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Washington, D.C. 20549 </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"
ALIGN="center"><FONT FACE="Times New Roman" SIZE="5" COLOR="#000000"><B>SCHEDULE TO </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>(Amendment No. 5)
</B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Tender Offer Statement under Section 14(d)(1) or 13(e)(1) </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"
ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>of the Securities Exchange Act of 1934 </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"
ALIGN="center"><FONT FACE="Times New Roman" SIZE="5" COLOR="#000000"><B>QUANTA SERVICES, INC. </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(Name of Subject Company
(Issuer) and Filing Person) </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Options to
Purchase Common Stock, par value $.00001 per share, </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Having an Exercise Price of $10.00 or More </B></FONT></P><P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(Title of Class of Securities) </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>74762E 10 2 </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"
COLOR="#000000">(CUSIP Number of Class of Securities) </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(Underlying Common Stock) </FONT></P><P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Dana A. Gordon </B></FONT></P><P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Vice President, General Counsel and Secretary </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Quanta Services, Inc. </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>1360 Post Oak Blvd., Suite 2100
</B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Houston, Texas 77056 </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>(713) 629-7600 </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(Name, Address and Telephone Number of Person
Authorized to Receive Notices and </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Communications on Behalf of Filing Person) </FONT></P><P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">With a copy to:<B></B> </FONT></P><P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Eric A. Blumrosen </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"
COLOR="#000000"><B>Gardere Wynne Sewell LLP </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>1000 Louisiana, Suite 3400 </B></FONT></P><P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Houston, Texas 77002-5007 </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman"
SIZE="2" COLOR="#000000"><B>(713) 276-5500 </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><FONT
FACE="WINGDINGS">&#120;</FONT> Check the box if any part of the fee is offset as provided by Rule 0-11(a)(2) and identify the filing with which the offsetting fee was previously paid. Identify the previous filing by registration statement number, or
the Form or Schedule and the date of its filing. </FONT></P><P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px; margin-left:4%"><FONT FACE="Times New Roman" SIZE="2"
COLOR="#000000">Amount previously paid: $1,175. Filing party: Quanta Services, Inc. Form or Registration No.: 005-54689. Date filed: </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px; margin-left:4%"><FONT FACE="Times New Roman" SIZE="2"
COLOR="#000000">January&nbsp;21, 2003. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"></FONT><FONT
FACE="WINGDINGS" SIZE="2" COLOR="#000000">&#168;</FONT><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"> Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer. </FONT></P><P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Check the appropriate boxes below to designate any transactions to which the
statement relates: </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"></FONT><FONT FACE="WINGDINGS" SIZE="2" COLOR="#000000">&#168;</FONT><FONT FACE="Times New Roman" SIZE="2"
COLOR="#000000"> third party tender offer subject to Rule 14d-1. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><FONT FACE="WINGDINGS">&#120;</FONT> issuer tender offer subject to Rule
13e-4. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"></FONT><FONT FACE="WINGDINGS" SIZE="2" COLOR="#000000">&#168;</FONT><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">
going-private transaction subject to Rule 13e-3. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"></FONT><FONT FACE="WINGDINGS" SIZE="2" COLOR="#000000">&#168;</FONT><FONT
FACE="Times New Roman" SIZE="2" COLOR="#000000"> amendment to Schedule 13D under Rule 13d-2. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT
FACE="Times New Roman" SIZE="2" COLOR="#000000">Check the following box if the filing is a final amendment reporting the results of the tender offer. </FONT><FONT FACE="WINGDINGS" SIZE="2" COLOR="#000000">&#168;</FONT><FONT FACE="Times New Roman"
SIZE="2" COLOR="#000000"> </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" COLOR="#999999" WIDTH="100%" ALIGN="CENTER">
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>INTRODUCTION
</B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">This Amendment No. 5 (this &#147;<U>Amendment</U>&#148;)
amends and supplements the Tender Offer Statement on Schedule TO (the &#147;Schedule TO&#148;) filed with the Securities and Exchange Commission (the &#147;<U>Commission</U>&#148;) on January 21, 2003 by Quanta Services, Inc. (the
&#147;<U>Company</U>&#148;), as previously amended by Amendment No. 1 to Schedule TO (&#147;<U>Amendment No. 1</U>&#148;) filed with the Commission on February 7, 2003 by the Company and Amendment No. 2 to Schedule TO (&#147;<U>Amendment No.
2</U>&#148;) filed with the Commission on February 12, 2003 by the Company and Amendment No. 3 to Schedule TO (&#147;<U>Amendment No. 3</U>&#148;) filed with the Commission on February 18, 2003 by the Company and Amendment No. 4 to Schedule TO
(&#147;<U>Amendment No. 4</U>&#148;) filed with the Commission on February 19, 2003 by the Company. Capitalized terms used and not defined in this Amendment have the meanings given to those terms in the Schedule TO, Amendment No. 1, Amendment No. 2,
Amendment No. 3, Amendment No. 4 and their respective exhibits. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2"
COLOR="#000000"><B>ITEM 4. </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Item 4 of the Schedule TO, as
amended by Amendment No. 1, Amendment No. 2, Amendment No. 3 and Amendment No. 4, which incorporates by reference information contained in the Offer to Exchange, is hereby amended as follows: </FONT></P><P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(1)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">The fourth sentence of the first paragraph of the section of the Offer to Exchange entitled &#147;Acceptance Of Options For Exchange&#148; is hereby amended and
restated in its entirety as follows: </FONT></TD></TR></TABLE><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px; margin-left:8%"><FONT FACE="Times New Roman" SIZE="2"
COLOR="#000000">&#147;If we accept your eligible options that are properly tendered and not validly withdrawn, promptly following the expiration date we will give written notice to you of our acceptance. Our communication to you indicating our
acceptance will be evidence of our binding agreement with you.&#148; </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" COLOR="#999999" WIDTH="100%" ALIGN="CENTER">
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>SIGNATURE
</B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">After due inquiry and to the best of my
knowledge and belief, I certify that the information set forth in this Amendment is true, complete and correct. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="95%" BORDER="0">

<TR>
<TD><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="38%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>QUANTA SERVICES, INC.</B></FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD></TR>
<TR>
<TD><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="38%"> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:2%; text-indent:-2%"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">By:&nbsp;&nbsp;&nbsp;/s/&nbsp;&nbsp; DANA A. GORDON</FONT></P><HR SIZE="1" NOSHADE
COLOR="#000000" ALIGN="left"></TD></TR>
<TR>
<TD><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="38%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Dana A. Gordon</FONT></P></TD></TR>
<TR>
<TD><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="38%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2"
COLOR="#000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Vice&nbsp;President,&nbsp;General&nbsp;Counsel&nbsp;and&nbsp;Secretary</FONT></P></TD></TR>
</TABLE><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Dated:
February 24, 2003<B></B> </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" COLOR="#999999" WIDTH="100%" ALIGN="CENTER">
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>INDEX TO
EXHIBITS </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" ALIGN="center">

<TR>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="1" COLOR="#000000"><B>EXHIBIT NUMBER</B></FONT></P><HR WIDTH="56" SIZE="1" NOSHADE ALIGN="left" COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1" COLOR="#000000"><B>DESCRIPTION</B></FONT></P><HR WIDTH="85" SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(a) (1)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Offer to Exchange, dated January 21, 2003.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(a)&nbsp;(2)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Form of Letter of Transmittal.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(a) (3)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Form of Letter to Holders.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(a) (4)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Pages 29 through 57 of the Quanta Services, Inc. Annual Report on Form 10-K for the year ended December 31, 2001,
filed with the Securities and Exchange Commission on April 1, 2002, incorporated herein by reference.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(a) (5)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Pages 1 through 12 of the Quanta Services, Inc. Quarterly Report on Form 10-Q for the quarter ended September 30,
2002, filed with the Securities and Exchange Commission on November 14, 2002, incorporated herein by reference.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(a) (6)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Letter to Eligible Option Holders, dated February 7, 2003.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(a) (7)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Transcript of conference call with eligible participants, held on February 17, 2003.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(b)</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Not applicable.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(d)&nbsp;(1)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Quanta Services, Inc. 2001 Stock Incentive Plan (amending and restating the 1997 Stock Option Plan), filed as Exhibit
10.22 to the Company&#146;s Quarterly Report on Form 10-Q for the quarter ended June 30, 2001, and incorporated herein by reference.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(d) (2)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Amendment No. 1 to Quanta Services, Inc. 2001 Stock Incentive Plan, filed as Exhibit 10.15 to the Company&#146;s
Annual Report on Form 10-K for the year ended December 31, 2001, and incorporated herein by reference.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(d) (3)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Amendment No. 2 to Quanta Services, Inc. 2001 Stock Incentive Plan.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(d) (4)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Amendment No. 3 to Quanta Services, Inc. 2001 Stock Incentive Plan.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(d) (5)*</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Representative Sample of Restricted Stock Award Agreement (included as Schedule B to Exhibit (a)(1) and incorporated
herein by reference).</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(g)</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Not applicable.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="8%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(h)</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="91%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Not applicable.</FONT></P></TD></TR>
</TABLE><HR WIDTH="8%" SIZE="1" NOSHADE COLOR="#000000" ALIGN="left">
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="1%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">*</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Previously filed. </FONT></TD></TR></TABLE><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>


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