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<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>QUANTA SERVICES INC
<CIK>0001050915
<ASSIGNED-SIC>1731
<IRS-NUMBER>742851603
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
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<ACT>34
<FILE-NUMBER>001-13831
<FILM-NUMBER>04755464
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<BUSINESS-ADDRESS>
<STREET1>1360 POST OAK BLVD
<STREET2>SUITE 2100
<CITY>HOUSTON
<STATE>TX
<ZIP>77056
<PHONE>7133506000
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<DESCRIPTION>QUANTA SERVICES, INC. - APRIL 26, 2004
<TEXT>
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<HEAD>
<TITLE>e8vk</TITLE>
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<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">


<HR size="4" noshade color="#000000" style="margin-top: -5px">
<HR size="1" noshade color="#000000" style="margin-top: -10px">





<P align="center" style="font-size: 14pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>

<DIV align="center" style="font-size: 12pt"><B>WASHINGTON, D.C. 20549<BR>
_______________</B>
</DIV>

<P align="center" style="font-size: 18pt"><B>FORM 8-K</B>

<P align="center" style="font-size: 12pt"><B>CURRENT REPORT<BR>
PURSUANT TO SECTION 13 OR 15(D) OF THE<BR>
SECURITIES EXCHANGE ACT OF 1934</B>


<P align="center" style="font-size: 10pt">Date of Report (Date of earliest event reported): April&nbsp;26, 2004


<P align="center" style="font-size: 24pt"><B>QUANTA SERVICES, INC.</B>

<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>



<P align="center" style="font-size: 10pt">Delaware<BR>
(State or other jurisdiction of incorporation)


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="55%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top">1-13831<BR>
(Commission File No.)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">74-2851603<BR>
(IRS Employer Identification No.)</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>



<P align="center" style="font-size: 10pt">1360 Post Oak Boulevard, Suite&nbsp;2100<BR>
Houston, Texas 77056<BR>
(Address of principal executive offices, including ZIP code)



<P align="center" style="font-size: 10pt">(713)&nbsp;629-7600<BR>
(Registrant&#146;s telephone number, including area code)



<P align="center" style="font-size: 10pt">Not Applicable<BR>
(Former name or former address, if changed since last report)



<P>
<HR size="1" noshade color="#000000" style="margin-top: -2px">
<HR size="4" noshade color="#000000" style="margin-top: -10px">







<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">




<!-- TOC -->
<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

<P><CENTER>
<TABLE border="0" width="90%" cellpadding="0" cellspacing="0">
<TR>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="76%"></TD>
</TR>
<TR><TD colspan="9"><A HREF="#000">Item&nbsp;7. Financial Statements and Exhibits.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#001">Item&nbsp;12. Results of Operations and Financial Condition.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#002">SIGNATURE</A></TD></TR>
<TR><TD colspan="9"><A HREF="#003">Exhibit&nbsp;Index</A></TD></TR>
<TR><TD colspan="9"><A HREF="h14748exv99w1.htm">Press Release</A></TD></TR>
</TABLE>
</CENTER>
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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>




<!-- link1 "Item&nbsp;7. Financial Statements and Exhibits." -->
<DIV align="left"><A NAME="000"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;7. Financial Statements and Exhibits.</B>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following exhibits are furnished as part of this Current Report on
Form 8-K, pursuant to Item&nbsp;12:

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="65%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="8%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="87%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Exhibit No.</B><HR size="1" noshade></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Exhibit</B><HR size="1" noshade></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">99.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Press Release of Quanta Services Inc. dated April&nbsp;26, 2004</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>


<!-- link1 "Item&nbsp;12. Results of Operations and Financial Condition." -->
<DIV align="left"><A NAME="001"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;12. Results of Operations and Financial Condition.</B>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On April&nbsp;26, 2004, Quanta issued a press release announcing its revised
loss per share estimate for the quarter ended March&nbsp;31, 2004. A copy of the
press release is furnished herewith as an exhibit.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The information furnished in this Current Report on Form 8-K, including
the exhibit, shall not be deemed &#147;filed&#148; with the SEC and will not be
incorporated by reference into any registration statement filed under the
Securities Act of 1933, as amended, unless specifically identified therein as
being incorporated by reference.

<!-- link1 "SIGNATURE" -->
<DIV align="left"><A NAME="002"></A></DIV>

<P align="center" style="font-size: 10pt"><B>SIGNATURE</B>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD>Dated: April 26, 2004<BR>
</TD>
</TR><TR>
    <TD valign="top">&nbsp;</TD>
    <TD colspan="3">QUANTA SERVICES, INC.<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD>&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000">/s/ DANA A. GORDON
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top">Name:&nbsp;&nbsp;</TD>
    <TD>Dana A. Gordon&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top">Title:&nbsp;&nbsp;</TD>
    <TD>Vice President - General Counsel&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

</TABLE>

<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>

</TABLE>
<!-- link1 "Exhibit&nbsp;Index" -->
<DIV align="left"><A NAME="003"></A></DIV>

<P align="center" style="font-size: 10pt"><B>Exhibit&nbsp;Index</B>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="65%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="8%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="87%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Exhibit No.</B><HR size="1" noshade></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Exhibit</B><HR size="1" noshade></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">99.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Press Release of Quanta Services Inc. dated April&nbsp;26, 2004</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>




<P align="center" style="font-size: 10pt">&nbsp;
</DIV>


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</TEXT>
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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>h14748exv99w1.htm
<DESCRIPTION>PRESS RELEASE
<TEXT>
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<TITLE>exv99w1</TITLE>
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<DIV style="font-family: 'Times New Roman',Times,serif">

<P align="left" style="font-size: 10pt"><IMG src="h14748quanta.gif" alt="(Quanta Services, Inc. Logo)">


<P align="right" style="font-size: 10pt"><B><I>PRESS RELEASE</I></B>



<P align="left" style="font-size: 10pt"><B>04-04<BR>
FOR IMMEDIATE RELEASE</B>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="1%">&nbsp;</TD>
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    <TD width="5%">&nbsp;</TD>
    <TD width="49%">&nbsp;</TD>
</TR>
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<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Contacts:
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">James Haddox, CFO<BR>
Reba Reid<BR>
713-629-7600
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Ken Dennard / ksdennard@drg-e.com<br>
Lisa Elliott / lelliott@drg-e.com<br>
DRG&#038;E / 713-529-6600</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>



<P align="center" style="font-size: 10pt"><B>Quanta Services Revises First Quarter Outlook</B>


<P align="left" style="font-size: 10pt"><B>HOUSTON &#151; April&nbsp;26, 2004 &#151; </B>Quanta Services, Inc. (NYSE: PWR) today announced
that after review of operating results, it has revised its loss per share
estimate for the first quarter ended March&nbsp;31, 2004. The first quarter was
impacted by adverse weather conditions, project delays and increased costs.
The first quarter loss is now expected to range from $0.10 to $0.11 per share,
down from prior guidance that ranged between a $0.04 to $0.07 loss per share.
Actual first quarter results will be released during the week of May&nbsp;3, 2004.



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Quanta management team will hold a conference call Tuesday, April&nbsp;27,
2004 at 9:00 a.m. eastern time to discuss the revised first quarter estimate.
To participate in the call, dial (303)&nbsp;262-2130 approximately ten minutes
before the call begins and request the Quanta Services conference call. A
replay of the call will be available approximately two hours after the live
broadcast ends and will be accessible for one week. To access the replay, dial
(303)&nbsp;590-3000 using a pass code of 578149.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Investors, analysts and the general public will also have the opportunity
to listen to the conference call over the Internet by visiting
http://www.quantaservices.com. To listen to the live call on the web, please
visit the company&#146;s web site at least fifteen minutes before the call begins to
register, download and install any necessary audio software. For those who
cannot listen to the live web cast, an archive will be available shortly after
the call.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Quanta Services, Inc. is a leading provider of specialized contracting
services, delivering end-to-end network solutions for electric power,
telecommunications and cable television. The company&#146;s comprehensive services
include designing, installing, repairing and maintaining network infrastructure
nationwide.


<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<P align="left" style="font-size: 10pt">This press release contains various forward-looking statements and information,
including management&#146;s expectations of its loss per share estimate for the
first quarter of 2004. Although the Company believes that the expectations
reflected in such forward-looking statements are reasonable; it can give no
assurance that such expectations will prove to have been correct. Such
statements are subject to certain risks, uncertainties and assumptions
including, among other matters, future growth in the electric utility and
telecommunications outsourcing industry, and the ability of Quanta to complete
acquisitions and to effectively integrate the operations of acquired companies,
as well as general risks related to the industries in which Quanta operates.
Should one or more of these risks materialize, or should underlying assumptions
prove incorrect, actual results may vary materially from those expected. For a
discussion of the risks, investors are urged to refer to the Company&#146;s reports
filed under the Securities Exchange Act of 1934.



<P align="center" style="font-size: 10pt"><I># # #</I>




<P align="center" style="font-size: 10pt">&nbsp;
</DIV>


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