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                                                                    EXHIBIT 23.5


                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


As independent public accountants, we hereby consent to the use of our report
dated February 5, 1999, on the financial statements of Bonneville Construction
Company, Inc. as of and for the year ended December 31, 1998 included in this
Form 8-K of Quanta Services, Inc. It should be noted that we have not audited
any financial statements of Bonneville Construction Company, Inc. subsequent to
December 31, 1998 or performed any audit procedures subsequent to the date of
our report.

McGladrey & Pullen, LLP

Las Vegas, Nevada
October 27, 1999