UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: June 22, 2004 Commission File No. 001-13783 INTEGRATED ELECTRICAL SERVICES, INC. (Exact name of registrant as specified in its charter) DELAWARE 76-0542208 (State or other jurisdiction of (I.R.S. Employer Identification No.) incorporation or organization) 1800 West Loop South Suite 500 Houston, Texas 77027 (Address of principal executive offices) (zip code) Registrant's telephone number, including area code: (713) 860-1500

ITEM 7. EXHIBITS (C) Exhibits Exhibit No. Description ----------- ----------- 99.1 Press Release dated June 22, 2004. ITEM 9. Regulation FD Disclosure On June 22, 2004 Integrated Electrical Services, Inc. issued a press release announcing revised guidance for the fiscal third quarter ended June 30, 2004. The press release is attached as an exhibit hereto.

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Current Report to be signed on its behalf by the undersigned, thereunto duly authorized. INTEGRATED ELECTRICAL SERVICES, INC. By: /s/ Jeffrey Pugh ------------------------------- Jeffrey Pugh Senior Vice President and Chief Financial Officer Dated: June 22, 2004

EXHIBIT INDEX Exhibit No. Description - ----------- ----------- 99.1 Press Release dated June 22, 2004.

Exhibit 99.1 (INTEGRATED ELECTRICAL SERVICES, INC. LOGO) NEWS RELEASE Contacts: Jeffrey Pugh, CFO Integrated Electrical Services, Inc. 713-860-1500 FOR IMMEDIATE RELEASE Ken Dennard / ksdennard@drg-e.com Karen Roan / kcroan@drg-e.com DRG&E / 713-529-6600 INTEGRATED ELECTRICAL SERVICES REVISES FISCAL THIRD QUARTER OUTLOOK HOUSTON -- JUNE 22, 2004 -- Integrated Electrical Services, Inc. (NYSE: IES) today announced that based on preliminary review, it has revised its financial outlook for the fiscal third quarter ending June 30, 2004. IES now expects fiscal third quarter earnings to range between $0.04 and $0.07 per diluted share, down from prior guidance of $0.10 to $0.17 per share. The revised estimate includes estimated charges of $0.03 per share from the write-off of a receivable related to one customer that was determined to be uncollectible in the quarter, and losses of approximately $0.03 per share on three underperforming subsidiaries. The three underperforming subsidiaries are being merged into other subsidiaries to improve their performance and lower IES' overall cost structure. Additionally, IES continues to experience margin pressure from the increase in copper, steel and gasoline prices and believes the impact will be approximately $0.08 to $0.09 during the third quarter which is within the range indicated when the initial third quarter guidance was provided. Updated fourth quarter and full year guidance will be provided on IES' third quarter conference call when actual fiscal third quarter results are released during the week of August 2, 2004. Roddy Allen, IES' President and CEO, stated, "The third quarter will be below our prior expectations due to the write-off of the receivable and the underperforming businesses. Revenues through May remain consistent with last year's performance and selling general and administrative expenses are continuing to trend lower compared to the third quarter one year ago both in terms of total dollars and as a percentage of revenues. We continue to work very hard to manage the increased copper, steel and gasoline costs and now have them incorporated in our pricing on new projects; however the full effects of these changes will not be realized until some of our existing projects are completed." Integrated Electrical Services has scheduled a conference call for Wednesday, June 23, 2004 at 9:00 a.m. eastern time to discuss the revised guidance. To participate in the conference

call, dial (303) 262-2190 at least ten minutes before the call begins and ask for the Integrated Electrical Services conference call. A replay of the call will be available approximately two hours after the live broadcast ends and will be accessible until June 30, 2004. To access the replay, dial (303) 590-3000 using a pass code of 11001378. Investors, analysts and the general public will also have the opportunity to listen to the conference call over the Internet by visiting www.ies-co.com. To listen to the live call on the web, please visit the company'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. Integrated Electrical Services, Inc. is a leading national provider of electrical solutions to the commercial and industrial, utility, residential and service markets. The company offers electrical system design and installation, contract maintenance and service to large and small customers, including general contractors, developers and corporations of all sizes. This press release includes certain statements, including statements relating to the Company's expectations of its future operating results that may be deemed to be "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on the Company's expectations and involve risks and uncertainties that could cause the Company's actual results to differ materially from those set forth in the statements. Such risks and uncertainties include, but are not limited to, the inherent uncertainties relating to estimating future results, fluctuations in operating results because of downturns in levels of construction, incorrect estimates used in entering into fixed price contracts, difficulty in managing or merging the operations of existing entities, the high level of competition in the construction industry, interest rate changes, general level of the economy, changes in the level of competition from other major electrical contractors, price changes in the cost of labor, increases in the cost of steel, copper and other products used in the electrical industry, the cost and availability of surety bonding and bonding capacity and due to weather. The foregoing and other factors are discussed and should be reviewed in the Company's filings with the Securities and Exchange Commission, including the Company's Annual Report on Form 10-K for the year ended September 30, 2003. # # #