1 EX-23.13 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report, dated May 13, 1999, on the financial statements of Valentine Electrical, Inc., by reference into Integrated Electrical Services, Inc.'s Amendment No. 3 to Form S-4 File No. 333-75139), and to all references to our firm. REZNICK FEDDER & SILVERMAN Charlotte, North Carolina May 27, 1999