ISEC serves both public and private owners, as well as general contractors. In business for over 40 years, we have worked with an impressive, and constantly growing, list of clients. With over 80% of our business coming from repeat clients, we are extremely proud of the record of quality results we have established. Here are just a few of our many valued clients.

• Adolfson & Peterson Construction Co.
• Amgen, Inc.
• Center for Disease Control - CDC
• Balfour Beatty Construction
• Clark Construction Group, Inc.
• DPR Construction, Inc.
• Gilbane Construction Company
• Gould Evans Associates, L.C.
• Hathaway Dinwiddie Construction Co
• HDR Engineering
• Hensel Phelps Construction Co.
• Hunt Construction Group
• Kiewit Construction Company
• Kitchell Construction Company, Inc.
• McCarthy Building Companies
• Mortenson
• National Institute of Health
• NBBJ Architects
• PCL Construction
• Rudolph and Sletten
• Smith Group Inc.
• Sundt Corporation
• Turner Construction
• Tutor-Saliba Corporation
• University of California