Based out of Manassas, across from the Broad Run Golf and Practice Facility, KGS Construction Services has been providing construction services to the Metro D.C. area since 2004. KGS specializes in roofing and waterproofing, architectural sheet metal fabrication and installation, concrete and masonry restoration, leak investigation/repair, and general contracting. The business primarily provides its services to commercial and industrial property owners, real estate investment trusts, property management firms, architects and engineering consultants. KGS is a member of the National Roofing Contractors Association, and is licensed by many product suppliers.