SIGAL Construction Corporation has provided construction services in the Washington D.C. area since 1977. As one of the area's leading commercial construction firms, SIGAL has extensive experience in providing clients with preconstruction, general contracting, construction management, design/build and sustainable construction services. With its roots firmly established in interiors, SIGAL has been responsible for some of the most difficult and challenging tenant projects in the Washington D.C. area. Over the course of 30 years, SIGAL has built out millions of square feet of diverse tenant space for a variety of clients. These include several prestigious law firms, corporations, higher education facilities, as well as government agencies. SIGAL has preformed renovations of all types in the Washington, D.C. area. Whether the project was a major renovation, a historical renovation, an occupied renovation - or a unique combination, SIGAL has been know as an industry leader in modernizing complex projects. Many of these projects were accomplished in occupied buildings with SIGAL's commitment to minimizing disruption to ongoing building activities. Following continued success with interiors and renovations, SIGAL entered the base building market in the early 1980's. Since then, base building has become a staple of SIGAL's portfolio. SIGAL continues to perform preconstruction and construction services for some of D.C.'s landmark buildings. As an industry leader, SIGAL was a founding member of the US Green Building Council, and was part of the original committee that helped spearhead the US Green Building Council's LEED green building rating system. SIGAL's new offices in Arlington are LEED-CI Silver, which is the first LEED-CI project of any rating level in Arlington County, and SIGAL has extensive experience in helping clients incorporate LEED certifications into their buildings. SIGAL prides itself in providing award-winning service - receiving many local and national awards from the Associated Builders and Contractors, Washington Building Congress, the Associated General Contractors of America and others. For the past 15 years, The Washington Business Journal has ranked SIGAL in the Top Ten General Contractors of the Washington Metropolitan Area.