A General Contractor Serving the Washington, DC Metropolitan Area Since 1951
About Us News Awards

A family-owned and operated company, the John C. Grimberg Co. has served the Mid-Atlantic region providing complete general and mechanical contractor services to federal, state, and private offices since its founding in 1951.

The Department of the Navy (NAVFAC Washington) recently awarded the John C. Grimberg Co. a $13.1 million contract to renovate its U.S. Naval Academy Historic Halligan Hall, Annapolis, Maryland.

The John C. Grimberg Co. received the 2016 AGC Washington Contractor Award: Renovation/Restoration Projects $30-$50 Million Category for the Refrigeration Plant Revitalization US Capitol Power Plant, Washington, DC. more

A Unique Commitment to Green Construction

Via in-house Leadership in Energy and Environmental Design (LEED) construction expertise and a unique commitment to sustainable principles, the John C. Grimberg Co. specializes in delivering state-of-the-art, high-performance facilities and systems that meet and exceed LEED Green Building objectives.