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. U.S. Fish and Wildlife Service (FWS) recently awarded the John C. Grimberg Co. a contract for the US Fish and Wildlife MATOC Construction Services in the Continental US and Hawaii for DOI, USFWS, NPS, BLM and FS. The John C. Grimberg Co. received the 2022 AGC Washington Contractor Award: Best Lean for Tenant Improvements Project, Consumer Financial Protection Bureau, Washington, DC
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.