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. National Institute of Health recently awarded the John C. Grimberg Co. a $2.2 million contract to renovate its Sterility Laboratory at NIH Campus, Bethesda, Maryland. The John C. Grimberg Co. received the 2019 AGC Washington Contractor Award: Heavy/Industrial Projects $1-15 Million Category for Dalecarlia Chemical Building Electrical Upgrades, Washington Aqueduct, Washington D.C.
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.