A family-owned and operated company, the John C. Grimberg Co. Inc. has served the Mid-Atlantic region providing complete general and mechanical contractor services to federal, state, and private offices since its founding in 1951.
One of the largest mechanical contractors in the Washington, DC area with a proven record with high profile clients and projects.
We have a management team to perform takeover projects for bonding agencies. Our management has the capability to perform Indefinite Quantity (IDIQ) contacts (Grimberg has extensive IDIQ contract experience with the Navy, FBI, GSA, NIH, National Gallery of Art, DC Air National Guard, and Architect of the Capitol).
- AGC: Associated General Contractors
- MCA: Mechanical Contractors Associations
- CFMA (Construction Financial Management Association)
- Greater Washington Board of Trade
- Washington Building Congress
- Association of Energy Engineers
- Local Union 602 (Washington, DC): Steamfitters
- Local Union 005 (Washington, DC): Plumbers
- Local Union 486 (Baltimore): Steamfitters and Plumbers