JOHN C. GRIMBERG CO., INC.

John C. Grimberg Co., Inc. specializes in the construction and full-scale restoration of commercial and institutional facilities, with deep expertise in mission-critical infrastructure for defense and federal agencies. The company delivers comprehensive building services including structural renovations, fire alarm and sprinkler system upgrades, electrical system modernizations, and facility consolidation projects—often under tight operational constraints. Their work on U.S. Army Reserve Centers, vehicle maintenance facilities, and federal office buildings demonstrates proficiency in navigating complex regulatory environments, coordinating with military and civilian stakeholders, and executing phased construction with minimal disruption to ongoing operations. Key differentiators include experience with retrofitting aging federal structures to meet current building codes, managing multi-phase option exercises, and executing precise modifications to existing systems without compromising functionality. The contractor maintains a consistent relationship with the Department of Defense, delivering construction and renovation services for military installations across Virginia and beyond, including upgrades to operational facilities, barracks, and support infrastructure. They have also completed projects for the General Services Administration and the Department of Health and Human Services, demonstrating adaptability across federal mission sets—from secure military operations centers to biomedical research facilities. Their primary focus is on NAICS 236220, which encompasses the construction of non-residential buildings such as administrative offices, medical facilities, and military support structures. This positions them as a niche player in federal institutional construction, particularly in the renovation and modernization of legacy federal assets rather than new ground-up builds. As a small business structured as a 2L entity based in Rockville, Maryland, John C. Grimberg Co., Inc. operates with a focused regional footprint centered on the Mid-Atlantic federal corridor. While no formal government certifications are listed, their consistent award history reflects a strong reputation for technical execution and reliability in high-stakes federal construction environments.