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GbOSS is 8(a) Certified and offers General Contracting and Construction Management Services to Federal clients.

With offices in Chambersburg, PA, Herndon, VA, Pittsburgh, PA, and Morgantown, WV, we perform work throughout the mid-Atlantic and Pacific Northwest regions of the United States.

GbOSS provides economic value through total solution integration with our qualified and highly skilled engineers and construction team. We currently hold IDIQ MACC contracts with the Department of Energy National Energy Technology Lab, U.S. Army Letterkenny Army Depot, Tobyhanna Army Depot and Joint Base Andrews and Joint Base Anacostia-Bolling.

Our highly qualified staff are skilled specialists with the expertise to implement proprietary solutions in a prompt and cost-effective manner.

What Our Clients Say

“(GbOSS) was very good in meeting all project requirements. Project was very well managed.”

Raymond J. Porter, Lead Contracting Officer
General Services Administration

“The project management team did an excellent job communicating with the COR throughout the duration of the project, including the shutdown.”

Kirk Swiantek, Contracting Officer
National Guard Bureau-AQ-C

“Contractor went above and beyond, installing or adding items to the project that increased efficiency, constructability and longevity.”

Jerry Perry, Contracting Officer
US Fish and Wildlife Service