The Keystone Plus Construction
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The Keystone Plus Construction Corporation is a Washington, D.C.-based general contracting firm established in 1989. We specialize in construction management, general contracting, and self-performed subcontracting services for government agencies, developers, universities, and private clients. With over $375 million in completed projects and annual revenues ranging from $20 to $30 million, Keystone has built a solid reputation for delivering high-quality construction solutions across the region.

Recognized as one of the “Top 500 Largest Hispanic Companies in the US” by Hispanic Business Magazine and a “Top 100 Minority Business Enterprise” by the Capitol Region Minority Supplier Development Council, Keystone is a Certified Business Enterprise with multiple designations, including LBE, SBE, DBE, DZE, and ROB. Our featured projects include the LEED Silver-certified Peabody Elementary School on Capitol Hill, a design-build initiative completed for the D.C. Department of General Services.