Cornerstone Construction Services, LLC

Cornerstone Construction Services, LLC, a Service-Disabled Veteran-Owned Small Business (SDVOSB) headquartered in Woburn, Massachusetts, operates as a prime contractor delivering general construction, facility renovation, mechanical systems work, and infrastructure maintenance to federal agencies across the Northeast and nationwide. The company competes predominantly under Total Small Business and SDVOSB set-asides; SDVOSB designations anchor most of its prime footprint, with VOSB certifications valid through October 15, 2027.

Cornerstone's concrete capability portfolio centers on building systems replacement and renovation—HVAC systems, boiler and chiller replacement, electrical infrastructure, plumbing, roofing, fire safety systems, and structural repairs—executed as delivery orders and definitive contracts across GSA facilities, VA medical centers, FAA air traffic control infrastructure, and Department of Interior public lands. Representative work includes a $11.5 million HVAC system replacement at 11 Murphy Drive in Nashua, New Hampshire (GSA, April 2023, SDVOSB sole-source); a $6.26 million boiler replacement at the U.S. Merchant Marine Academy in Kings Point, New York (July 2023, SDVOSB sole-source); a $5.09 million remediation and restoration project also in Nashua (December 2023, SDVOSB sole-source); and a $3.999 million generator building deficiency correction at a VA facility in Leeds, Massachusetts (VA VISN 1, December 2025). Across SCI-reportable service contracts, Cornerstone invoiced $48.8 million from FY2022 through FY2025, with SCI-reported FTE delivery reaching 5.2 FTEs in FY2025, though government-paid hourly rates ranged from a 10th percentile of $10.96/hr to a 90th percentile of $1,839.09/hr, reflecting heavy equipment and labor-intensive work.

Customer concentration is pronounced. GSA Region 1 Public Buildings Service leads by award count with 93 awards worth $721 million in combined potential value, followed by the Federal Aviation Administration Headquarters with 30 awards carrying $2.04 billion—a strong divergence that reflects FAA's $999.999 million Basic Ordering Agreements anchoring the dollar value despite lower order volume. The Department of Veterans Affairs VISN 1, the Department of the Interior National Park Service Northeast Region, and the Department of the Navy round out the top five. Together, these five agencies account for 76% of Cornerstone's combined potential value across 440 awards.

Cornerstone holds six named parent vehicles positioning it for sustained federal capture. The FAA Basic Ordering Agreement established July 5, 2023, carries a $999.999 million ceiling through July 2, 2033, for design/build and bid/build Air Traffic Control facility construction across Eastern, Central, Western, and Alaska regions. Three GSA Region 1 Construction IDIQs—$125 million each for North, Boston, and South Zones (awarded September 27, 2023, through September 26, 2028)—are designated Total Small Business set-asides and anchor Cornerstone's heaviest order flow by volume. A $100 million VA VISN 1 New England Healthcare System Construction MATOC (October 9, 2024, through November 11, 2029) serves VA facility work across New England. A $250 million Great American Outdoors Act MATOC (January 1, 2022, through June 30, 2027, extended via Executive Order 14398) covers alteration, repair, and construction across Department of Interior and Forest Service public lands nationwide. A $500 million GSA EVSE (Electric Vehicle Supply Equipment) IDIQ (September 1, 2022, through August 31, 2027) supports EV charging infrastructure at federal facilities. A $20 million Air Force Materiel Command MACSPO IDIQ (March 9, 2023, through March 8, 2028) covers maintenance, repair, alteration, and minor construction at Hanscom Air Force Base and other locations. Across these vehicles, task-order activity has remained steady but declining—25 awards in 2022 down to 14 in 2026—with 13 awards (combined potential value $20.5 million) reaching ultimate completion within the next twenty-four months, exposing the vendor to significant recompete pressure.

Cornerstone operates as a 100% prime contractor; the source contains no record of subcontract work. However, across SCI-reportable prime contracts, the vendor engages subcontractors for 51% of total contractor hours on average, drawing on a network of 151 named subs. Named recurring subcontractors include B L Mechanical Inc. (mechanical and HVAC work), Angelo Sassi & Son Plumbing & Heating, Mike's Electric (electrical), ESC Construction LLC (electrical, communications, fire alarm, security), Hearth and Stone Restoration LLC (excavation and concrete), and Structural Preservation Systems LLC (concrete repair and waterproofing). This reliance on subs reflects Cornerstone's model as a general contractor integrating specialized trades rather than as a vertically integrated builder.

Work is performed at multiple locations across the continental United States with particular concentration in Northeast federal facilities—Boston, New York, Massachusetts, Vermont, New Hampshire, Maine, and Rhode Island dominate the geographic footprint—though FAA and Interior contracts extend delivery obligations nationwide. The commercial and institutional building construction NAICS code (236220) accounts for 269 of 440 awards, with industrial building construction, oil and gas pipeline structures, and heavy civil engineering rounding out secondary categories. Repair and alteration of office buildings dominate the PSC profile, followed by facility maintenance and infrastructure restoration work.

Cornerstone is a construction, environmental and engineering firm committed to providing clients with cost effective, quality construction and professional services. We are dedicated to the needs of our clients and maintain a high standard on safety.