C & S Building Services Inc.

C & S Building Services Inc., a small-business Subchapter S corporation based in Amityville, New York, delivers mechanical operations, HVAC building management, and facility maintenance services to federal agencies as a prime contractor (100% of recent awards), competing predominantly under full-and-open procurement with selective Total Small Business set-aside designations. The vendor operates a single, highly concentrated customer relationship with the Department of the Interior National Park Service Northeast Region, which accounts for 71% of recent awards ($134.4 million combined potential value) across 38 prime contracts and indefinite-delivery vehicles.

C & S Building Services Inc.'s federal footprint centers on mechanical and facilities operations at the Statue of Liberty and Ellis Island National Monuments in New York Harbor. The vendor holds a five-year, $45 million single-award indefinite-delivery contract (awarded September 4, 2026, running through September 3, 2031) for mechanical operations and maintenance services under Total Small Business set-aside, with 24/7 boiler operations, seasonal chiller operations, water chemical conditioning, and special event support as core service lines. The contract requires the site manager to hold a Mechanical Professional Engineer license, with key personnel non-substitutable during the first 180 days except for illness, death, or termination. Work is performed at Liberty Island and Ellis Island, plus screening facilities at Liberty State Park, New Jersey and Battery Park, New York. As of September 25, 2026, two delivery orders have been issued under this IDIQ: a $5.9 million order for monthly mechanical operations and maintenance services and a $25,000 order for special event services, both concluding September 3, 2027. The vendor also operates under two prior indefinite-delivery vehicles carrying 17 and 15 task orders respectively, totaling approximately $1.3 million in combined potential value across smaller, shorter-term engagements.

Recent definitive contracts from the Northeast Region show sustained monthly and bridge-contract activity, with awards ranging from $396 thousand to $760 thousand, priced firm fixed-price and spanning February 2025 through September 2026. The vendor competes without small-business set-aside designation on most definitive contract procurements, though the 2026 IDIQ anchor was awarded under Total Small Business set-aside. The vendor's NAICS footprint reflects its operations-focused scope: Plumbing, Heating, and Air-Conditioning Contractors (25 awards), Facilities Support Services (19 awards), and Commercial and Industrial Machinery and Equipment Repair and Maintenance (19 awards). The top parent vehicles are three indefinite-delivery contracts (C1940020001, INP08PC75167, and 140P4526D0001) supporting the Statue of Liberty and Ellis Island maintenance mission. Activity has accelerated in the last two years — one award in 2020, growing to eight awards in 2026 — with only two awards ($5.9 million combined potential value) reaching ultimate completion inside the next twenty-four months, indicating minimal recompete cliff exposure before the 2031 IDIQ ceiling date. The vendor serves one secondary customer — the Department of Homeland Security U.S. Coast Guard ($254 thousand) — but this relationship remains peripheral to the NPS Northeast Region concentration.

C&S provides multidisciplinary outsourced facility and property related services consisting of management-service maintenance agreements-facility staffing-project and construction management-general contracting-HVAC and mechanical contracting.