Sigma International Construction LLC

Sigma International Construction LLC 1962 Division, doing business as Sigma International Construction, is a for-profit limited liability company based in Gainesville, Virginia, that delivers specialized construction, maintenance, and repair services for U.S. diplomatic facilities overseas as a prime contractor (100% of recent awards), competing in full-and-open federal procurements with no set-aside designations.

Sigma's customer base is entirely within the Department of State and narrowly concentrated by geography and mission. The three funding bureaus account for 100% of recent awards: the Bureau of Diplomatic Security holds the largest potential-value share at $2.6 million across three awards, the Bureau of Overseas Building Operations carries $1.1 million across two awards, and the Bureau of Near Eastern Affairs anchors activity volume with twelve awards totaling $448 thousand in combined potential value. All work is routed to U.S. Embassy Baghdad and related facilities in Iraq. The capability portfolio centers on water and sewer line infrastructure, plumbing and HVAC systems, emergency repairs, and security-related construction — particularly T-wall barrier foundations and installation. Representative prime contracts include a $2.07 million firm fixed-price definitive contract from the Bureau of Diplomatic Security (awarded October 18, 2024, completion February 15, 2026) for construction of foundations and manufacturing and installation of T-wall barriers around the East End Housing at the U.S. Embassy compound in Baghdad; a $1.06 million contract from the Bureau of Overseas Building Operations (awarded January 26, 2026, completion July 31, 2026) for general construction works in Iraq; and a $546 thousand contract from the Bureau of Diplomatic Security (awarded July 22, 2022, completion September 18, 2023) for Capital Security Program construction services at the U.S. Embassy Baghdad.

Activity has been episodic over the source window — five awards in 2022, one in 2023, two in 2024, three in 2025, and one in 2026 — with only one award (the $1.06 million Bureau of Overseas Building Operations contract) facing completion within the next twenty-four months. Sigma does not operate as a subcontractor; all seventeen awards in the portfolio are prime contracts. The vendor carries no parent contract vehicles, GWACs, or BPAs; work flows through direct task orders and definitive contracts issued by State Department contracting offices. Combined obligated value across all awards is $4.2 million, fully funded.

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