SG Engineering Inc.

SG Engineering Inc., a for-profit limited liability company based in Ginowan, Okinawa, Japan, delivers architect-engineer services and facility infrastructure support to the U.S. Department of Defense as a prime contractor exclusively — 100% of its federal award portfolio comprises prime awards, with no subcontract activity. The vendor operates without SBA set-aside certifications and competes full-and-open across all awards.

SG Engineering's entire federal footprint is concentrated in Japan, supporting U.S. military installations under Status of Forces Agreement (SOFA) acquisition programs. The company holds a $49 million multiple-award Indefinite Delivery Contract with the U.S. Army Corps of Engineers, Japan District (ENDIST Japan) running through September 2027 for architect-engineer services supporting host nation construction programs and Department of Defense facilities. Representative delivery orders under this vehicle include a $273,348.67 order for the Facilities Improvement and Relocation Program criteria package at the Naha Communications Center (awarded May 2024, completing July 2025), a $214,361.20 order for military working dog facility basic criteria package preparation at Camp Zama (awarded December 2023), and a $209,357.58 order for hazardous waste area facility criteria package preparation at Yokosuka Naval Base (awarded December 2024, completing November 2025). SG Engineering also operates under a $10 million single-award IDIQ with Navy Installations Command through October 2029 for electrical services and post-construction award support, exemplified by a $228,247.85 delivery order for critical power upgrade post-construction services at Commander Fleet Activities Okinawa (awarded September 2022, completing October 2026). Recent Marine Corps awards include a $817,693.27 delivery order for Marine Corps Base Headquarters Building 1 repairs at Camp Foster (awarded June 2022, completing May 2026), a $115,313.94 order for MACS-4 G/ATOR maintenance facility repairs at Marine Corps Air Station Futenma (awarded April 2024), and a $67,387.50 order for concrete pad construction at Radar Hill, MCAS Futenma (awarded April 2024).

Customer concentration among DoD agencies is dominant: the Department of the Army Corps of Engineers accounts for 63 awards worth $56.8 million combined potential value, the Marine Corps accounts for 35 awards worth $15.8 million, and the Navy (Naval Facilities Engineering Command) accounts for 8 awards worth $12 million — together representing 98% of combined potential value. The Air Force holds a secondary position with 42 awards across two organizations. Work scope centers on engineering services (95 awards) and architectural services (77 awards), predominantly under PSC code A/E-General (Landscaping, Interior Layout, and Designing), 174 awards. Activity has been episodic: three awards in 2021, four in 2022, two in 2023, four in 2024, and one in 2026. Combined potential value across 216 prime awards totals $92.6 million, with $18.3 million obligated to date. Only three awards with a combined potential value of $393 thousand reach ultimate completion inside the next twenty-four months, creating minimal near-term recompete exposure. SG Engineering's SAM.gov registration dates to 2004, establishing over two decades of continuous federal contracting presence supporting U.S. military facility infrastructure in the Japanese theater.