Onaka Gumi Co.,Ltd.

Onaka Gumi Co., Ltd., a Japan-based construction and environmental services company, operates as a prime contractor providing waste management, environmental remediation, and facility maintenance and repair services to U.S. military installations in Okinawa and the broader Pacific region. The company competes in full-and-open procurements without set-asides across 19 federal customer agencies, with no subcontracting footprint in the recent award record.

Onaka Gumi's capability portfolio centers on hazardous waste disposal, industrial waste management, environmental remediation, concrete and steel repair, facility demolition, and construction maintenance. The company holds three major indefinite-delivery vehicles anchoring its work. The $250 million multiple-award Design-Bid-Build MACC with the U.S. Department of the Navy (effective through June 27, 2029) funds small-to-medium construction, maintenance, and repair projects at Marine Corps Base Camp Butler and Commander Fleet Activities Okinawa, with recent work including a $3.87 million barracks renovation at White Beach, a $1.71 million demolition of Building 2407 at Camp Hansen, and a $3.94 million erosion and fence repair order at White Beach. The $7.8 million single-award IDIQ with Defense Logistics Agency Disposition Services (active through May 19, 2029) covers removal, transportation, recycling, and disposal of industrial waste, hazardous substances, and per- and polyfluoroalkyl substances in and around Okinawa. A third IDIQ with the U.S. Army Corps of Engineers for construction, maintenance, and repair services in Okinawa adds $95 million in capacity. Representative recent delivery orders include $49,615.89 for waste management and environmental remediation from DLA Disposition Services (June 2026), $906,000.01 for swimming pool lining replacement at Camp McTureous (June 2026), and a $7.7 million Pacific Air Forces definitive contract for concrete crack and spall repair (October 2025).

Customer concentration by award count is broad: Defense Logistics Agency Disposition Services leads with 406 awards (23% of recent activity), but by potential value the concentration is more concentrated. The top five customers by potential value account for 98% of combined potential value, led by the Marine Corps (110 awards, $1.18 billion), the Army Corps of Engineers Engineering District Japan (26 awards, $164.2 million), and Pacific Air Forces (72 awards, $158.7 million). This split reflects Onaka Gumi's role as a high-volume, small-order vendor to DLA Disposition Services alongside its capacity as a major contractor for larger design-build and infrastructure repair projects through the Navy and Air Force.

Onaka Gumi's vehicle holdings demonstrate extensive reach. The IDC SP450019D0004 generated 331 task orders; the Pacific Air Forces F6232100D0008 contract produced 109 task orders; the DLA single-award IDIQ SP450024D0005 generated 73 task orders; the NAVFAC Okinawa Japan Construction 2013–2018 vehicle yielded 52 task orders; and the Navy contract N6283602D2006 produced 51 task orders. Activity was strongest in 2022 with 82 awards, declining to 18 awards year-to-date in 2026. The next twenty-four months include 26 awards with ultimate completion dates worth a combined $26.2 million in potential recompete exposure.

Onaka Gumi registered with the System for Award Management in May 2005 and operates as a for-profit construction and environmental services company based in Okinawa, Japan, with demonstrated substantial experience supporting U.S. military infrastructure and logistics needs throughout the Pacific theater. The vendor holds no identified subcontracting relationships and competes exclusively as a prime contractor. Work is performed entirely in Japan, primarily Okinawa Prefecture, with administrative oversight remaining with Pacific-based military commands. The company's footprint is concentrated on hazardous waste treatment and disposal (406 awards), specialty trade contracting (201 awards), and building construction (112 awards by NAICS), operating across housekeeping and waste treatment (406 awards) and facility maintenance and repair (145 awards by PSC).