NPK Co.,Ltd.

NPK Co.,Ltd., a Japan-based for-profit construction and facilities services contractor operating as a prime contractor (100% of awards), delivers infrastructure maintenance, repair, renovation, and construction services to U.S. military installations across Japan, with no subcontracting footprint and no SBA set-aside participation.

NPK Co.,Ltd. is the English-language registered name of Nippi Kosan Co., Ltd., a Japanese organization headquartered in Yokohama, Kanagawa. The vendor operates exclusively as a prime contractor on full-and-open federal awards, competing without small business set-aside designation. Primary NAICS concentration sits with air-conditioning and heating equipment manufacturing (202 awards), foundation and building exterior contracting (190 awards), and facilities support services (186 awards); PSC work clusters in housekeeping and facilities operations (198 awards), building construction and miscellaneous structures (121 awards), and mechanical systems maintenance (87 awards).

Navy Installations Command dominates the customer base, anchoring 538 awards with $231.5 million in combined potential value, followed by the Department of the Navy (483 awards, $730.1 million) and Naval Facilities Engineering Command (193 awards, $129.7 million)—together these three Navy entities represent 89% of award volume. The Department of the Air Force Pacific Air Forces and Department of the Army Installation Management Command Pacific Region round out the active set at 23 and 57 awards respectively, but Pacific Air Forces carries outsized dollars at $1.16 billion combined potential value (ranking first by value despite low award count), signaling large single infrastructure projects. Recent representative work includes a $4.76 million repair of a sewage treatment plant at Sagamihara Family Housing Area (Army, July 2025), a $5.93 million repair of officer quarters at Camp Zama (Army, June 2023), a $4.13 million wastewater treatment plant repair at Sagami General Depot (Army, June 2024), and multiple Navy facility projects ranging from $109 thousand (exterior staircase replacement, August 2022) to $1.5 million (townhouse kitchen remodel, September 2022).

NPK Co.,Ltd. holds multiple parent indefinite-delivery vehicles. The Design-Bid-Build Mini-MACC for Kanto Plains Operational Area, Japan, a $40 million Navy IDIQ awarded through March 2030, anchors the largest transaction volume (86 task orders documented in source data). The $990 million MACC for U.S. Army Installations within Honshu, Japan and Yokota Air Base, extending through May 2030, generates significant delivery orders for renovation and infrastructure repair. A newly awarded $49 million Navy IDIQ (NAVFAC Far East MINI MACC Kanto Plains, awarded March 4, 2025) commenced with a firm fixed-price delivery order to NPK of $2,058.56 for a minimum guarantee requirement, suggesting active contracting posture and continued Navy task order demand. Additional parent vehicles include Army and Air Force construction MACCs at various installations across the region.

Activity is moderate but recurrent. The source spans from 1993 to April 2026, with 1,463 total prime awards and a combined potential value of $2.57 billion across all federal sources. Recent annual volume shows 9 awards (2022), 5 (2023), 11 (2024), 5 (2025), and 1 (2026 year-to-date), indicating steady but not accelerating demand. Three awards (combined potential value $6.9 million) reach ultimate completion within the next twenty-four months, representing modest recompete exposure. Combined dollars obligated across the portfolio stand at $218.6 million (8% of potential value), reflecting the indefinite-delivery nature of most vehicles and typical progress payment phasing on construction work.

Place of performance for all work is Japan—specifically military installations throughout Honshu, Yokota Air Base, the Kanto Plains region, and Yokosuka. NPK Co.,Ltd. operates exclusively within the Pacific theater and has maintained federal contractor registration since at least 2004, positioning it as a stable, locally-embedded vendor for U.S. defense infrastructure maintenance in forward-deployed locations.