Otsuki Sekkei Co., LTD.

Otsuki Sekkei Co., LTD. is a Japanese architectural and engineering firm headquartered in Shimabuku, Kitanakagusuku, Nakagami District, Okinawa, Japan. The company has been registered with SAM.gov since January 22, 2006, and maintains current registration through July 16, 2026. As a for-profit corporate entity, Otsuki Sekkei specializes in providing comprehensive architect-engineer services to the U.S. federal government, with a particular focus on supporting U.S. military infrastructure projects throughout Japan. The firm has established itself as a trusted partner for the Department of Defense, providing design, engineering, construction, and facilities management support services across multiple U.S. military installations in the Pacific region.

Otsuki Sekkei Co., LTD. has demonstrated extensive experience delivering architect-engineer and construction services through its prime federal contract awards, which have been funded exclusively by the U.S. Army Corps of Engineers Engineering District Japan (ENDIST Japan) and the Department of the Air Force Pacific Air Forces. The company's delivery orders have ranged from $134,555.29 to $324,667.88 and have encompassed diverse project types, including preparation of Basic Criteria Packages for facility improvements, construction of maintenance facilities at Kadena Air Base, repair of runway and taxiway infrastructure at Kadena Air Base, and design work for a United Services Organizations facility at Camp Foster and a multi-use path at Camp Schwab. These contracts have been firm fixed-price delivery orders with completion dates extending through 2027, and none have been subject to small business or socioeconomic set-asides. Additionally, Otsuki Sekkei has served as a subcontractor on engineering services projects, receiving sub-awards in October 2023 under Jacobs Government Services Co and in April 2022, demonstrating its role within larger contractor teams providing specialized technical expertise.

Otsuki Sekkei Co., LTD. holds a significant $49 million multiple-award indefinite delivery contract with the U.S. Army Corps of Engineers Engineering District Japan, effective from September 9, 2022 through September 8, 2027. This indefinite delivery contract was awarded without set-aside designations and authorizes ENDIST Japan to issue task orders on an as-needed basis for architect-engineer services supporting host nation funded construction projects and internal district requirements across various locations at U.S. military installations throughout Japan. The contract enables the firm to provide design, engineering, construction support services, and preparation of basic criteria packages for facilities across the U.S. military footprint in Japan. At least three documented delivery orders have been executed under this vehicle, totaling approximately $637,894 in awards issued between June 2024 and September 2025, reflecting ongoing reliance on Otsuki Sekkei's capabilities for mission-critical military infrastructure support in the Pacific region.