Izumi Sohken Engineering Co.,Ltd.

Izumi Sohken Engineering Co., Ltd. is a Japanese architectural and engineering firm based in Tokyo that has been registered to receive federal contract awards since April 2004. The company operates as a for-profit corporate entity and maintains a self-certified HUBZone joint venture designation. Izumi Sohken Engineering specializes in providing architect-engineer services to support U.S. military construction and infrastructure projects at Department of Defense installations throughout Japan, with a particular focus on designing facilities that integrate U.S. military standards with local Japanese construction methodologies and materials.

Since 2022, Izumi Sohken Engineering has received multiple firm-fixed-price delivery orders funded by the U.S. Army Corps of Engineers, Japan District (ENDIST Japan) under the Status of Forces Agreement acquisition program. These delivery orders have included a $346,418.80 contract awarded in July 2025 for architect-engineer services supporting Bachelor Enlisted Quarters construction at Camp Foster in Okinawa, with completion targeted for March 2026; a $364,330.70 contract awarded in September 2024 for a vehicles maintenance building at Kadena Air Base in Okinawa, scheduled for completion in July 2026; a $322,333.92 contract awarded in November 2023 for a fiscal year 2024 construction market survey across various locations in Japan, completed in July 2024; and a $138,761.32 contract awarded in November 2023 for preparation of a criteria package for a water main line construction project at Camp Fuji in Shizuoka, completed in September 2024. None of these delivery orders utilized set-aside designations. Additionally, Izumi Sohken Engineering has served as a subcontractor under HDR Engineering, Inc., receiving sub-awards totaling approximately $199,090 for professional architectural, structural engineering, and mechanical engineering services related to military facility repairs and construction projects in Japan, including work on unit maintenance facilities and water distribution system repairs.

Izumi Sohken Engineering holds a $49 million multiple-award indefinite delivery contract with the U.S. Army Corps of Engineers, Japan District, effective from September 9, 2022, through September 8, 2027, with no set-aside designation applied. This IDV procures architect-engineer services to support host nation construction programs and Japan District internal requirements at various locations throughout Japan, encompassing the preparation of design criteria packages for military construction projects adapted to incorporate U.S. Department of Defense standards with local Japanese construction methods and materials. The solicitation for this contract, posted in September 2020, sought architect-engineer firms capable of executing concurrent host nation construction projects and establishing joint ventures with U.S. and Japanese partners to support an indefinite quantity of criteria packages across military installations. The four delivery orders executed under this IDV to date total approximately $1.17 million and represent the primary mechanism through which Izumi Sohken Engineering delivers services to the federal government, with all task orders issued by ENDIST Japan and currently scheduled through 2026.