This is a pre-solicitation notice for HVAC and building system upgrades across five buildings at Misawa Air Base in Japan, with an estimated project magnitude between ¥2.5 and ¥10 billion Yen. The scope includes replacing HVAC systems, structural modifications, transformer upgrades, and associated site work. The procurement will first prequalify local sources, defined as entities physically located and legally authorized to perform construction in Japan. Following prequalification, an Invitation for Bid will be issued only to those prequalified sources. Interested bidders must possess a specific Japanese civil or architectural construction license verified through a government website by the prequalification due date.