Shinnihon Corporation is a construction company based in Chiba, Japan, founded in 1923. It engages in contract construction, planning, design, management, and construction of civil engineering and building projects. The company also provides consulting for regional and urban development and environmental improvement, as well as real estate buying, selling, leasing, and brokerage. Additionally, it offers financial instruments, investment advisory and agency services, and manages land, buildings, lodging, sports, and medical facilities, while selling and renting construction machinery and materials.