Shinnihon Corp. provides civil engineering and construction services. Its operations are carried out through the Construction and Development business segments. The Construction segment provides planning, design, and construction of cohousing, government offices, hotels, office buildings, shopping centers, stores, factories, hospitals and welfare facilities. The Development segment provides development, lease, and sale of mansion houses, single-family houses, commercial facilities, real estate properties, planning and development of projects such as warehousing. The company was founded by Shuzo Kanetsuna in April 1923 and is headquartered in Chiba, Japan.