TAISEI Corp. engages in the construction and engineering business. It operates through the following segments: Civil Engineering, Architecture and Development Business. The Civil Engineering Business segment related to all construction work for civil engineering structures. The Architecture Business segment related to all construction work for buildings. The Development Business segment related to all real estate, including buying, selling, leasing, management and brokerage of real estate. The company was founded by Kihachiro Okura in October 1873 and is headquartered in Tokyo, Japan.