Taisei Corporation is a Japanese corporation founded in 1873. Its main areas of business are building construction, civil engineering, and real estate development. Taisei's headquarters are located at Shinjuku Center Building in Nishi-Shinjuku, Shinjuku, Tokyo.
Taisei has 15 branch offices, 1 technology center, 46 domestic offices, 12 overseas offices, 29 consolidated subsidiaries and 43 affiliated companies accounted for by the equity-method.Wikipedia