Sanei Architecture Planning Co.,Ltd. engages in the real estate business in Japan and internationally. It designs, builds, and sells single-family houses, apartments, and condominiums. The company also engages in the custom-built housing and detached house sales business. In addition, it provides real estate investment properties; develops and sells rental properties; and develops and rents properties. The company was incorporated in 1993 and is headquartered in Tokyo, Japan.