Sanei Architecture Planning Co.,Ltd. is engaged in the property market, conducting business both within Japan and across international borders. The company's primary endeavors include conceiving, constructing, and marketing various residential units such as detached homes, flats, and multi-unit dwellings. Additionally, Sanei operates as a main contractor and accepts commissions for bespoke residential construction projects. Their offerings further extend to supplying real estate for investment purposes, creating and selling rental properties, procuring and leasing out both private residences and commercial office spaces, and providing office interior design services. The firm was founded in 1993 and its principal administrative office is located in Tokyo, Japan.