Avantia Co.,Ltd. engages in the custom-build housing business in Japan. It involved in the planning, design, construction, interior coordination, and exterior design of houses; detached housing; residential land development and sale; reform and development; residential land development; condominium; and brokerage businesses. The company was formerly known as Sanyo Housing Nagoya Co., Ltd. and changed its name to Avantia Co.,Ltd. in January 2020. Avantia Co.,Ltd. was founded in 1989 and is based in Nagoya, Japan.