Yamadai Corporation engages in the wholesale and retail of housing materials and construction materials in Japan. The company offers wood processing business, which includes computer cutting of wood, processing, preservative processing for large buildings, artificial drying, housing materials, wood processing, drying processing, material making, etc., as well as provides lumber, building materials, housing equipment, plywood, etc. It also engages in planting and cultivation of cedar and cypress; Planning, construction, supervision, and sale and brokerage of residential construction, large wooden construction, wooden houses, and buildings, condominiums, and real estate properties; ground survey business; and real estate rental business. The company was incorporated in 1964 and is headquartered in Ishinomaki, Japan.