Object of sale and purchase agreement is normally land and buildings. As land and buildings are both treated as independent real estates in Japan, ownership of a building can be transferred separately from that of land. Building unit ownership can also be an object of sale and purchase agreement.*Civil Code Article 86 (1): Land and any fixtures thereto are immovables.(2) Things other than immovables are movables.*Act on Building Unit Ownership Article 1: When there are multiple portions into which a single building is structurally divided that are independent residences, stores, offices, warehouses, or any other spaces that can be used as if they were buildings, each of such portions may be made the subject of ownership, pursuant to the provisions of this Act.