Abstract: A retrievable combinational house comprising a main body to store following items, at least one motor to expand and retrieve the combination, at least one floor part, at least one wall part and at least one roof part; when the combination expands, the motor expands the roof part, the wall part and the floor part in series to double the area, while retrieval, the motor retrieves the floor parts, the wall parts and the roof parts in reverse order into the main body.