Abstract: A unitized module that includes a fully operable self-contained add on room that is adapted to be fitted into the wall of any core structure. The roof, walls and floor of the add on room are confined in a surrounding frame. Motors, including extendable pistons are housed in the frame. The roof, walls and floor are pivotally attached to the frame and pivotally deployed by the motors. The motors are extended between the walls, roof and floor and the frame for pivoting of the walls, roof and floor relative to the frame. The motors are mounted so as to be retracted into the confines of the frame with the add on room collapsed inside the frame.