The construction area includes the pool, which is your usable area, that is, the net area in the suite plus the area occupied by the upper wall (including the balcony and bay window, not the area) and the pool area. The pool area includes stairs, elevators, hallways, and special greening of residential areas. Whether the parking lot is included depends on the purchase contract. The pool area is obtained by multiplying your apartment by your pool coefficient. The pool coefficient is calculated by the developer according to the pool total area and apartment type.