Carpet Area is the actual usable floor space inside the apartment. Super Built-up Area includes the carpet area plus a proportionate share of common areas like lobbies, lifts, and staircases.

Under the RERA act, Carpet Area is strictly defined as the net usable floor area of an apartment, excluding the area covered by external walls, services shafts, exclusive balcony, and open terrace area, but including the area covered by internal partition walls.

Loading factor is the percentage of space added to the carpet area to arrive at the super built-up area. It typically ranges from 25% to 40% depending on the amenities provided by the builder.