The area of the flat specified by the builder is usually the built-up area which includes the walls inside the flat. Some builders mention the super-built-up area which includes common area such as staircase, lift etc. Carpet area of the flat is the floor space inside the flat. Usually builders don’t mention carpet area in their brochures or plans, but mentions only built up area.
Rarely, some builders mention the super built up area as built up area, which is misleading to the buyers and they end up paying for a larger area than what their house actually is. Although this cannot be categorised as a hidden cost, you must be prepared to pay more for less.
Property buyers should be aware of such traps and should be aware of all the terms before making a final decision. Real estate purchase is one of the most precious achievements of one’s life time. So a careful and slow move is essential before making a decision.