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Apartment Buying
Carpet Area vs. Built-up Area: What Apartment Buyers Must Know
July 20, 2026
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4 min read
Understand the precise technical difference between usable carpet area, wall thickness, balcony spaces, and super built-up loading percentages.
Under RERA guidelines, real estate developers must sell apartments based on usable Carpet Area—the actual usable floor space within internal walls. Built-up area includes wall thickness and balconies, while Super Built-up Area incorporates common areas like corridors, staircases, and elevators. When evaluating floor plans, always compare the carpet area efficiency ratio to get true value for your investment.