RERA Carpet Area Rules

Two buyers can be told they're purchasing an "1,800 sq ft apartment" and end up with homes that differ by 500 usable square feet, depending entirely on which "area" the number was quoting. Before RERA, that ambiguity was the industry norm. Understanding it is still worth five minutes.

Three Different Numbers, One Confusing Habit

Carpet area is the actual usable floor space inside your apartment; it excludes walls, balconies, and shared spaces. It's the space you can genuinely put furniture on.

Built-up area adds the thickness of your internal and external walls, plus your balcony, to the carpet area.

Super built-up area, sometimes called saleable area, goes further still, adding a proportionate share of everything you use but don't own outright: lobbies, staircases, lifts, corridors, and often the clubhouse and other common amenities.

The gap between carpet area and super built-up area routinely runs 30-40%. A "1,800 sq ft" apartment quoted on super built-up terms might have a carpet area closer to 1,200-1,300 sq ft. Before RERA, developers could quote whichever number made the price per square foot look most attractive, and buyers had no consistent way to compare projects.

What RERA Changed?

RERA mandates that pricing and sale agreements be based on carpet area, not super built-up area. This is one of the Act's more directly consumer-protective provisions: it forces an apples-to-apples comparison across projects, because every developer now has to quote the same kind of number.

What to Actually Check in Your Agreement

Confirm the agreement explicitly states the carpet area in sq. ft. or sq. meters, not just a total price. Confirm the per-square-foot price you've been quoted is calculated on that carpet area figure, not silently derived from a larger number. And ask specifically how balcony or terrace area is being treated, since RERA typically requires it to be listed separately and priced differently from interior carpet area, and this is a detail brochures don't always make obvious.

One More Step Worth Taking

Don't take the brochure's carpet area figure at face value. Ask for a carpet area certificate from a registered architect, particularly on a large-ticket purchase. It's a standard, inexpensive check, and it's the only way to independently confirm that the number in your agreement matches the space you're actually going to own.

FAQ's

What's the difference between carpet area, built-up area, and super built-up area?
Carpet area is the actual usable floor space inside your apartment. Built-up area adds wall thickness and balconies. Super built-up area further adds a share of common spaces like lobbies, lifts, and corridors.

How big can the gap between carpet area and super built-up area actually be?
It typically runs 30-40%. So an "1,800 sq ft" apartment quoted on super built-up terms might have a carpet area of only 1,200-1,300 sq ft.

What did RERA change about how apartments are priced?
RERA requires pricing and sale agreements to be based on carpet area, not super built-up area, making it easier to compare prices across different projects fairly.

What should I check in my sale agreement regarding area?
Confirm the agreement explicitly states carpet area in sq. ft. or sq. meters, and that your quoted price per square foot is calculated on that carpet area, not a larger figure.

How should balcony or terrace area be treated under RERA?
It's typically required to be listed and priced separately from interior carpet area, a detail that isn't always made clear in brochures.