RERA Carpet Area: What It Means and How It Is Calculated
Before RERA, builders sold flats on the super built-up area, a padded number that made homes look bigger and cheaper per square foot than they were. RERA changed that by making one figure the standard: RERA carpet area. This guide explains what it means, how it is calculated, and why it protects you.
Quick answer
- RERA carpet area is the actual usable area inside your flat.
- It excludes external walls, the balcony, the terrace and common areas.
- It includes the space under internal partition walls.
- RERA requires builders to price and sell on carpet area, not super built-up.
What is RERA carpet area
RERA carpet area is the net usable floor area of your apartment, the space you can actually lay a carpet on. Under the RERA Act 2016, it is the usable area inside the flat, such as the bedrooms, kitchen, bathrooms and living room, plus the area covered by the internal partition walls. It leaves out the external walls, the balcony, the veranda and any common area.
How it is calculated
The RERA definition is:
RERA carpet area = net usable floor area (excluding external walls, balcony, veranda and terrace) + area of internal partition walls.
This is slightly different from the old carpet area, which did not count the internal walls. So RERA carpet area is usually about 5 percent larger than the traditional carpet area, but far smaller than the super built-up figure.
Carpet vs built-up vs super built-up
| Term | What it includes | Rough size |
|---|---|---|
| RERA carpet area | Usable inside area + internal walls | Base figure |
| Built-up area | Carpet + external and internal walls + balcony | 10 to 20% more than carpet |
| Super built-up area | Built-up + share of lobby, lift, stairs, amenities | 25 to 40% more than carpet |
As a rule of thumb, carpet area is about 70 percent of the built-up area. The super built-up area, the old selling figure, could be 30 to 40 percent larger than what you actually use. That gap is exactly what RERA carpet area removes. For more, see our carpet vs built-up vs super area and loading in real estate guides.
Why it protects you
- You pay for space you can use, not for shared corridors and lifts hidden in the price.
- Price per square foot becomes honest and comparable across projects.
- Builders must state the carpet area in the agreement, so there are fewer surprises at possession.
- If the delivered carpet area is less than promised, you have a claim under RERA.
What to check when buying
- Ask for the RERA carpet area in writing, not the super built-up figure.
- Work out the real price per square foot on the carpet area to compare projects.
- Check the loading, the gap between super built-up and carpet, is not unusually high.
- Confirm the carpet area is listed on the RERA website for the project.
Charges like PLC are often still applied on the larger saleable area, so always separate the carpet area from the pricing base when you compare.
FAQ
What is RERA carpet area?
It is the actual usable area inside a flat, excluding external walls, balcony and common areas, plus the internal partition walls.
How is RERA carpet area calculated?
Net usable floor area, excluding external walls, balcony, veranda and terrace, plus the area of the internal partition walls.
Is RERA carpet area the same as carpet area?
Almost. RERA carpet area adds the internal partition walls, so it is about 5 percent larger than the traditional carpet area.
How does carpet area compare to built-up area?
Carpet area is roughly 70 percent of the built-up area. Built-up adds the walls and balcony.
What is the difference from super built-up area?
Super built-up adds a share of the lobby, lift, stairs and amenities, so it can be 30 to 40 percent larger than carpet area.
Why did RERA make carpet area the standard?
To stop builders selling on padded super built-up figures and to make pricing honest and comparable.
Does the builder have to tell me the carpet area?
Yes. Under RERA the builder must state the carpet area in the agreement and on the RERA website.
What is loading?
Loading is the gap between the super built-up area and the carpet area, added for shared spaces. A high loading means less usable space for the price.
Should I compare flats on carpet area?
Yes. Always compare the price per square foot on carpet area, since that is what you actually use.
What if my flat has less carpet area than promised?
You can raise a complaint under RERA, since the builder is bound by the carpet area stated in the agreement.
Is balcony area part of RERA carpet area?
No. The balcony, veranda and terrace are excluded from the RERA carpet area, though builders may list them separately.
Where can I check a project's carpet area?
On the state RERA website under the project's registration, and in your builder-buyer agreement.
Does RERA carpet area apply to old flats?
RERA applies to projects registered after 2017. Older flats were often sold on super built-up area, so check the documents carefully.
RERA carpet area is the real, usable measure of your home, the space you can actually use. Always ask for it in writing, price on it, and check the loading before you buy.
