The Cheaper Flat That Costs More: Comparing Bengaluru Quotes on RERA Carpet Area
Section 2(k) of the RERA Act gives one legal definition of carpet area, which makes it the fair basis for comparing flats across projects. This guide shows Bengaluru buyers how to convert quotes to a price per square foot of carpet area, how loading varies, how to treat balconies and terraces, and what to check in the agreement.
Two Bengaluru projects, two brochures, one weekend. Project A offers a three-bedroom flat at Rs 1.2 crore for 1,500 square feet. Project B offers one at Rs 1.15 crore for 1,480 square feet. On the face of it, B is cheaper per square foot and almost as large. Then the buyer asks each sales office one more question, the carpet area, and the answers are 1,100 square feet for A and 1,000 for B. The cheaper flat turns out to cost more for every square foot a family can actually use.
The Real Estate (Regulation and Development) Act, 2016 gives buyers the tool to make that comparison properly: a single legal definition of carpet area. This guide explains the definition, shows how to convert any quote to a price per square foot of carpet area, and lists the questions that keep a comparison honest.
The short answer. Section 2(k) of the RERA Act defines carpet area as the net usable floor area of an apartment, excluding the area covered by the external walls, areas under service shafts, exclusive balcony or verandah area and exclusive open terrace area, but including the area covered by the internal partition walls. Divide the total price by the carpet area to get the number that compares like with like. In the example above, A works out to about Rs 10,909 per square foot of carpet area and B to Rs 11,500. The trade-off: carpet area is the fairest common yardstick, but it leaves out balconies and terraces that some buyers value, so compare those separately rather than ignore them.
What exactly is carpet area under RERA?
A defined measure, the same in every project. In the text of the Act hosted by the Telangana regulator, Section 2(k) says carpet area means the net usable floor area of an apartment, excluding the area covered by the external walls, areas under services shafts, exclusive balcony or verandah area and exclusive open terrace area, but includes the area covered by the internal partition walls of the apartment.
The explanation defines the two exclusions buyers most often ask about. Exclusive balcony or verandah area means the area of the balcony or verandah appurtenant to the net usable floor area of an apartment, meant for the exclusive use of the allottee. Exclusive open terrace area means the area of open terrace appurtenant to the net usable floor area, meant for the exclusive use of the allottee.
So the internal walls between your rooms count; the external walls, shafts, your balcony and your private terrace do not. Super built-up area, by contrast, is a term used in sales material; the Act does not define it, which is why two projects' super built-up figures cannot be assumed to mean the same thing.
How do you convert a quote to a carpet-area price?
Divide the all-in price by the carpet area. Use the same total in both cases, including the charges you must pay to the builder, so that one project's lower base price does not hide higher add-ons. Then compare the results, flat by flat and project by project.
| Measure | Project A | Project B |
|---|---|---|
| Quoted price | Rs 1.2 crore | Rs 1.15 crore |
| Super built-up area quoted | 1,500 sq ft | 1,480 sq ft |
| Carpet area under Section 2(k) | 1,100 sq ft | 1,000 sq ft |
| Price per sq ft of super built-up area | About Rs 8,000 | About Rs 7,770 |
| Price per sq ft of carpet area | About Rs 10,909 | Rs 11,500 |
Before dividing, make sure both totals are built the same way. If one cost sheet includes car parking, clubhouse and other builder charges and the other lists them separately, add them back so the two numbers cover the same things. Amounts paid to the government rather than the builder can be left out of this comparison, as long as you leave them out for both.
The figures are illustrative. The point is the reversal: on the super built-up measure B looks about Rs 230 cheaper per square foot, but on carpet area it is about Rs 591 dearer. Put another way, at A's carpet rate of about Rs 10,909, B's 1,000 square feet would cost about Rs 1.09 crore, not Rs 1.15 crore.
What is loading, and why does it vary so much?
Loading is the gap between the super built-up figure and the carpet area, expressed as a percentage of carpet area. In the example, A's 1,500 square feet over 1,100 of carpet is a loading of about 36 per cent; B's 1,480 over 1,000 is about 48 per cent. Projects differ in how much common space they include and in how they calculate the super built-up number.
Because the Act defines carpet area but not super built-up area, the safest course is to treat loading as information, not as a price. Ask each project to state the carpet area of the specific unit, and use that for the price comparison. Our earlier explainer on carpet area versus super built-up area covers the terms in more depth.
Where should the carpet area appear in your paperwork?
In the agreement, and then at handover. Section 13(2) says the agreement for sale shall be in such form as may be prescribed and shall specify the particulars of development, including specifications, and other prescribed particulars. Check that your draft states the unit's carpet area, since that is the figure you will measure against when the flat is handed over.
The Act also protects the agreed layout. Section 14(2)(i) says that once the sanctioned plans, layout plans and specifications are disclosed to you, the promoter shall not make additions or alterations to your unit's plans and specifications without your previous consent, and its explanation says minor changes exclude an addition to the area. Section 11(3)(a) says the sanctioned plans and layout plans with specifications shall be made available at booking, which is the document to compare the carpet figure against.
PropNewz project pages can help you start the comparison with registration numbers; the page for Saiven Six Senses in Kasavanahalli, for example, lists K-RERA number PRM/KA/RERA/1251/446/PR/290525/007795, which you can use to look up the project's filed details.
How should balconies and terraces be treated?
Separately, not ignored. Section 2(k) excludes exclusive balcony or verandah area and exclusive open terrace area from carpet area. That keeps the core comparison clean, but a large private terrace has real value to many families.
A practical approach is to compare projects first on price per square foot of carpet area, and then list each unit's exclusive balcony and terrace areas alongside. If one project's carpet price is a little higher but it comes with a generous private terrace, that is a trade-off you can now see clearly instead of having it buried in a single super built-up number.
How do you check the carpet area at handover?
Measure the way the definition reads. Section 2(k) counts the net usable floor area inside the external walls, includes the area under internal partition walls, and leaves out service shafts, the exclusive balcony or verandah and any exclusive open terrace. A tape measure and the sanctioned floor plan are enough for a rough check; for a more exact figure, some buyers bring in an architect or surveyor.
Compare the result with the carpet area stated in your agreement for sale. Small differences can come from measurement method, so note the gap rather than react to it at once. If the shortfall is material, raise it in writing with the builder, quoting the agreed figure.
If the dispute is not resolved, Section 31(1) lets any aggrieved person file a complaint with the Authority or the adjudicating officer for a violation of the Act, rules or regulations, and Section 71(1) lists Section 14 among the provisions under which an adjudicating officer decides compensation. Our earlier guide on measuring carpet area at handover goes step by step through the process.
What should be on your comparison checklist?
- Ask every project for the unit's carpet area as defined in Section 2(k), in writing.
- Get the all-in price, including charges payable to the builder, from each cost sheet.
- Divide the all-in price by the carpet area to get a comparable price per square foot.
- Note the exclusive balcony, verandah and open terrace areas separately for each unit.
- Work out each project's loading, but use it as information, not as the basis for price.
- Check that the draft agreement states the carpet area of your specific unit.
- Keep the sanctioned plan given at booking to compare against the flat at handover.
For the charges side of the all-in price, see our guide to reading a builder's cost sheet.
Frequently asked questions
What is carpet area under the RERA Act?
Section 2(k) of the RERA Act defines carpet area as the net usable floor area of an apartment, excluding the area covered by external walls, service shafts, exclusive balcony or verandah area and exclusive open terrace area, but including the area covered by the internal partition walls of the apartment.
How do I compare flat prices fairly across projects?
Divide each flat's all-in price by its carpet area as defined in Section 2(k) of the RERA Act. In an illustrative example, a Rs 1.2 crore flat with 1,100 square feet of carpet area costs about Rs 10,909 per square foot, against Rs 11,500 for a Rs 1.15 crore flat with 1,000.
Are balconies included in RERA carpet area?
No. Section 2(k) excludes the exclusive balcony or verandah area and the exclusive open terrace area from carpet area. Its explanation defines these as balcony, verandah or open terrace area appurtenant to the net usable floor area and meant for the exclusive use of the allottee.
Can the builder change my flat's area after booking?
Section 14(2)(i) says that once plans and specifications are disclosed, the promoter shall not make additions or alterations to the buyer's unit without that buyer's previous consent. Its explanation says minor changes exclude structural change, including an addition to the area or change in height.
The cheapest-looking quote is not always the cheapest flat. Put every option on the same carpet-area footing before you decide. This is general buyer information, not investment advice.
Last updated 2026-10-27. PropNewz Team.
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