Verify RERA Carpet Area: A Buyer's Guide

The draft agreement just arrived, and the number looks off

You shortlisted a 2BHK in an under-construction project, agreed on a price with the sales team, paid your booking amount, and now the draft sale agreement has landed in your inbox — probably as a dense PDF you're expected to read, understand, and sign within a few days. Somewhere in the clauses is a carpet area figure. It's close to what the sales team quoted verbally, but not identical. Is that normal? Is it a mistake? Is it something to push back on?

Here's the good news: you don't have to just trust the agreement, the sales brochure, or a phone call with the relationship manager. Every RERA-registered project in India has a public page on its state's RERA portal, and that page states the carpet area the developer has legally declared for the project's units. It's a free, public, independently checkable source — and cross-referencing it against your agreement takes about fifteen minutes once you know where to look. This guide walks through exactly how, whether you're checking from your own city or, just as often happens, from abroad as an NRI buyer relying on a PDF emailed to you.

What "carpet area" legally means under RERA — and why pricing runs on it

The Real Estate (Regulation and Development) Act, 2016 gave India its first statutory definition of carpet area: the net usable floor area of an apartment, excluding the area covered by external walls, areas under service shafts, exclusive balcony or verandah area, and exclusive open terrace area, but including the area covered by internal partition walls. Before this Act, developers had wide latitude to market and price flats on "super built-up area" — a figure that could quietly include a share of lobbies, staircases, and common amenities, making genuine cross-project price comparison difficult for buyers.

RERA's intent was straightforward: give buyers one standard, legally defined number to compare and price against, and require it to be stated in every registered project's disclosures and every buyer's sale agreement. That's why the RERA-declared carpet area is the figure that matters most when you're checking whether what you agreed to pay for matches what's legally on record — not the brochure's larger headline number.

Step by step: finding your project's declared carpet area on the state RERA portal

Identify the state RERA authority for the project's location. RERA is state-administered, so each state runs its own portal and registration system — for example MahaRERA (Maharashtra), K-RERA (Karnataka), TG-RERA (Telangana), UP-RERA (Uttar Pradesh), and Haryana RERA, among others.
Locate the project's RERA registration number. This should appear on the builder's marketing material, the booking form, and the sale agreement itself — typically a specific alphanumeric format (for example, MahaRERA numbers commonly begin with the letter "P" followed by a registration code). If you can't find it, ask the sales team directly; a RERA-registered project is legally required to display this number.
Search the state portal by registration number or project name. Most portals offer both search options; searching by registration number is faster and avoids ambiguity when multiple projects share similar names.
Open the project's public disclosure page. This typically lists promoter details, approvals, the sanctioned layout, the declared unit types, and the carpet area for each unit type or specific unit, depending on how granular the state portal's disclosure format is.
Note the declared carpet area for your specific unit type/configuration, and record the date you viewed the page — RERA listings can be updated, and you want a timestamped reference for your own records.
Open your draft sale agreement's carpet-area clause and compare the figure, side by side, against what the RERA portal states for the same unit type.
If the figures don't match, don't assume it's a red flag — treat it as a specific, factual question to raise with the developer in writing, referencing both the RERA portal figure (with the date you viewed it) and the agreement clause.

Carpet vs built-up vs super built-up: a quick reference while you check

Term	What it includes	Where it typically appears	Relevance to your check
Carpet area	Net usable floor area inside the flat's own walls	RERA listing, sale agreement	The legally mandated pricing basis — this is what you're verifying
Built-up area	Carpet area + the unit's own wall thickness (and sometimes exclusive balcony)	Municipal/tax records, some valuation reports	Useful context; not the RERA pricing figure
Super built-up area	Built-up area + a proportionate share of common areas (lobbies, lifts, stairs)	Marketing brochures, initial booking form	Typically the largest, most "marketed" figure — not what price-per-sq-ft should be based on under RERA

Typical loading (the gap between carpet and super built-up) varies meaningfully project to project depending on amenities and design — treat any specific percentage a salesperson quotes you as an illustrative example for that project, not a universal industry constant.

Geographic and demographic notes: registration formats and remote checking

Because RERA is implemented state by state, the exact look of a registration number, the layout of the disclosure page, and the granularity of unit-level data can differ meaningfully between, say, MahaRERA and TG-RERA. A useful habit for any buyer: before assuming a number "looks wrong" simply because it doesn't resemble a format you've seen for another state, confirm you're on the correct state's portal for where the project is actually located.

This matters in particular for NRI and diaspora buyers, who very often cannot visit the project site or the sales office in person before booking. The RERA portal check is one of the very few pieces of project-level due diligence that can be done entirely remotely and independently — pull the registration number from the PDF agreement emailed to you, search the relevant state portal from wherever you are, and compare the declared carpet area against the emailed document, without needing anyone local to physically visit an office on your behalf.

Reading the rest of the RERA project page while you're there

Since you're already on the page checking carpet area, it's worth noting a few adjacent fields, always with the date you viewed them:

Promoter (developer) details — the registered legal entity name, which should match the entity named in your sale agreement.
Approvals listed — the specific sanctions and approvals the portal shows as obtained, as of the date you're viewing.
Proposed/revised completion date — RERA requires promoters to disclose and update the project's completion timeline; note whether it has been revised from what you were originally told.
Registration validity — RERA registrations have a validity period tied to the project's completion timeline; confirm the registration is current.

None of this is a substitute for a full legal or technical due-diligence review before signing — it's simply what an informed buyer can gather independently, as public facts, in the time it takes to read one webpage carefully.

Mini scenario: catching — and resolving — a discrepancy

Anitha, an NRI based in Dubai, has booked a 3BHK in a project in Bengaluru and receives the draft agreement over email. The agreement states a carpet area of 1,120 sq ft. She recalls the sales brochure quoting "1,540 sq ft" — but she also remembers being told, correctly, that this was the super built-up figure, so the gap alone doesn't concern her.

To be sure, she pulls up K-RERA's public portal, searches the project's registration number (found printed at the bottom of the agreement's first page), and opens the unit-type disclosure for her configuration. The portal states a declared carpet area of 1,095 sq ft for that unit type — 25 sq ft less than what her agreement states.

Anitha's next step isn't panic, and it isn't silence — it's a written email to the developer's sales/legal contact, referencing both figures with the exact date she checked the RERA portal, and asking for clarification before she proceeds to sign. This is precisely the kind of specific, evidence-backed question that gets a faster and more serious response than a general "I'm worried about the area," because it points to an exact, checkable discrepancy between two official sources.

Pro tips for verifying carpet area yourself

Always search by RERA registration number, not just project name, to avoid confusing similarly named projects across developers or phases.
Screenshot or save a PDF of the RERA disclosure page, with the date visible, so you have your own dated record independent of the portal's future updates.
Match the exact unit type/configuration, not just "a 3BHK in this project" — carpet area can vary between different 3BHK layouts within the same project.
Keep the brochure, booking form, and RERA screenshot together with the draft agreement so any comparison is a five-minute exercise, not a scramble before a signing deadline.
Re-check the RERA listing again close to your final signing date, especially for projects with a long booking-to-agreement gap, since portal disclosures are meant to be kept current by the promoter.

Common mistakes to avoid

Trusting the brochure's headline number as the figure the price is based on — under RERA, pricing should run on carpet area, not super built-up area.
Not writing down the RERA registration number early, then struggling to locate it later when you actually want to check the portal.
Assuming any mismatch is fraud rather than first checking for a simple unit-type mix-up or an outdated saved figure.
Skipping the re-check before final signing, especially when months have passed since booking and the project may have gone through configuration or plan revisions.
Relying solely on a relationship manager's verbal confirmation instead of independently pulling the portal page yourself.

Why an organised buyer-side habit pays off

None of this requires legal training — it requires a habit: pull the primary source, note the date, compare it to what you were told, and ask specific questions when the numbers don't line up. Buyers who build this habit early tend to catch small discrepancies while they're still cheap and easy to resolve — a clarifying email before signing — rather than after possession, when the same 25 sq ft gap becomes a much harder and more expensive conversation.

Where DrawMagic fits — organising your checks, not replacing your professional advisors

DrawMagic is an information and software platform. It does not verify a developer's RERA filings on your behalf, audit carpet-area declarations, or act as your legal or financial advisor — that responsibility sits with your own diligence and, where a transaction is actually proceeding, a licensed professional's review. What DrawMagic can do is give you a structured place to log what you found: the RERA portal figure, the agreement figure, the date you checked each, and any developer correspondence that followed.

The evolving Buyer Intelligence workspace is being built specifically to hold this kind of official-records checklist alongside your affordability and locality research, so area verification becomes a routine part of your buying process rather than a one-time scramble before signing. If you'd like a low-pressure way to translate a super-built-up quote back into a comparable carpet figure while you're still shortlisting, try the carpet area calculator. And for how DrawMagic frames facts-with-sources rather than scores or guarantees, see its Responsible AI commitments. Any documents or figures you choose to save follow a consent-first approach, consistent with the direction of India's evolving privacy framework (Deloitte India, "India's DPDP Rules 2025," 2025).

Key Takeaways

RERA (2016) legally defines carpet area as the net usable floor area within a flat's own walls, and requires RERA-registered projects to price on a carpet-area basis.
Every RERA-registered project has a public disclosure page on its state's RERA portal (e.g., MahaRERA, K-RERA, TG-RERA, UP-RERA, Haryana RERA) stating the declared carpet area — this is a free, independently checkable primary source.
Find the project's RERA registration number on the agreement or booking form, then search the correct state's portal by that number — not just the project name — to avoid ambiguity.
Always match the exact unit type/configuration before comparing figures; carpet area can differ between layouts within the same project.
Compare the RERA-declared figure against your draft agreement's carpet-area clause before signing, and note the date you checked the portal.
This check is one of the few due-diligence steps a remote or NRI buyer can complete entirely independently, without a site visit.
Small discrepancies are best raised as specific, written, dated questions to the developer — not assumed to be fraud, and not ignored either.
Re-check the RERA listing close to your actual signing date, especially if significant time has passed since booking.
DrawMagic organises the facts and dates you gather during this process — it does not verify a developer's filings or replace a licensed professional's review.

FAQ

Q: What if I can't find the project's RERA registration number? A RERA-registered project is legally required to disclose its registration number in advertisements and buyer communication. If you can't locate it, ask the developer's sales team directly, or search the state RERA portal by project name and location as a fallback.

Q: Is a small carpet-area difference between the agreement and the RERA portal always a serious problem? Not necessarily — it could reflect a unit-type mix-up on your end, an outdated screenshot, or a genuine, documentable revision. Treat it as a specific factual question to raise with the developer in writing, and involve a licensed professional if the discrepancy is significant or unresolved.

Q: Can I check a project's RERA status before I even book, not just after? Yes — and it's strongly recommended. Pulling the RERA disclosure page during your shortlisting stage, before booking, lets you compare carpet area and loading factor across multiple projects on a like-for-like basis.

Ready to build this habit into your own home search? Start organising your buyer profile in the Buyer Intelligence workspace, check any shortlisted unit's numbers with the free carpet area calculator, and explore how DrawMagic supports buyers end to end at drawmagic.com/buyers.

How to Verify the Carpet Area a Project Declares Under RERA