Two 3 BHK brochures can quote wildly different square-foot numbers for similar room counts. The fix is to compare carpet area vs built-up vs saleable area on the same basis — especially under Gujarat's RERA disclosure rules — before you judge value or negotiate.
This guide explains what each label means, how balconies and walls are treated, how to calculate layout efficiency, and what to verify in your agreement annexure. Pair it with the 3 BHK floor plan guide, site-visit checklist and GujRERA verification before you pay a token.
Carpet area under RERA is the net usable floor space inside your apartment — the number that should appear on your Agreement for Sale. Built-up area adds wall thickness (and sometimes balcony slabs, depending on marketing definitions). Saleable or super built-up area further loads a share of common circulation and amenities, which is why brochure numbers look largest.
When comparing two 3 BHK flats in Gandhinagar, always request the RERA carpet schedule for each unit, calculate efficiency (carpet ÷ saleable), and verify room dimensions on site. Do not rank projects on headline saleable area alone.
Indian brochures still mix legacy labels with RERA-mandated carpet disclosure. Treat them as three layers — smallest to largest — not interchangeable synonyms.
Carpet area (RERA)
Net usable floor area within the apartment, measured per the Real Estate (Regulation and Development) Act, 2016. This is what you furnish and live in. Promoters must disclose it on GujRERA and in your agreement.
Built-up area
Carpet plus external wall thickness and, in some marketing packs, balcony slab or utility shells. Useful for structural context but not the RERA pricing benchmark unless your quotation explicitly prices on built-up.
Saleable / super built-up
Built-up plus a proportionate share of lifts, lobbies, corridors, club, ducts and other common loads. Headline brochure numbers usually sit here — which is why two similar 3 BHK plans can quote different saleable figures.
After RERA, carpet area became the regulated disclosure standard for residential sales. In practice, buyers should confirm three things on the registered record: the carpet number for your exact unit, the room-wise break-up on the agreement annexure, and whether any utility or balcony area is listed separately.
This is educational guidance, not legal advice. Your Agreement for Sale and registered project documents govern if there is any conflict with marketing material.
Gandhinagar 3 BHK buyers often fall in love with a wide balcony — then discover it was never part of the carpet number they used for mental maths. That is normal under RERA, but you must budget and compare correctly.
Balconies
Open balconies are valuable for daylight and ventilation but are usually disclosed as separate schedule area. When a promoter quotes "278 sq. yd. unit," that planning label may include balcony proportion differently from RERA carpet. Measure on site and match the agreement.
Walls
Internal walls between rooms generally sit inside the RERA carpet definition. External wall thickness moves you from carpet toward built-up. Thick façade systems or wide ducts can reduce usable efficiency even when saleable looks generous.
Utility and dry balconies
Kitchen utility, dry balcony and service niches vary by tower. Confirm whether each space is inside carpet, listed separately, or shown only on the marketing layout — then walk the sample flat with a tape measure.
Efficiency tells you how much of the loaded area you can actually furnish. It is the fastest way to compare two 3 BHK quotations without being fooled by marketing super built-up.
(RERA carpet area ÷ saleable area) × 100
Example workflow (use your own numbers from approved documents — do not copy brochure samples):
For rupee comparisons, also calculate price per RERA carpet sq. ft. using the all-in quotation from our total cost guide — not base price alone.
Why this exists: Brochures often quote saleable or super built-up area while your agreement prices on RERA carpet. Without the same basis, two 3 BHK quotes cannot be compared fairly. This worksheet forces both projects onto carpet area, efficiency and all-in rate — then records layout and verification checks before you pay a token.
Name both projects and enter unit ID + GujRERA number from the official record.
Enter carpet and saleable from the agreement annexure — efficiency % calculates automatically.
Add all-in quotation (taxes + parking) — see ₹ per carpet sq. ft. side by side.
Complete site-visit rows and mark shortlist / watch / drop before booking.
Fill only from approved quotations, GujRERA schedules and on-site measurements — not portal estimates. Your progress saves in this browser until you reset.
Project A
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Project B
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Enter carpet, saleable and all-in price for both projects to see a side-by-side efficiency and rate comparison.
| Check | ||
|---|---|---|
| Unit identity | ||
| Unit ID (tower / floor / facing) | ||
| GujRERA registration no. | ||
| Area numbers (from agreement / GujRERA) | ||
| RERA carpet area (sq. ft.) | ||
| Saleable / super built-up (sq. ft.) | ||
| Balcony schedule (sq. ft.) | ||
| Efficiency % auto | ||
| Price (all-in from approved quotation) | ||
| All-in quotation (₹) | ||
| Price per carpet sq. ft. (₹) auto | ||
| Price basis on quotation | ||
| Layout checks (from site visit) | ||
| Living + dining width (measured) | ||
| Master bedroom (measured) | ||
| Cross-ventilation | ||
| Bedroom privacy from passage | ||
| Balcony usable depth | ||
| Verification | ||
| Sample flat matches your unit plan? | ||
| GujRERA record verified today? | ||
| Agreement carpet matches brochure? | ||
| Your shortlist verdict | ||
Marketing layouts are directional. The Agreement for Sale annexure is binding. Before any token payment, reconcile:
Under-construction buyers should pair this with the RERA booking due-diligence guide. Ready inventory buyers should still verify occupancy-related documents separately.
Compare layout in context
How to read Ariva's 278 sq. yd. 3 BHK layout
Ariva at Palm Road, Sargasan describes its homes as approximately 278 sq. yd. layouts — a buyer-planning dimension for the 3 BHK unit size, with a 33.25 ft drawing-dining width, dedicated pooja and store room, and a 21 × 7 ft balcony among the published layout features.
Important: 278 sq. yd. is not a substitute for the RERA carpet area on your agreement. Do not derive per-unit carpet from aggregate project totals. Request the registered carpet schedule and approved layout for your shortlisted tower and floor from the sales team.
GujRERA registration: PR/GJ/GANDHINAGAR/GANDHINAGAR/Gandhinagar Municipal Corporation/MAA17033/290626/300632.
Use the worksheet above to compare carpet, saleable area and layout efficiency at any Shree Buildcon project below. Request the registered carpet schedule and approved layout for your shortlisted unit before you pay a token.
Ariva GujRERA: PR/GJ/GANDHINAGAR/GANDHINAGAR/Gandhinagar Municipal Corporation/MAA17033/290626/300632. Verify the latest official record for each project independently before making a booking decision.
View Ariva layout · Request carpet schedule · View all projects
Generally no. Under the Real Estate (Regulation and Development) Act, 2016, carpet area refers to the net usable floor area within the apartment. Open balconies and terraces are usually disclosed separately in the agreement schedule and are not counted as carpet area unless a specific approved definition in your project documents states otherwise.
RERA carpet area typically includes the area covered by internal partition walls within the apartment, measured to the internal finished surface. External wall thickness and common-area shares are not part of carpet area. Always match the definition on your Agreement for Sale annexure.
Saleable or super built-up figures load different shares of common circulation, amenities, ducts and marketing conventions. Two towers with similar room counts can differ in corridor width, lift lobby size, balcony depth and loading factor. Compare carpet area and layout efficiency instead of headline saleable alone.
Ariva markets approximately 278 sq. yd. as the unit or layout size — a buyer-facing planning dimension for the 3 BHK home. It is not a substitute for the RERA carpet area on your agreement. Request the registered carpet schedule and approved layout for the exact unit you plan to buy.
Built-up area usually means carpet area plus the thickness of external walls and sometimes balcony slabs or other structural elements, depending on how the promoter defines it in marketing material. It is not the same as RERA carpet area unless explicitly stated.
Saleable area (often called super built-up in brochures) adds a proportionate share of common areas — lifts, lobbies, corridors, club, ducts — to the built-up or carpet base. This is why saleable numbers look larger than carpet and vary between projects.
Divide RERA carpet area by saleable area (or the promoter's loaded area definition) and express as a percentage. Higher efficiency means more usable space per rupee of loaded area. Use the same denominator for both projects you compare.
Match unit number, tower, floor, RERA carpet area, balcony or terrace schedule, parking allotment, and room dimensions against the approved layout and GujRERA filing. Any verbal promise about size should appear in the registered agreement schedule before you pay a token.
