Area & Measurement
How to Measure Carpet Area Yourself
The carpet area in your agreement is a legally binding promise. If they deliver less, you are entitled to money back. So it is worth checking — and almost nobody does.
The short answer
If the carpet area delivered is LESS than what your agreement says, RERA entitles you to a refund of the excess you paid — WITH INTEREST.
So the question is simple: did you actually get what you paid for?
A laser measure costs about ₹1,500. The check takes an afternoon. Almost nobody does it.
Why bother
The carpet area is stated in your agreement for sale. It is a legally binding term, and RERA requires it to be disclosed.
If the promoter delivers LESS carpet area than promised, they must refund the excess amount you paid — with interest.
On a 1,000 sq ft flat at ₹12,000 per carpet sq ft, a 3% shortfall — 30 sq ft, which you would never notice by eye — is ₹3,60,000. Plus interest.
Three per cent. Which is not a large error. And it is worth ₹3.6 lakh.
What counts as carpet area — RERA Section 2(k)
| INCLUDE | EXCLUDE |
|---|---|
| The net usable floor area within the apartment | External walls |
| Internal partition walls of the apartment | Service shafts |
| Bedrooms, living, kitchen, bathrooms, internal passages | Exclusive balcony / verandah |
| Exclusive open terrace |
Note the two that catch people: INTERNAL partition walls are INCLUDED in RERA carpet area (this surprises everyone). And the BALCONY is EXCLUDED — so don't measure it into your total, or you'll conclude you got more than you did.
How to measure
- Buy a laser distance measure. About ₹1,500. Accurate to a couple of millimetres. Far better than a tape for this.
- Take the floor plan and the agreement. You need the promised figure to compare against.
- Measure each room — length × width, wall to wall, at floor level.
- Measure irregular rooms in rectangles and add them together.
- Measure the internal partition walls — their footprint is included in RERA carpet area. Length × thickness.
- Do NOT measure the balcony into the carpet total. Measure it separately.
- Do NOT include the external walls.
- Add it all up. Compare with the agreement.
- Photograph every measurement — the laser reading against the wall. You may need the evidence.
A licensed surveyor or an architect will measure the flat properly and give you a signed report.
It costs a few thousand rupees. On a purchase of a crore, that is a rounding error — and a signed professional report is far stronger evidence in a RERA complaint than your own laser readings and photographs.
If you find a shortfall of more than 2%, get it professionally measured before you file anything.
If it IS short — what to do
- Measure again. Carefully. Make sure you have the RERA definition right — internal walls in, balcony out.
- Get a professional measurement if the gap is meaningful.
- Write to the builder, formally, by registered post. State the promised area, the measured area, and the shortfall. Ask for a refund with interest. Keep the receipt.
- Talk to the other allottees. If your flat is short, theirs probably is too — the same error usually runs through a whole tier or a whole tower. A group complaint is far more effective.
- File a RERA complaint. You do not need a lawyer.
- Ask for a refund of the excess paid, with interest. Be specific about the amount.
Ask for a site visit at the pre-possession inspection. Take the laser.
Because once you have taken possession and signed the handover, your leverage drops sharply. You can still complain — the right does not vanish — but you have accepted the flat, and you will be arguing from a weaker position.
Before possession, you have the one thing the builder actually cares about: you have not yet signed.
Practical tips
- Measure at floor level, not at waist height. Skirting and plaster vary.
- Measure twice. Everything.
- Take a friend. One holds, one records.
- Photograph the laser display against each wall, with the room visible.
- Do it in daylight. Lasers struggle in bright sun but you need to see what you are doing.
- Write everything down as you go. You will not remember which reading was which.
- Tolerance: a 1% variation may be construction tolerance. 3% or more is a real shortfall, and on a crore flat it is lakhs.
Frequently asked questions
What if the carpet area is less than promised?
RERA entitles you to a refund of the excess amount you paid, with interest. The carpet area in your agreement for sale is a legally binding term. On a 1,000 sq ft flat at Rs 12,000 per carpet sq ft, a 3% shortfall — 30 sq ft, which you would never notice by eye — is Rs 3.6 lakh plus interest.
How do I measure carpet area myself?
Buy a laser distance measure (about Rs 1,500). Measure each room wall to wall at floor level, breaking irregular rooms into rectangles. Include the footprint of the INTERNAL partition walls — RERA counts them. Exclude the external walls, the service shafts and the balcony. Add it up and compare with your agreement. Photograph every reading.
Are internal walls included in RERA carpet area?
Yes, and this surprises everyone. Section 2(k) includes the area covered by the internal partition walls of the apartment, while excluding the external walls, service shafts, the balcony and the open terrace. So measure the internal walls in — length times thickness.
When should I measure the carpet area?
Before you take possession, if you possibly can — ask for a pre-possession inspection and take the laser. Once you have taken possession and signed the handover, your leverage drops sharply. You can still complain, but you will be arguing from a weaker position. Before possession, you have the one thing the builder cares about: you have not yet signed.
What shortfall is worth complaining about?
A 1% variation may be construction tolerance. 3% or more is a real shortfall — and on a crore flat that is lakhs. Get it professionally measured if the gap is meaningful, and talk to the other allottees: if your flat is short, theirs probably is too, because the same error usually runs through a whole tier or tower. A group complaint is far more effective.