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The carpet area is the usable floor space inside your apartment, measured wall to wall. It is the area where you can lay a carpet and place furniture.
Under RERA, carpet area:
- Includes bedrooms, living room, kitchen, bathrooms, passages, and internal partition walls
- Excludes external walls, service shafts, your private balcony or verandah, and your open terrace
It is smaller than the built-up area and the super built-up area. Builders add wall thickness, balconies, and a share of common areas to reach those larger numbers.
Always compare apartments by carpet area. Ask for the figure in writing, and check it against the RERA filing and your agreement.
Introduction
Two apartments can be sold as the same size. One may have far more space to live in.
That happens because builders quote the area in different ways. The biggest number is often the one in the brochure. It is not the space inside your walls.
This guide explains what "carpet area" in an apartment means.
Once you know these terms, you can compare any two flats fairly.
What Is Carpet Area in an Apartment?
The carpet area is the net usable floor area of an apartment. You measure it from the inside face of the outer walls, room by room.
The name comes from a simple idea. It is the area you could cover with a carpet.
You will also see it called carpet area in a flat. The meaning is the same. In real estate, it is the standard measure of the living space you actually get.
What Is Included in Carpet Area
- Bedrooms
- Living and dining rooms
- Kitchen
- Bathrooms and toilets
- Internal passages and entrance lobby inside the flat
- Internal partition walls (under RERA)
What Is Not Included in Carpet Area
- External walls
- Service shafts for pipes and ducts
- Your private balcony or verandah
- Your open terrace
- Common areas such as lobbies, lifts, stairs, and corridors
- Shared amenities such as the pool, gym, or clubhouse
What Is RERA Carpet Area?
RERA is the Real Estate (Regulation and Development) Act, 2016. It gives carpet area one clear legal meaning in Section 2(k).
RERA carpet area is the net usable floor area of an apartment. It excludes the area covered by external walls, service shafts, exclusive balcony or verandah areas, and exclusive open terrace areas. It includes the area covered by internal partition walls.
Why This Matters
RERA requires developers to state the carpet area of each apartment. Sales in a registered project should be based on it, not on a loose "area" figure.
The key detail is the internal partition walls. RERA counts them inside carpet area. Some older builder figures counted only the open floor space inside the rooms. So the same flat can show a smaller number on an older brochure than in the RERA filing.
Do not compare a RERA carpet area with an old brochure figure. Ask which method each number uses.
Where to Check It
Goa projects are registered on the Goa RERA portal at “rera.goa.gov.in”. The registration lists the project and its approved plans. Your agreement for sale must state the same carpet area for your flat.
Carpet Area vs Built-Up Area vs Super Built-Up Area
Builders use three area figures. Each adds more to the one before.
Built-Up Area
A built-up area is the carpet area plus the thickness of external walls. It also includes private spaces such as balconies and utility areas. It is the area covered by the flat itself.
Super Built-Up Area
A super built-up area adds your share of the common spaces. These are lobbies, lifts, stairs, corridors, and often the clubhouse and other shared facilities.
The Loading
The gap between the carpet area and the super built-up area is called the loading.
Loading % = (Super built-up area − Carpet area) ÷ Super built-up area × 100
A higher loading means less of your purchase is usable space inside your flat.
How Big Is the Gap in Real Apartments?
In the Ashray apartments shown below, carpet area is about 68% to 90% of the super built-up area. Most units sit between 68% and 77%. Other units in the same building can fall lower, so always check the exact flat.
Do not trust a "standard" ratio. Each building is different. Check the actual numbers for the flat you want.
Carpet Area vs Plinth Area
Plinth area is a construction term. It is the covered area of a building measured at floor level. It includes the thickness of the walls.
The plinth area is mostly used for construction cost estimates and by government departments. Developers do not sell apartments by plinth area.
If a seller quotes the plinth area, ask for the carpet area as well.
How to Calculate Carpet Area: Formula and Example
The Carpet Area Formula
Carpet area = the sum of (length × width) of every usable room, plus the area of internal partition walls.
The other two figures follow from it:
- Built-up area = Carpet area + external wall area + balcony and similar private areas
- Super built-up area = Built-up area + your share of common areas
Measure in feet or meters. To convert, 1 square meter is about 10.764 square feet.
Real Examples From Ashray Developers Apartments
Here are real carpet, built-up, and super built-up figures from Ashray's apartment projects. They show how much the three numbers can differ.
Chrysalis Phase 1, Nerul Goa
Ashray's Chrysalis Phase 1 has 3 and 4 BHK apartments. The area statement lists all three figures for each unit.
Availability changes, so confirm with the team.
Daffodille, Pilerne-Candolim Road, Goa
Daffodille has furnished studios and 1 BHK apartments.
What These Numbers Teach
The same carpet area can come with different super built-up areas. Units B1, B3, and B5 all have 2,585 sq.ft. of carpet area. Their super built-up areas are 3,430, 3,572, and 3,430 sq.ft. B3 shows a figure about 4% larger for the same usable space.
Priced per super built-up foot, B3 would cost about 4% more than B1 for exactly the same carpet area. This is why you compare by carpet area.
The gap changes from flat to flat. A6 has only about 10% of its super built-up area outside the carpet area. A1 has about 32%. A larger gap often comes from bigger balconies, terraces, or common-area share. Ask for the breakdown.
Small flats show it too. The Daffodille studio is sold as 600 sq.ft., but its carpet area is about 461 sq.ft.
Villas follow a different pattern. In Ashray's villas, carpet area is roughly 50% to 64% of the super built-up area. Villas carry decks, verandas, and larger outdoor areas in the larger figure. Ask what the extra area includes.
How Carpet Area Affects Apartment Pricing
Price per square foot is the most quoted number in real estate. It only means something if you know which area it applies to.
The Same Rate Means Different Prices
Effective rate per carpet foot = Quoted rate per super built-up foot × (Super built-up area ÷ Carpet area)
Use the Daffodille 1 BHK as an example. Its super built-up area is 1.35 times its carpet area. So the real rate per usable foot is about 35% higher than the rate quoted per super built-up foot.
For the Chrysalis A1, the super built-up area is 1.46 times the carpet area. Here, the real cost per carpet foot is 46% higher than the quoted rate.
How to Compare Two Flats Fairly
- Get the total price of each flat, with all charges.
- Get the carpet area of each flat.
- Divide the total price by the carpet area.
- Compare the results.
The flat with the lower cost per carpet foot gives more usable space for your money. Do this before you compare brochure rates.
A flat with a lower quoted rate can cost more per usable foot. A flat with a higher quoted rate can cost less.
Why It Matters for Resale and Rent
Buyers and tenants judge a flat by what they can use. A flat with more carpet area for its price tends to feel better and compare better when you sell.
Small Apartment Carpet: What Does a Small Flat Really Offer?
In a small apartment, every square foot counts. A few extra feet of carpet area change how the flat lives.
Take Ashray's Daffodille studio. It has about 461 sq.ft. of carpet area. That space holds the sleeping area, living area, kitchen, and bathroom. The 1 BHK has about 592 sq.ft., with a separate bedroom.
What to Check in a Small Flat
- Does the layout waste space? Long passages and awkward corners reduce usable area.
- Can you place a bed, wardrobe, and sofa? A queen bed takes about 33 sq.ft. before you add walking space.
- Where does the light come from? A smaller flat feels larger with good windows.
- Is the balcony usable? It sits outside the carpet area but adds living space.
- Is the kitchen big enough? Check the counter space and the door swing.
For small flats, ask for the dimensioned plan. Draw your furniture to scale on it.
Our guide to studio apartments in Goa explains how studios and 1 BHK flats work as rental investments.
Apartment Dimensions and the Floor Plan
The floor plan shows what you are buying. Learn to read it.
What a Good Floor Plan Shows
- Room dimensions in feet or meters, marked on each room
- Wall thickness, with thick lines for external walls and thinner lines for partitions
- Balconies and terraces, labelled
- Service shafts and ducts, marked
- Door and window positions
- The north direction
- A scale, so you can check sizes
How to Check a Floor Plan
- Look for the dimensions in every room. If there are none, ask for a dimensioned plan.
- Check that the total carpet area matches the agreement.
- Look at wall lines. Thick lines for walls and shafts do not count as carpet area, except for partitions.
- See where the balcony sits. It is outside the carpet area.
- Compare the plan with the approved plan on the RERA portal
Red Flags on a Floor Plan
- No dimensions on the rooms
- No stated carpet area
- Areas that do not add up
- A plan that differs from the one in the agreement
How to Verify Carpet Area Before You Buy
Do not rely on a brochure. Verify the number at three points.
Step 1: Check the RERA Filing
Search the project on “rera.goa.gov.in”. Look at the approved plans and the carpet area listed for the apartment types.
Step 2: Check the Agreement for Sale
The agreement should state the carpet area of your exact flat. It should also state the balcony and terrace areas separately.
Have your own lawyer read it. Compare it with the figure in the RERA filing.
Step 3: Measure at Possession
When the flat is ready, measure the rooms. Use a laser measure or tape.
Add up the room areas and compare the total with the agreement. Allow for the internal partition walls, which a room measurement does not capture.
If the Carpet Area Is Less Than Promised
Most RERA agreements let you ask for a refund of money paid for an area you did not receive. Check the exact clause in your agreement, including any small variation it allows. Ask your lawyer how it applies.
Do not accept possession until the area is settled in writing.
Questions to Ask a Builder About Carpet Area
Take this list to your first meeting.
- What is the RERA carpet area of this exact flat?
- Is that the same number in the agreement for sale?
- What is the built-up area and the super built-up area?
- What is the loading for this flat?
- What does the extra area include: balcony, terrace, common areas?
- How is the price calculated, on carpet area or super built-up area?
- What is the balcony area and the terrace area, shown separately?
- Is there a service shaft inside the flat, and how large is it?
- Can I see a dimensioned floor plan with room sizes?
- Does the carpet area include internal partition walls?
A good builder answers all of these without hesitation.
Carpet Area in Ashray Apartments in Goa
Ashray lists carpet, built-up, and super built-up area for its apartments, so you can compare them fairly.
Chrysalis Phase 1 in Nerul has large 3 and 4 BHK apartments in Goa, unfurnished and under construction.
Daffodille on the Pilerne-Candolim Road has furnished studio and 1 BHK apartment in Goa, ready to move in.
Do not take our word for any figure. Ask for the dimensioned floor plan of the unit you like. Check it against the RERA filing. Have your lawyer compare it with the agreement.
For types, costs, and renting, see our guide to buying an apartment in Goa. To judge any builder, read how to evaluate a real estate developer.
Conclusion
Knowing what carpet area in an apartment means protects you from paying for space you cannot use.
Carpet area is the usable floor space inside your walls, with internal partition walls counted under RERA. Built-up area adds walls and balconies. Super built-up area adds a share of common spaces. The gap between carpet and super built-up area is the loading, and it differs from flat to flat.
Always compare by carpet area. Check it against the RERA filing and your agreement. Ask for a dimensioned floor plan, and measure the flat before you accept it.
If you want to see these figures for a real flat, talk to the Ashray team. We will share the floor plan and area details for Chrysalis or Daffodille, and arrange a visit.
This guide is general information, not legal advice. Area rules, agreement terms, and variation limits differ. Confirm the details with a qualified lawyer before you buy.
FAQs
1. What is carpet area in an apartment?
Carpet area is the usable floor space inside an apartment, measured wall to wall. It includes bedrooms, the living room, kitchen, bathrooms, passages, and internal partition walls. It excludes external walls, service shafts, your private balcony or verandah, and your open terrace. It is the space where you can lay a carpet and place furniture.
2. What is the difference between carpet area, built-up area and super built-up area?
Carpet area is the usable space inside your walls. Built-up area adds external wall thickness and private spaces such as balconies. Super built-up area adds your share of common areas such as lobbies, lifts, and corridors. Carpet area is the smallest figure and super built-up area is the largest.
3. How do you calculate carpet area?
Measure each usable room wall to wall, multiply the length by width, and add the results. Then add the area of internal partition walls to match the RERA definition. For example, rooms totalling 697 sq.ft. plus 28 sq.ft. of partition walls give a carpet area of 725 sq.ft. Compare your total with the figure in the agreement.
4. Is the balcony included in carpet area?
No. Under RERA, an exclusive balcony or verandah is outside carpet area, and so is an exclusive open terrace. They count in built-up area. Ask the builder to state the balcony and terrace areas separately. Then you can see exactly what you pay for.
5. How can I check the carpet area before buying a flat?
For Goa projects, check the RERA filing on rera.goa.gov.in. Confirm the agreement for sale states the same carpet area for your flat. Ask for a dimensioned floor plan, and measure the rooms at possession. If the area is less than promised, check the refund clause. Settle it in writing before you accept the flat.