If you are buying a flat in Hyderabad and the brochure quotes one number while the sale agreement quotes another, you are not reading two different units — you are reading three different ways of measuring the same apartment. Carpet area, built-up area and super built-up area each describe a different slice of the property, and the gap between them is where most pricing confusion happens.
This guide explains what each term actually means under RERA, how the numbers are calculated in Telangana, and what to verify before you sign anything. For the broader buying workflow, also see our land buying checklist and the Telangana property registration process.
Carpet Area: The Floor You Actually Live On
Carpet area is the net usable floor space inside the apartment — the area where you can literally lay a carpet. Under Section 2(k) of the Real Estate (Regulation and Development) Act, 2016, it is defined as the area within the walls of the apartment, excluding the external walls, services shafts, exclusive balconies, verandahs and exclusive open terraces, but including the area covered by the internal partition walls.
This is the only number that reflects what you can actually use. Two flats with the same super built-up area can have meaningfully different carpet areas depending on how the developer designed the common spaces.
Built-Up Area: Carpet Plus Walls and Balconies
Built-up area is the carpet area plus the thickness of the internal and external walls of the apartment, plus any utility ducts within the apartment, plus the balcony area. As a rule of thumb, walls and balconies typically add 10-15% on top of the carpet area, so built-up area is usually 1.10-1.15× the carpet figure.
Super Built-Up Area: The Saleable Number
Super built-up area is the built-up area plus a proportionate share of common spaces — lift lobbies, staircases, security rooms, the clubhouse, the gym, corridors, and other amenities serving the tower. The ratio of common-area allocation to private area is called the loading factor.
For most residential projects in Hyderabad the loading factor sits between 25% and 40%. So if a project quotes a 1,800 sq.ft super built-up flat at a 30% loading, the actual carpet area is roughly 1,260 sq.ft. RERA mandates that the price quoted on the agreement be on carpet area, but most marketing material continues to lead with super built-up because the headline number looks bigger.
How the Three Numbers Compare
Take a typical 3 BHK in West Hyderabad sold as 2,200 sq.ft super built-up:
- Super built-up area: 2,200 sq.ft (the marketed number)
- Built-up area: ~1,650-1,750 sq.ft (after stripping common area share)
- Carpet area: ~1,400-1,540 sq.ft (after stripping walls and balconies)
If the per-sq.ft rate is quoted on super built-up, you are paying for circulation and amenities you share with the entire tower. The per-carpet-sq.ft rate is the only one that lets you compare two projects fairly.
What RERA Requires Developers to Disclose
Under the Telangana RERA framework, every registered project must disclose carpet area for each apartment configuration, and the sale agreement must price the unit on carpet area. The carpet area is also mandatorily uploaded to the project’s RERA listing. If a builder refuses to share carpet area or only quotes super built-up, that itself is a red flag worth flagging in writing.
Buyer Checklist Before You Sign
- Ask for the project’s RERA registration number and verify the carpet area on the official Telangana RERA portal.
- Insist that the sale agreement quotes price per carpet sq.ft alongside the super built-up figure.
- Compare the loading factor across shortlisted projects — anything beyond 35% deserves a closer look at what amenities you are paying a share of.
- Cross-check the floor plan dimensions against the carpet area number; multiply length × breadth of each room and add it up.
- Confirm balcony and utility area are listed separately and not bundled into carpet figures.
Why This Matters at Resale Too
Resale buyers and bank valuers also work off carpet area when comparing comps in the same micro-market. A flat sold to you on inflated super built-up numbers will not magically command the same loading at exit. Knowing your real carpet figure protects both your purchase decision and your eventual resale price.
Related Reading
- Building completion certificate: what to verify before possession
- 15 real estate terms every Indian homebuyer should know
- Property registration process in Telangana
- Things to check before buying land in Hyderabad
- Why bigger luxury apartments are rising in Hyderabad
What is the difference between carpet area and super built-up area?
Carpet area is the actual usable floor space within walls, while super built-up area includes common areas like lobbies, staircases, and amenities. Carpet area is typically 60-70% of the super built-up area.
Why is understanding area measurements important for homebuyers?
Knowing the difference helps buyers accurately compare property prices, understand what they are paying for, avoid confusion during purchase, and ensure they get the livable space they expect.
How does Auro Realty ensure transparency in area measurements?
Auro Realty follows RERA guidelines for transparent area disclosure, clearly specifying carpet area, built-up area, and super built-up area in all project documentation and agreements.
