Carpet area vs SBA vs UDS explained simply: carpet area is the exact floor space inside your flat where you can walk, Super Built-Up Area (SBA) is the total area you pay for including shared common spaces, and Undivided Share of Land (UDS) is your legal share of the total land plot where the building stands. When you look at a modern housing project like Brigade Granada—a large 20.19-acre township on Whitefield–Hoskote Road in Bangalore—understanding these three terms is very important.
They help you figure out how much real space you get, how the price per square foot works, and how much your property will be worth in the future.
Under the RERA law (Real Estate Regulation and Development Act, 2016), Carpet Area means the actual floor area inside your apartment. It does not include outer walls, lift shafts, or main balcony areas, but it includes the space taken by small inner walls dividing your rooms.
To put it in very simple words: If you lay down a carpet from wall to wall inside your house, that is your carpet area.
At Brigade Granada, a typical 3 BHK apartment with a Super Built-Up Area (SBA) of around 1,600 sq. ft. gives you a usable RERA carpet area of about 1,120 sq. ft. This is the inner space where you put your furniture, spend time with family, and live every day—including your hall, bedrooms, kitchen, and inner passages.
Super Built-Up Area (SBA)—also called the saleable area—is the total area the builder uses to calculate the home price. It adds up your carpet area, outer wall thickness, private balconies, and a shared portion of all common areas in the society.
Common facilities included in the SBA are:
The extra gap between your Carpet Area and Super Built-Up Area is called the loading factor.
$$\text{Loading Factor (\%)} = \left( \frac{\text{Super Built-Up Area} - \text{Carpet Area}}{\text{Carpet Area}} \right) \times 100$$
At Brigade Granada, 80% of the 20.19-acre land is kept open for parks, green space, and world-class amenities. Because of these big facilities, a standard loading factor of 30% to 35% applies. This means every buyer gets a fair share in the township's high-end common areas without losing out on room space inside the house.
Undivided Share of Land (UDS) is the small piece of land that legally belongs to you out of the total plot where the project is built. It is called "undivided" because you cannot point to one specific patch of grass on the ground and say it is yours—you own a shared fraction of the overall property land.
In tall high-rise projects like Brigade Granada—which has 14 towers (3B+G+24 floors) and about 2,000 apartments spread across 20.19 acres—every flat owner gets a proportional share of that big plot.
Your UDS depends on the size of your flat compared to all other flats in the project:
$$\text{Your UDS} = \left( \frac{\text{Your Flat's Super Built-Up Area}}{\text{Total Super Built-Up Area of All Flats}} \right) \times \text{Total Project Land Area}$$
A building structure loses value as it gets older, but the land under it gains value over time. Since Brigade Granada is spread over a huge 20.19-acre plot on the fast-growing Whitefield–Hoskote Road, having a clear UDS gives your property a strong, rising land value for many years.
| Feature | Carpet Area | Super Built-Up Area (SBA) | Undivided Share of Land (UDS) |
|---|---|---|---|
| Main Focus | Real usable floor space inside your flat | Total area used to set the price | Your share of ownership in the total land |
| Shown in Agreements | Yes (Compulsory under RERA rules) | Used for calculating cost and price | Yes (Written in the legal sale deed) |
| What It Includes | Bedrooms, living room, kitchen, bathrooms, inner walls | Carpet area, walls, balconies, lift area, clubhouse, lobbies | Proportional share of the 20.19-acre plot |
| Key Benefit | Tells you how big your living space actually is | Covers construction costs of shared luxury facilities | Guarantees land value and long-term price growth |
| Brigade Granada Example | ~1,120 sq. ft. (in a 3 BHK) | ~1,600 sq. ft. (in a 3 BHK) | Shared percentage of the 20.19-acre land |
Carpet Area is the real usable space inside your flat where you can walk. Super Built-Up Area (SBA) adds wall thickness, balconies, and your share of shared spaces like lobbies and clubhouses. UDS (Undivided Share of Land) is your legal piece of ownership in the total land plot.
Builders use Super Built-Up Area so that the cost of constructing shared places—like the 50,000 sq. ft. clubhouse, lift areas, and security gates at Brigade Granada—is split fairly among all buyers.
Yes, under RERA guidelines, every builder must clearly mention the exact Carpet Area in the agreement and base the unit's pricing on it so buyers are not confused.
For large luxury communities with big parks and clubhouses, a loading factor between 30% and 35% is completely normal. At Brigade Granada, this loading covers access to 80% open green areas and modern lifestyle features.
Banks check UDS because building structures get old over time, but land values go up. A good UDS share in an active area like Whitefield–Hoskote Road makes your home a safer asset for the bank and a better investment for you.
In most apartment societies, maintenance fees are charged per square foot of Super Built-Up Area (SBA). This helps pay for keeping both the common parks, lifts, and clubhouse in top condition.
No, according to RERA rules, balconies and utility areas are counted separately from the main Carpet Area, though they are included inside the total Super Built-Up Area (SBA).
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