BUA vs Carpet Area vs Sellable Area: Dubai Apartment Sizes Explained

BUA, or built-up area, is your apartment measured with internal walls and balconies included. Carpet area is the usable floor space you can actually walk on. Sellable area is the figure quoted on your contract. In Dubai, the title deed records your unit’s area excluding shared spaces like lobbies and corridors, and balconies are usually counted in.

Two listings, both saying 1,150 sq.ft, can hold apartments of visibly different sizes once you are standing inside them. The difference is not dishonesty; it is that Dubai listings quote different area definitions without saying which one. If you learned real estate terms in India, where carpet area has a legal definition under RERA, the confusion doubles, because Dubai uses the same words differently. This guide untangles all of it, then walks one real floor plan through every measurement.

The three measurements, side by side

• Built-up area (BUA): includes internal rooms, walls, balconies and terraces; excludes shared lobbies and corridors; seen in developer brochures and listings
• Carpet / net area: includes usable internal floor space only; excludes walls, balconies and shafts; rarely quoted in Dubai, common in India
• Sellable area: includes unit area as defined in your SPA, typically internal area plus balcony; excludes common areas (in Dubai practice); seen in sales contracts, Oqood and title deed

What is built-up area (BUA)?

BUA is the whole envelope of your unit: every room, the thickness of the internal walls, and outdoor spaces that belong to the unit such as balconies and terraces. It is the most generous number a listing can honestly quote, which is why it is the one listings usually do quote. Two apartments with identical BUA can differ meaningfully in usable space depending on wall thickness, layout efficiency and how much of the total sits on the balcony.

What is carpet area?

Carpet area, called net or usable area in Dubai, is the space you could theoretically carpet: internal floor area with walls, balconies and shafts stripped out. Dubai listings almost never quote it, which is worth knowing if you are arriving from the Indian market where RERA requires it. When comparing a Dubai listing to an Indian one, you are almost never comparing the same measurement, and the Dubai figure will always look bigger for the same physical space.

What does sellable area mean in Dubai?

Sellable area is the number your Sale and Purchase Agreement is priced on, and in Dubai practice it is the unit’s area excluding common spaces, with balconies generally included. This is also, importantly, the basis of the area registered with the Dubai Land Department: the figure on your Oqood during construction and your title deed at handover reflects your unit, not a share of the lobby. Dubai practice is cleaner than markets that load common areas into a super built-up figure, but developers do differ on details like how terraces are weighted, so the SPA’s definition clause is always worth reading.

How much of a Dubai apartment is usable space?

There is no published official ratio, and any blog quoting a universal efficiency percentage is inventing precision. What actually drives the answer: balcony share (a 1,100 sq.ft unit with a 150 sq.ft wraparound balcony lives differently from one with a 60 sq.ft Juliet), wall and shaft layout, and floor plan efficiency, meaning how much area corridors inside the apartment consume. The practical move is not to hunt for a magic percentage but to read the floor plan, which every credible developer publishes with dimensioned rooms.

A worked example: reading one 2-bedroom floor plan

Take an illustrative 2-bedroom at 1,150 sq.ft sellable area. The floor plan shows a 140 sq.ft balcony, so the internal envelope is about 1,010 sq.ft. Walls and shafts in a typical mid-rise consume a slice of that, leaving usable internal space somewhere near the low 900s. None of this is hidden; it is all readable from the plan. When you compare that unit against another listed at 1,150 sq.ft with a 40 sq.ft balcony, the second one has roughly 100 sq.ft more indoor living space at the same headline size and possibly the same price. That comparison, not the headline number, is where value hides.

This is also why price per square foot comparisons between buildings need care: AED 1,500 per sq.ft on a balcony-heavy tower and AED 1,550 on an efficient floor plan can invert once you price the indoor space alone.

The takeaway

Headline square footage is a starting point, not a verdict. Read the floor plan, separate indoor from outdoor space, and recompute the price on what you will actually live in. At Pearlshire we publish dimensioned floor plans for every Bond Enclave and Bond Living residence precisely so buyers can do this arithmetic before a viewing, not after a purchase. If you want to see how BHK labels map to real sizes and prices, our BHK meaning guide carries the full breakdown.