What is BUA, and how is it different from GFA?
BUA is the built-up area of a property; GFA is the gross floor area that planning and developer rules count. Which areas each includes depends on the developer and authority guidelines.
The short answer
BUA (built-up area) is the area of a property that is built, while GFA (gross floor area) is the floor area that planning and developer rules count towards the limits for a plot. The two are often different, because some spaces may be counted in one and not the other, and the exact definitions depend on the developer and authority guidelines for your community. Extensions, enclosed areas, garden suites and mezzanines usually add GFA. Structural Solutions measures both from your drawings for the application.
What you need to know
- Why it matters: Extension limits and charges are based on the floor area counted.
- Adds GFA: New rooms, enclosed areas, garden suites and mezzanines.
- Check first: Each community has its own guidelines.
- Measured from drawings: We measure the existing and added area.
Documents you may need
- Title deed and owner ID
- Affection plan or site plan
- Existing drawings or as-built drawings
- Photos of the area
- Developer NOC (where the community has a developer)
Who does what
Step by step
We confirm the exact route for your project.
| Step | Approval route | Guides |
|---|---|---|
| Check what is allowed Structural Solutions | Community guidelines, floor area and the existing structure. | GFA rules |
| Drawings and calculations Structural Solutions | Architectural drawings and stamped structural calculations. | Structural calculations |
| Developer NOC Developer | Where the community has a developer. | Developer approvals |
| Building permit Approved consultant → DM, DDA or Trakhees | Depending on the area. | Approvals |
| Inspection and completion Developer and authority | Owner letter and completion certificate. | Sign-off |
Questions
Related questions
Does a mezzanine add GFA?
Yes, a mezzanine counts as added GFA.
Does a garden suite count as GFA?
Yes.
Why do developers charge on GFA?
Extension charges are based on the added floor area.
Where do I find my villa's GFA?
In the approved drawings, which we can obtain for you.
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