Updated September 2026. This is general planning information, not a site-specific development opinion.
GFA and gross plot ratio answer different parts of one question
URA defines Gross Plot Ratio as the ratio of a building's Gross Floor Area to its site or plot area. The Master Plan plot ratio guides permissible development intensity, while the GFA handbook explains which spaces are counted, partly counted or excluded. Use the current URA GFA handbook.
A simple illustration is not an approval
A 1,000 sqm site with an applicable GPR of 2.8 suggests a theoretical 2,800 sqm maximum GFA before site-specific assessment. URA notes that the Master Plan GPR is an upper bound and may not be achievable because of plot shape, topography, setbacks, height limits, ground conditions or other technical requirements.
What the harmonised framework changed
Historic articles may describe transitional rules that depend on submission dates and development type. For a current project, identify the applicable circulars and use the current handbook rather than applying an archived allowance mechanically.
Before assigning redevelopment value
- Confirm site area, zoning and applicable GPR in URA SPACE.
- Check road and drainage reserves, setbacks and height controls.
- Identify conservation or special-area constraints.
- Engage a registered architect or other qualified person.
- Obtain written planning advice where uncertainty is material.
See URA's current residential gross plot ratio guidance. A formula is an initial screen, not development permission.