What Is Plot Ratio? A Complete Guide for Property Owners & Investors
What Is Plot Ratio? A Deep Dive (Easy Singapore Guide)
Plot ratio in one sentence
Plot ratio (also called Floor Area Ratio / FAR) is a planning control that limits how much total floor area (GFA) you can build on a piece of land. It controls density — not “height”.
1) The formula (and why it matters)
Plot Ratio is calculated like this:
Example:
- Land area: 1,000 sqm
- Plot ratio: 2.8
- Max allowable GFA: 1,000 × 2.8 = 2,800 sqm
2) Plot ratio vs height: why “more plot ratio” doesn’t always mean “taller”
A higher plot ratio gives you more total floor area, but the building form is still limited by other controls: height control plans, aviation limits, urban design rules, setbacks, site coverage, conservation guidelines, etc.
Example: Plot ratio 3.0 but height limit 5 storeys → you may need a wider floorplate, not a taller building.
3) Why URA uses plot ratio
- Manages density: prevents overcrowding and overbuilding
- Protects infrastructure capacity: roads, MRT load, drainage, utilities
- Improves urban quality: sunlight, wind flow, open space, neighbourhood character
4) Typical plot ratios (general guide)
These are broad ranges — actual controls depend on zoning and the URA Master Plan.
| Area / Use Type | Typical Plot Ratio Range | What it usually implies |
|---|---|---|
| Landed housing | ~0.4 – 1.4 | Low density, limited total floor area |
| Low-rise residential | ~1.4 – 2.1 | Moderate density, often mid-rise form |
| High-rise residential | ~2.8 – 4.9 | Higher density; height depends on controls |
| Mixed-use / city fringe | ~3.5 – 5.6 | More intensity; tighter urban design rules |
| CBD core (selected zones) | 7.0 – 25+ | Very high intensity; complex planning framework |
5) Plot ratio depends on GFA — and GFA is not the same as “built-up area”
Plot ratio is applied to Gross Floor Area (GFA). Certain spaces may be excluded from GFA (depending on rules and approvals), while other areas count fully.
- Developers optimise efficiency by planning layouts smartly within the allowed GFA.
- Don’t assume balconies, carparks, M&E, terraces are always excluded — it depends on URA criteria.
6) Why plot ratio is critical in en-bloc and redevelopment pricing
Plot ratio can directly affect land value because it caps the maximum buildable floor area. More GFA usually means more potential units / lettable space (subject to design and approvals).
- Under-utilised plot ratio can be a key driver for redevelopment interest.
- “Plot ratio upside” is common language in en-bloc conversations — but must be verified properly.
