Paper 1 · Planning & Development
Planning & Development Control in Singapore (URA, Zoning, GFA)
What can be built on a site — its use and how intensively it can be developed — is controlled by the Urban Redevelopment Authority (URA), the national planning authority. The exam tests the planning instruments and the plot-ratio/GFA relationship.
Concept Plan vs Master Plan
| Concept Plan | Master Plan | |
|---|---|---|
| Horizon | Long-term, 40–50 years | Medium-term, 10–15 years |
| Nature | Strategic / broad direction | Statutory — legally binding |
| Reviewed | About every 10 years | About every 5 years |
| Sets | Big-picture land & infrastructure | Zoning + plot ratio for each parcel |
Zoning — what a site may be used for
| Zone | Typical use |
|---|---|
| Residential | Homes (landed, flats, condos) |
| Commercial | Offices, shops, retail |
| Business 1 / Business 2 | Light industry / heavier industry |
| White site | Flexible mix decided by developer |
| Civic & Community / Open Space | Institutions, parks |
Plot ratio & GFA (the most-tested calculation)
Plot ratio (Gross Plot Ratio, GPR) is the ratio of maximum permitted gross floor area (GFA) to the land area. The formula: GFA = plot ratio × site area. Higher plot ratio = more buildable floor area = greater development potential and value.
Worked example: a site of 1,000 m² with a plot ratio of 2.8 has a maximum GFA of 1,000 × 2.8 = 2,800 m². Raise the plot ratio to 3.5 and the GFA jumps to 3,500 m² — same land, more sellable space.
| Built form | Indicative plot ratio |
|---|---|
| Landed housing | ~1.4 |
| Low-rise flats/condos | ~1.4 |
| Mid-rise | ~1.6 – 2.1 |
| High-rise | ~2.1 – 2.8 |
| Very high density | ~3.5+ |
What counts as GFA is largely the covered floor area of a development; URA rules set out certain exclusions (e.g. some void/communal spaces). Knowing GFA is conceptually 'the sellable area cap' is enough for the exam.
Development Charge (DC) & betterment
When you intensify or change the use of a site (e.g. raise the plot ratio, or switch residential → commercial), you capture an increase in land value — and the State takes a share via a Development Charge. DC is based on the uplift from the Development Baseline to the Development Ceiling, using rates in URA's DC Table (revised roughly half-yearly, by use group and geographical sector).
Approvals, change of use & other controls
- Written permission from URA is needed to develop or change use — even with no building works. Provisional Permission precedes the formal Grant.
- Temporary permission may be granted for a time-limited use.
- Conservation status limits alterations to gazetted buildings; URA Guidelines govern setbacks, height and use.
- Other agencies matter too — e.g. BCA for structural/building works.
- A high plot ratio underpins en-bloc / collective-sale potential — redevelopment value that can offset an ageing lease.
The trap
Confusing plot ratio with GFA. Plot ratio is the multiplier; GFA is the result (GFA = plot ratio × site area). Also: a change of use needs planning permission even with zero construction — many candidates miss that.
The approval workflow
- A development needs planning permission from URA: you submit a Development Application, and URA may grant Provisional Permission and then Written Permission (with conditions).
- Separately, building works need building-plan approval from BCA under the Building Control Act, supervised by a Qualified Person (architect/engineer).
- On completion you get a Temporary Occupation Permit (TOP) — you may occupy — and later the Certificate of Statutory Completion (CSC), the final sign-off.
Development charge, GFA & plot ratio
- Gross Floor Area (GFA) is the total covered floor area; the Gross Plot Ratio (GPR) = GFA ÷ site area, and it caps how much you can build.
- A Development Charge (DC) is payable when you intensify use or increase GFA beyond the site's baseline (the uplift in value is taxed).
- A Differential Premium (DP) is payable to the State to lift a title restriction or top up a lease when redeveloping (e.g. to a higher plot ratio).
- Height limits, setbacks and building-envelope controls, plus any conservation status, further shape what can actually be built.
Exam takeaway
Trace a site's potential through the chain: Master Plan → zoning (what use) → plot ratio (how much GFA) → development charge if you intensify. That sequence answers almost every planning question.
Apply it · the IRAC method
A client buys a two-storey shophouse in a conservation area zoned 'Commercial' under the Master Plan and tells the salesperson he plans to demolish it, add extra floors to maximise the plot ratio, and convert the upper floors into residential apartments.
- IIssue: Can the owner freely redevelop, add GFA, change the use of a conserved shophouse, and does he need any approval?
- RRule: Land use in Singapore is governed by the URA Master Plan, which sets the zoning (permitted use) and the plot ratio that caps the allowable Gross Floor Area (GFA) for each site. Any change of use, addition/alteration, or redevelopment requires planning permission through URA's development control process, and buildings within a conservation area are subject to conservation guidelines that generally require the facade/building to be retained rather than demolished.
- AApplication: The shophouse is zoned Commercial, so a switch to residential apartments is a change of use needing URA planning approval, which may be refused. Additional floors are limited by the site's plot ratio and permissible GFA and are not automatic. Because it sits in a conservation area, outright demolition is normally not allowed — conservation guidelines require sensitive restoration and retention of the building.
- CConclusion: Advise the client that he cannot simply demolish or change the use; he must obtain URA planning permission, respect the zoning, plot ratio/GFA limits, and conservation guidelines, and should confirm the current requirements with URA before committing.
Worked case study · Section B style
An owner wants to convert a conservation shophouse's upper floors from residential to a backpackers' hostel and build a rear extension. • Change of use + building works • It sits in a conservation area
- (i) A material change of use generally needs Written Permission from URA
- (ii) The addition/extension works need the relevant building approvals (e.g. BCA)
- (iii) Conservation status adds façade-retention requirements and URA conservation approval
- (iv) No approvals are needed as long as the owner owns the property
- A.(i), (ii) and (iii) only
- B.(i) and (iv) only
- C.(iii) only
- D.All of the above
Show answer & explanation
Answer: A. (i)–(iii) are correct: change of use → WP, works → building approvals, conservation → extra controls. (iv) is the trap — ownership does not waive planning, building or conservation approvals.
Ready to test yourself?
Practise exam-style questions on Planning & Development — with instant answers and explanations.
Practise Planning & Development questions →Common questions
- What is plot ratio?
- Plot ratio is the ratio of a development's maximum permitted gross floor area (GFA) to its land area. Multiply plot ratio by site area to get the allowable GFA.
- Do I need planning permission to change a property's use?
- Generally yes. A change of use (for example, residential to commercial) usually requires URA planning permission even when no building works are involved.
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