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.
Land Betterment Charge (LBC) & 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 of that betterment. Since 1 Aug 2022 it takes that share through a single Land Betterment Charge (LBC), administered by the Singapore Land Authority (SLA), triggered by a chargeable consented act: a change of use, an increase in intensity / plot ratio, or a lease top-up. It is charged on the uplift in land value the consent creates, using SLA's LBC rate table (by use group and geographical sector, revised periodically).
Watch the name. The LBC replaced the three older levies that older textbooks and past papers still refer to — the Development Charge (DC), the Differential Premium (DP) and the Temporary Development Levy. The idea is unchanged (the State captures part of the uplift it enables by granting consent), but the current answer is one charge, LBC, payable to SLA — not a DC to URA plus a separate DP. Confirm current rates and the valuation basis with SLA / URA.
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.
Working from home — the two schemes that avoid a change of use
If a change of use needs planning permission, how does anyone lawfully run a business from a flat or a condo? Through two standing concessions that let a home stay a home in planning terms while some business goes on inside it. Both cover HDB flats and private residential property alike — the only difference is who you deal with: HDB for a flat, URA for a private home. Clients ask about these constantly, so know which one they need.
| Home-Based Business Scheme | Home Office Scheme | |
|---|---|---|
| Approval needed? | No — no registration, no fee | Yes — register with HDB (flat) or URA (private home) and pay the application fee |
| Scale | Small-scale work to supplement income — baking, private tuition, sewing, hairdressing, freelance work | The administrative office of a business run from home |
| Non-resident workers | None — only people who actually live there may work in the unit | Up to 2 non-residents (employees, partners or directors) |
| Who may run it | Owner, registered occupier or tenant — a tenant needs the owner's consent | Owner, registered occupier or tenant — a tenant needs the owner's consent |
| Signage / advertising at the premises | Not allowed | Not allowed — and no door-to-door soliciting or selling physical goods on site |
| Excluded activities | Anything causing disamenity — noise, smoke, odour, dust, litter, heavy human or vehicular traffic | A published non-permitted list — e.g. beauty/massage, food catering, clinics and pharmacies, retail shops, repair services, manufacturing, courier services, car trading, money lending, commercial schools and large seminars |
The condition that runs through both schemes is the one the exam turns on: the unit must remain a place of residence and the business must stay confined within it, without altering the character of the residential estate. That is precisely why no planning permission is needed — the use has not changed. Push past those limits (a shop front, a stream of customers, staff beyond the cap) and it becomes an unauthorised change of use, enforceable by URA or HDB.
Note what these schemes do not do. The property stays residential for every other purpose: property tax stays on the residential rates, the sale or lease stays GST-exempt, the Residential Property Act still governs who may own it, and an HDB flat still carries its MOP, occupancy cap and subletting rules. A Home Office registration is a planning concession, not a conversion to commercial property.
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. And do not tell a client that registering under the Home Office Scheme turns the home into commercial property: it stays residential for property tax, GST, the RPA and (for a flat) HDB's own rules.
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.
Land Betterment 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 Land Betterment Charge (LBC) is payable to SLA when a consented act raises land value — intensifying use, increasing GFA beyond the site's baseline, lifting a title restriction, or topping up the lease.
- The old Development Charge (DC) and Differential Premium (DP) were consolidated into the LBC on 1 Aug 2022, so quoting them as two separate live charges is a stale-terminology trap.
- 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) → Land Betterment Charge if you intensify or change the use. 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.
- Is it still called a Development Charge in Singapore?
- No. Since 1 August 2022 the Development Charge, the Differential Premium and the Temporary Development Levy have been consolidated into a single Land Betterment Charge (LBC), administered by the Singapore Land Authority. It is levied on the increase in land value arising from a chargeable consented act — a change of use, an increase in intensity or plot ratio, or a lease top-up. Older textbooks and past papers still use the DC and DP names, so recognise them, but give the LBC as the current answer and confirm rates with SLA.
- Can a client run a business from an HDB flat or a condominium?
- Yes, under one of two schemes, both of which apply to HDB flats and private homes. The Home-Based Business Scheme needs no approval at all, but it is limited to small-scale work with no non-resident employees, no signage and no disamenity to neighbours. The Home Office Scheme must be registered with HDB (for a flat) or URA (for a private home) for a fee, and allows up to two non-residents to work there, but excludes a published list of activities such as food catering, clinics, retail shops and beauty or massage services. Under both, the unit must remain a place of residence — that is why neither counts as a change of use — and the property stays residential for property tax, GST, the Residential Property Act and HDB's own rules. Confirm the current conditions with HDB or URA.
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