Small bathroom design for resale flats in Singapore

A resale HDB bathroom is often tight, and making it work takes more than new tiles. This HDB Renovation Guide Singapore chapter explains the HDB rules that apply to a small resale bathroom and gives a practical checklist you can use. The core answer is this. Get HDB approval for any toilet renovation, protect the waterproofing, and use wall-hung and corner fittings to win space in a small room.

Why resale bathrooms need care

Resale toilets may have older piping and worn tiles from the previous owner. Unlike a BTO, there is no 3-year defect period, so you are free to renovate, but you must still follow HDB's renovation control rules. Hacking of structural walls, beams, and columns is banned, and any toilet work needs a permit. The room is typically 2 to 4 square metres, so every fitting must earn its place.

HDB rules that apply

• Any toilet renovation needs an HDB renovation permit via the RCRS by an HDB-registered contractor.
• Do not hack structural walls, beams, or columns in or near the bathroom.
• New waterproofing is your responsibility once you renovate; do it properly to avoid seepage to the unit below.
• Noisy works like hacking and drilling run Monday to Saturday, 9am to 6pm only.

A practical checklist

1. Inspect for water seepage, hollow tiles, and faulty power points before you start.
2. Confirm the plumbing layout with your contractor and HDB if you move any point.
3. Pick a wall-hung basin and a corner shelf to free the floor.
4. Choose a sliding or pivot door that suits the tight entry.
5. Select WELS-rated fittings to cut water use and the monthly bill.
6. Keep the lighting within HDB's allowed electrical points, using LED.

Tips to make a small room feel bigger

• Use large-format light tiles to reduce grout lines and open the eye.
• Add a recessed niche in the shower wall instead of a bulky caddy.
• Mount the heater and light on the ceiling to keep walls clear.
• Choose a glass partition over a full wall to keep light flowing.
• Pick a light, low-VOC paint on the ceiling so the small room stays fresh.

Frequently asked questions

Can I move the toilet bowl to the other side? Moving soil pipes needs HDB approval and careful waterproofing, so discuss it with your registered contractor first.

How much does a small resale bathroom cost? A basic redo runs S$3,000 to S$6,000. A full renovation with new layout and fittings reaches S$6,000 to S$12,000.

How long does it take? Usually two to four weeks on site, plus the permit queue of two to four weeks before work begins.

A small resale bathroom works best when the plan respects HDB's rules and the room's limits. Approve the permit, protect the waterproofing, and pick wall-hung fittings. Do that and even a 2 square metre toilet feels ordered and calm.