HDB Interior Design Singapore: Bathroom Reno Rules
HDB interior design Singapore owners must plan bathroom works around the HDB renovation permit, which takes about 2 weeks to process. Get the timing wrong and your BTO renovation timeline slips by a month.

What HDB lets you hack in a bathroom
HDB allows re-tiling of the wet areas and replacing sanitary ware. You cannot hack structural walls, beams, columns, or slabs. The floor screed can be affected only within HDB limits, and your HDB Licensed Renovation Contractor submits the exact scope. Sound HDB interior design respects the structure first, then the style, so the bath stays safe and legal.
The household shelter stays untouched. If your bathroom sits next to the bomb shelter, the shelter wall remains as issued. Plan the new tiles around that fixed edge.
HDB renovation permit and the paperwork
Submit the reno application through the HDB Directory of Renovation Contractors system using an LRC. Processing runs about 2 weeks. Only works listed get approval, so the bathroom plan must be final before you apply.
Hacking and drilling follow HDB noise rules. Work runs weekdays 9am to 6pm, and none on Sundays or public holidays. Plan your tiling and jackhammer days inside that window, because the neighbours rely on the quiet days.
HDB interior design choices for a safer bath
Safety starts with the floor. Use HDB-approved non-slip tiles in the wet area and a grab bar near the shower if elders live with you. A curbless tray reads modern and removes a trip edge.
I favour a wall-hung vanity in small 3-room baths of about 60 to 65 sqm. The floor shows under it, so the room looks bigger and cleans faster. Pair it with a round mirror and a warm LED for a soft feel.
Step-by-step to a bathroom reno
- Confirm the permit is approved before any works. Book your LRC early.
- Strip the old fittings. Keep the structural walls and the bomb shelter intact.
- Hack the old tiles within HDB limits and within the noise window.
- Waterproof the floor and the lower wall, then do a flood test for 24 hours.
- Re-tile with non-slip approved tiles and fit new sanitary ware.
- Install the vanity, mirror, and heater, then hand over after inspection.
Materials and waterproofing HDB expects
HDB expects proper waterproofing of wet areas before tiling. Use cement-based screed and approved tiles. Quartz or solid surface works for the vanity top, while laminate carpentry suits the cabinet if kept dry.
Vinyl or laminate flooring is for dry zones only. The bathroom itself stays tiled. HDB-approved flooring rules apply to the rest of the flat, not the wet room. Keep the two zones clear in the plan.
Your bathroom reno lives or dies on the rules, not just the look. Plan it inside one build that covers the permit, the waterproofing, and the rest of the flat. Whole-house customization gives you one accountable team that respects HDB limits and still delivers the bath you want, so the result passes inspection and serves you for years.
