LayeredHDB Bathroom Renovation Cost in Singapore (2026 Price Guide)
Most HDB bathroom renovations land between S$5,000 and S$15,000. Waterproofing is the part you should never trim. Here is the breakdown.
A bathroom is small, but it is one of the most technical rooms in the home: plumbing, waterproofing, tiling, glass and fittings all meet in a few square metres. Here is what to expect for the HDB bathroom renovation cost in Singapore in 2026, based on ranges quoted by local renovation guides.
Ranges differ between sources and between older and newer flats. They are a guide for checking quotes.
HDB bathroom renovation cost by scope
| Scope | Typical range per bathroom |
|---|---|
| Refresh: new fittings, vanity, accessories, tiles stay | S$3,000 – S$5,000 |
| Standard rebuild: hack and retile, new waterproofing, new fixtures | S$5,000 – S$8,000 |
| Full redesign with layout changes | S$8,000 – S$12,000+ |
| Premium with rain shower, frameless glass, designer fittings | S$20,000 – S$40,000 (more common in condos) |
Many guides put the typical full HDB bathroom renovation at around S$8,000 to S$15,000, depending on specification.
Typical cost components
- Plumbing: roughly S$800-S$2,500
- Fixtures and fittings: S$1,500-S$8,000 or more
- Glass, vanity and carpentry: about S$1,200-S$4,000
- Waterproofing membrane: often quoted S$400-S$1,500, roughly 10-15% of the bathroom cost
Why you should not skimp on waterproofing
Waterproofing is what stops leaks into the flat below, which is a costly dispute and a headache for neighbours. Make sure the quote states the waterproofing system, how many coats, and the height it covers on shower walls. Shower areas are commonly waterproofed to around 1.8 metres, but confirm the current requirement with your contractor. Ask whether the waterproofing carries a written warranty and how long it lasts.
A worked example: one HDB bathroom rebuild
Adding the component ranges above for a standard rebuild:
| Item | Low | High |
|---|---|---|
| Plumbing | S$800 | S$2,500 |
| Fixtures and fittings | S$1,500 | S$8,000 |
| Glass, vanity and carpentry | S$1,200 | S$4,000 |
| Waterproofing | S$400 | S$1,500 |
| Total, before hacking and tiling labour | S$3,900 | S$16,000 |
The spread explains why a bathroom can cost S$5,000 or S$15,000: it is mostly the fixtures and glass you choose, and whether the layout moves.
What changes the price
- Hacking old tiles versus tiling over, which is only an option in certain conditions.
- Changing the layout, such as moving the toilet bowl, which needs plumbing work and may need approval.
- Wall and floor tile choice, including large-format tiles, which cost more to lay.
- Shower enclosure: a glass screen versus a curtain.
- Resale condition: older pipes and floor traps may need replacing. See HDB renovation costs for the BTO and resale difference.
Ways to save without risking leaks
- Keep the layout. Moving the toilet bowl, shower or floor trap adds plumbing and tiling work.
- Spend on what is hidden. Waterproofing, pipes and drainage matter more than decorative tiles.
- Choose standard tile sizes and fittings. Large-format tiles and designer fittings add cost.
- Refresh instead of rebuild if the existing tiles and waterproofing are sound. Only an inspection can confirm this.
- Ask whether the works need an HDB permit. Hacking generally does, and your registered contractor applies. See the HDB renovation rules.
Common mistakes
- Tiling over old waterproofing without testing it.
- Skipping the water-ponding test, which checks that the waterproofing holds before tiles go down.
- Forgetting ventilation, which leads to mould in a humid climate.
- Choosing slippery floor tiles for a wet area, especially with children or elderly family.
What a good bathroom quote lists
A clear quote names the waterproofing system and the number of coats, the height it covers on shower walls, and whether a water-ponding test is included. It lists the tile size and finish, the fixture brands and models, the floor trap and drainage work, and what hacking and debris removal cost. It should also state the warranty period for the waterproofing and who to call if it fails. If a quote is a single line for "bathroom works", ask for it to be broken down.
Questions to ask before you sign
- Is the quote itemised by hacking, waterproofing, tiling, plumbing and fittings?
- Which waterproofing product is used, and what is the warranty?
- Is a water-ponding test done before tiling?
- Who handles any HDB permit? See the HDB renovation permit guide.
Frequently asked questions
How much does it cost to renovate an HDB bathroom?
A full HDB bathroom renovation is commonly quoted around S$5,000 to S$12,000 depending on scope, with many homeowners spending roughly S$8,000 to S$15,000 for a complete job.
Is waterproofing included in a bathroom renovation?
It should be, but check the quote. A proper rebuild includes a new waterproofing layer, a water test and a written warranty.
Can I renovate just one bathroom?
Yes. Many homeowners refresh the master bathroom and leave the common bathroom for later. Compare itemised quotes from HDB interior designers for each scope.
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