You just collected your BTO keys. The excitement lasts about 48 hours — then the renovation quotes start coming in and suddenly S$60,000 feels very real. One ID quotes you S$45,000. Another says S$78,000. Same flat, same scope. Who do you trust?
This guide cuts through the noise. Here's what a renovation actually costs in Singapore in 2026 — and how to make sure you don't get stung.
Why renovation costs vary so much
No two quotes are the same, even for identical flats. Here is why.
Flat size. A 3-room flat is roughly 65 sqm. A 5-room is 110 sqm. More space means more flooring, more carpentry, more of everything.
BTO vs resale. A new BTO is a blank canvas. A resale flat means hacking existing tiles, rewiring old electrical systems, and waterproofing aged bathrooms. That easily adds 20–40% to the bill.
Materials. Laminate cabinets vs solid timber. Vinyl planks vs homogeneous tiles. Quartz vs granite countertops. Your finish level can swing the total by S$15,000–$20,000 on the same floor plan.
ID firm vs direct contractor. An interior designer manages the whole project, handles permits, and takes accountability. You pay 15–20% more for that. A direct contractor is cheaper — if you're prepared to project-manage it yourself.
Scope of works. Full renovation with carpentry everywhere, or just a kitchen and two bathrooms? Every line item adds up. Knowing your scope before you get quotes is non-negotiable.
What does an HDB renovation actually cost in 2026?
These are realistic ranges based on 2026 Singapore market rates, assuming a moderate Modern or Minimalist finish with a typical scope — kitchen, bathrooms, flooring, and carpentry.
2026 renovation cost ranges — Singapore
3-Room BTO
S$25,000–$45,000
Basic to modern finish
4-Room BTO
S$40,000–$62,000
Most common renovation budget
5-Room BTO
S$45,000–$70,000
Full scope with carpentry
HDB Resale (any size)
+20–40% vs BTO
Hacking, rewiring, waterproofing
Condo (New)
S$40,000–$80,000
Varies by unit size and style
Condo (Resale)
S$80,000–$105,000
Older units need more rework
Landed properties: S$120,000–$300,000+. All figures assume 2026 market rates. Actual costs depend on scope, materials, and contractor.
Where your money actually goes
Most people are shocked when they see how much goes to one line item.
Carpentry & built-ins (25–40% of budget)
This is the big one. Kitchen cabinets, wardrobes, TV console, shoe cabinet — all custom-made to your flat's dimensions. Prices vary wildly between ID firms. Always get itemised, spec-by-spec quotes before comparing.
Wet works — kitchen and bathrooms (15–25%)
Hacking, waterproofing, tiling, plumbing. For resale flats, budget significantly more if pipes need replacing. Wet works is also where most hidden defects surface.
Flooring (8–15%)
Vinyl plank flooring runs S$3–$6 per sqft installed. Homogeneous tiles S$4–$9. Solid timber parquet can hit S$10+ per sqft. The whole-home difference between vinyl and parquet can be S$8,000 or more.
Electrical works (5–10%)
New power points, rewiring, distribution board upgrade. Essential for resale flats — never cut this. Faulty concealed wiring is a safety risk and an insurance liability.
Painting, feature walls, false ceilings (5–15%)
The finishing touches that define the look. Often where you can save without anyone noticing — and equally where a little extra spend makes a big visual difference.
The hidden costs nobody puts in the quote
Your renovation quote covers the renovation. It does not cover everything.
Contingency buffer: 10–20%
For resale flats especially, unexpected issues surface once hacking starts — old pipes, concealed wiring faults, subsurface damage. Budget for it before you need it. Kiasu is the right instinct here.
Furniture and appliances: S$10,000–$30,000
Your ID does not supply your fridge, washing machine, sofa, or dining table. New homeowners consistently underestimate this. Build it into your total budget, not an afterthought.
Temporary accommodation
Renovating a resale flat while waiting for possession? Add S$2,000–$5,000+ for 2–3 months of short-term rental. Many couples crash at parents' place — if you can, it's worth it.
HDB administrative fees
Certain works require HDB approval and come with fees. Your registered contractor handles this — but confirm it is included in the contract and accounted for in the project timeline.
How to read a renovation quote
A good quote is detailed. A bad quote is vague. Here is what to look for.
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Line items must be specific. "Carpentry works" with no breakdown is a red flag. You want: "Kitchen cabinet (bottom), laminate finish, Blum hinges — S$X,XXX." If it isn't specific, you can't compare it or hold anyone to it.
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Materials must be named. Which brand of tiles? What thickness laminate? Which system furniture series? If the quote doesn't specify, the contractor can substitute cheaper materials and you have zero recourse.
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Check the payment schedule. Standard: 10–20% on signing, 20–30% on commencement, progress payments at milestones, 5–10% withheld until defects are rectified. Anyone asking for 50%+ upfront is a risk.
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Insist on a timeline with milestones. No clear start and completion dates in the contract means no legal basis to chase delays. For HDB BTOs, your rental overlap window is tight — enforce this.
Red flags when hiring an ID
Walk away if you see any of these.
Vague line items
"Renovation works: S$45,000" tells you nothing. If they can't quote line by line, they won't manage your project line by line either.
No HDB registration number
Any contractor doing HDB works must be a registered HDB contractor. Check the HDB directory before you sign a single thing.
Pressure to sign fast
"This price is only valid for 48 hours" is a sales tactic, not a business reality. Good firms don't need to rush you.
Quote significantly below market
If everyone else is at S$55,000 and one firm says S$35,000, ask very hard questions. Corners will be cut. Materials will be swapped.
No formal contract
Never proceed without a signed contract detailing scope, materials, timeline, and payment terms. Never.
5 ways to keep costs down without sacrificing quality
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Bundle your wet works
One contractor for both kitchen and bathroom tiling and waterproofing saves 8–12% versus separate trades.
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Overlay instead of hack for flooring
Vinyl planks laid over existing tiles saves S$3,000–$5,000. Only works if the base tiles are level, intact, and free of lippage.
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Choose laminate over solid timber for carpentry
The look is nearly identical in most homes. The price difference is very real.
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Get at least 3 quotes
Carpentry prices can vary 30% between ID firms for identical specifications. The market is your friend — use it.
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Start on weekdays
Many contractors charge weekend surcharges for workers. A weekday start saves 3–5% on labour costs.
Frequently asked questions
Is S$30,000 enough for an HDB renovation?
For a 3-room BTO with a basic scope — kitchen, one bathroom, flooring, painting, no carpentry — S$30,000 is achievable. For a 4-room or 5-room, or anything with full built-in carpentry, it is tight. Most 4-room BTO renovations in 2026 start from S$40,000 for a proper job.
How long does an HDB renovation take?
A typical BTO renovation takes 8–12 weeks from start to handover. Resale flats take 10–16 weeks due to hacking and concealed works. Add 2–4 weeks if you have extensive carpentry or full kitchen and bathroom renovation.
Do I need HDB approval for renovation?
Yes, for certain works. Hacking walls, bathroom and kitchen alterations, and anything affecting the structure or building services require HDB approval. Your registered contractor should handle this — make sure it is included in the contract and project timeline.
Should I hire an ID firm or a direct contractor?
Hire an ID firm if you want a cohesive design, someone to manage the whole project, and a single point of accountability when things go wrong. Hire a direct contractor if you are confident managing trades yourself and want to save 15–20%. For first-time renovators, most find the ID fee worth every dollar.
Not sure where to start?
Try our free Renovation Cost Estimator — no sign-up needed. Then browse verified interior designers and reach out on your own terms. No cold calls, no pressure.