What a BTO Renovation Really Costs in 2026 — and the Line Items a New Flat Can Skip
3-room, 4-room and 5-room renovation ranges for 2026, why a new BTO skips whole trades a resale flat cannot, foot-run rates for carpentry, and the four costs that always arrive late.
Ask five people what a BTO renovation costs and you’ll get five numbers between S$25,000 and S$90,000 — all of them technically true, because nobody says what’s inside the number. The useful question isn’t “how much does renovation cost” but “which of these line items does a brand-new flat actually need?” Get that right and the budget stops being a mystery.
The market ranges, by flat type
For a full contractor scope on a new flat in 2026, the market sits roughly here:
3-roomabout 65 sqmS$25k – S$40kS$0S$20kS$40kS$60kS$80k
4-roomabout 90 sqmS$35k – S$55kS$0S$20kS$40kS$60kS$80k
5-roomabout 110 sqmS$45k – S$70kS$0S$20kS$40kS$60kS$80k
Where in the band you landA light refresh sits at the bottom of each band; full carpentry lands mid-band; hacking, feature ceilings and premium stone push past the top.
A carpentry-only fit-out sits well below these figuresThese are market guides for an all-in contractor scope in mid-2026, not quotes.
Market ranges for a full scope, mid-2026. A carpentry-only fit-out sits well below these figures.
- 3-room (about 65 sqm): S$25,000 – S$40,000
- 4-room (about 90 sqm): S$35,000 – S$55,000
- 5-room (about 110 sqm): S$45,000 – S$70,000
Within each band, a light refresh lands near the bottom, full carpentry sits mid-band, and anything with hacking, feature ceilings and premium stone pushes past the top. Designer-led 4-room projects routinely quote S$60,000–90,000 — not because the flat is different, but because the scope is.
Why a new flat is a different bill
A resale flat arrives with someone else’s decisions baked in: old wiring, tired tiles, a layout that needs opening up. A new BTO arrives blank and compliant. That removes entire trades from your quote — and for the first three years you’re not allowed to hack bathroom wall and floor tiles anyway, because HDB’s waterproofing membrane is under warranty.
| New BTO | Resale flat | |
|---|---|---|
| Hacking and demolition | ✗ Usually not needed | ✓ Budget for it |
| Bathroom wall and floor tiles | ✗ Not allowed for 3 years | ✓ Budget for it |
| Living and bedroom flooring | ○ Optional, scope-dependent | ✓ Budget for it |
| Plastering and painting | ○ Optional, scope-dependent | ✓ Budget for it |
| Electrical rewiring | ✗ Usually not needed | ✓ Budget for it |
| Extra power and data points | ○ Optional, scope-dependent | ○ Optional, scope-dependent |
| Plumbing re-routing | ○ Optional, scope-dependent | ✓ Budget for it |
| Carpentry: kitchen, wardrobe, storage | ✓ Budget for it | ✓ Budget for it |
| Appliances, sink and tap | ✓ Budget for it | ○ Optional, scope-dependent |
| False ceiling and lighting | ○ Optional, scope-dependent | ○ Optional, scope-dependent |
✓ Budget for it ○ Optional, scope-dependent ✗ Usually not needed
In a new flat the bathroom tiles cannot be hacked for the first three yearsGuide only — check the current HDB rules before you plan around them.
Same trade list, two very different bills.
So in a new flat, the money concentrates in three places: carpentry, appliances and fittings, and a handful of electrical additions. Everything else is a choice, not a necessity.
Carpentry is the number that matters
Carpentry is typically the single largest line — commonly around a third of a full renovation budget, and far more than that if you skip the rest. It’s also the line most often quoted as a lump sum, which is exactly how comparison becomes impossible.
Ask for unit rates by the foot-run instead. As a market guide:
- Kitchen cabinets: around S$120–150 per foot
- Wardrobes: around S$300–320 per foot
- Quartz worktop: around S$120–180 per foot installed
With rates, two quotes become comparable in a minute: multiply the run length you actually have, then look at what each includes — board grade, edging, hinges and runners, soft-close, and whether the worktop and sink cut-outs are in or out. A cheap rate with a low-grade core and no soft-close isn’t cheaper; it’s a different product. Our own breakdown of that trick is in Can’t Read Your Renovation Quote?
The costs that arrive late
Most budget overruns in a new flat come from four places, none of them exotic:
- Appliances chosen after the cabinets. Hob, hood, oven and sink dimensions must be fixed before panels are cut. Change them later and you pay for the re-cut.
- Electrical additions. A new flat is wired, but rarely where you want it. Extra points are cheap while the walls are open and expensive afterwards — decide the socket plan alongside the cabinet drawing.
- Exclusions. Hauling, disposal, floor protection, re-measurement, delivery to a high floor. Ask for them in writing before you sign.
- Scope creep in the “free” upgrade. A feature wall here, a false ceiling there. Each is fine; together they’re S$8,000.
Where group buying changes the arithmetic
Carpentry costs what it costs because of cutting, edging, packing and a lorry. Batch twenty flats in the same block with the same layouts and every one of those steps gets cheaper per home — which is the whole idea behind group buying: 10% off at five homes, up to 15% at twenty, on top of factory-direct pricing. On a S$12,000 fit-out that’s S$1,800 for making one WhatsApp group.
A sane way to set your budget
- Start with the carpentry list, room by room, in feet. That is your real base number.
- Add appliances and fittings at model level, not “budget for appliances”.
- Add 10% contingency — not for surprises in the flat, but for the decisions you’ll change.
- Hold the aesthetic extras — feature walls, ceilings, curtains — until the essentials are locked. They’re easy to add later; carpentry isn’t.
Frequently asked questions
Is S$30,000 enough for a 4-room BTO? For a carpentry-led fit-out with appliances and no hacking, yes, comfortably. For a designer scope with feature ceilings and stone everywhere, no.
Why is my quote so much higher than my neighbour’s? Usually scope, not price. Compare foot-run rates and inclusions, not totals.
Can I renovate in stages? Yes — core carpentry first (kitchen, wardrobe, bathroom cabinets), then TV console, shoe cabinet and storage later. Just make sure the electrical plan anticipates the later pieces.
Do I need to re-tile a new flat? No, and in the bathrooms you can’t for three years. Vinyl overlay elsewhere is a want, not a need.
Get your number, not a range
Load your flat’s real layout, build the fit-out online, and see an itemised price before anyone visits.
btogroupreno.sg/ · WhatsApp +65 8852 6257 · Call +65 6222 3668
All figures are market guides as at September 2026, not quotes. Confirm current HDB rules at hdb.gov.sg.
