BTO vs Resale HDB Renovation: Complete Cost Comparison 2026
Side-by-side breakdown of costs, timelines, permits, and hidden expenses. Totals are based on Qanvast 2026 projections and MoneySmart 2026 — use them to sanity-check quotes.
Is it cheaper to renovate a BTO or a resale HDB flat?
Usually a BTO: Qanvast's 2026 projections put a 4-room BTO renovation at about $50,000–$60,000 versus about $70,000–$81,600 for a 4-room resale flat, because resale flats often need hacking, waterproofing and rewiring first (Qanvast, third-party). Either way, use an HDB-registered (DRC) contractor, get permits where needed, and pay in cash, since CPF cannot be used for renovation (CPF Board).
Based on Qanvast 2026 projections (2025 project data) and MoneySmart 2026; actual quotes vary.
By the ContractorSG editorial team · Last reviewed: · ContractorSG editorial team · Sources
In This Guide
How do BTO and resale renovation costs compare in 2026?
Ranges are typical full-renovation totals from Qanvast’s Feb 2026 projections (2025 medians across 341 BTO and 449 resale projects), corroborated by MoneySmart 2026. They are third-party figures, not official data or quotes. Line items below are an indicative split of those totals. Always compare itemised quotes.
| Flat type | BTO | Resale |
|---|---|---|
| 3-room | $40,800–$52,500 | $55,000–$68,300 |
| 4-room | $50,000–$60,000 | $70,000–$81,600 |
| 5-room | $60,600–$76,500 | $80,800–$98,900 |
Based on Qanvast 2026 projections (2025 project data) and MoneySmart 2026; actual quotes vary.
3-Room HDB Flat (~65 sqm)
| Category | BTO Cost | Resale Cost | Difference |
|---|---|---|---|
| Hacking & Disposal | $0 | $2,400–$2,600 | +$2,400–$2,600 |
| Masonry & Plastering | $500–$600 | $2,300–$2,600 | +$1,800–$2,000 |
| Waterproofing | $0 | $1,200–$1,300 | +$1,200–$1,300 |
| Electrical (incl. rewiring for resale) | $1,900–$2,400 | $3,700–$4,400 | +$1,800–$2,000 |
| Plumbing | $1,000–$1,300 | $2,100–$2,500 | +$1,100–$1,200 |
| Flooring | $2,800–$3,600 | $4,700–$5,800 | +$1,900–$2,200 |
| Carpentry & Built-ins | $15,800–$20,200 | $15,800–$20,200 | Same |
| Kitchen | $10,200–$13,200 | $12,100–$15,400 | +$1,900–$2,200 |
| Bathroom(s) | $6,500–$8,400 | $8,100–$10,200 | +$1,600–$1,800 |
| Painting | $2,100–$2,800 | $2,600–$3,300 | +$500 |
| TOTAL (Qanvast 2026) | $40,800–$52,500 | $55,000–$68,300 | +$14,200–$15,800 |
4-Room HDB Flat (~90 sqm) — Most Popular
| Category | BTO Cost | Resale Cost |
|---|---|---|
| Hacking & Disposal | $0 | $4,600–$5,000 |
| Masonry, Waterproofing & Plumbing | $2,200–$2,700 | $7,500–$8,300 |
| Electrical (incl. rewiring for resale) | $2,500–$3,000 | $5,100–$5,800 |
| Flooring | $4,000–$4,800 | $7,100–$8,200 |
| Carpentry & Built-ins | $23,400–$28,000 | $23,400–$28,000 |
| Kitchen & Bathrooms | $15,200–$18,300 | $19,000–$22,400 |
| Painting & Finishing | $2,700–$3,200 | $3,300–$3,900 |
| TOTAL (Qanvast 2026) | $50,000–$60,000 | $70,000–$81,600 |
5-Room HDB Flat (~110 sqm)
BTO Renovation
$60,600–$76,500
Qanvast 2026 projection
Resale Renovation
$80,800–$98,900
Qanvast 2026 projection
Line items are an indicative split of the published totals (resale = BTO work + resale-only work), scaled so each column adds up to the total. They are not quotes.
Based on Qanvast 2026 projections (2025 project data) and MoneySmart 2026; actual quotes vary.
What does a BTO come with, and what do I still need?
What HDB Provides in a New BTO
- Floor tiles in all rooms (standard grade)
- Wall tiles in kitchen and bathroom
- Toilet bowl, wash basin, and shower set
- Kitchen sink and tap
- Main door and bedroom doors
- Electrical wiring and power points
- Ceiling lights in all rooms
- Waterproofing in wet areas (get the warranty in writing)
Typical BTO Renovation Scope (4-room, indicative)
Carpentry & Built-ins ($23,400–$28,000)
Wardrobe, shoe cabinet, TV console, kitchen cabinets. This is typically the largest expense for BTO owners.
Flooring / Overlay ($4,000–$4,800)
Optional. Many BTO owners keep HDB tiles or overlay with vinyl/laminate to avoid the cost of hacking. Vinyl overlay: $3–$7/sqft.
Electrical Additions ($2,500–$3,000)
Add power points, install lighting fixtures, set up aircon trunking. BTO wiring is modern, so you only add what you need.
Painting ($2,700–$3,200)
BTO walls come with a base coat. Most owners do a fresh paint job for colour choice. Feature walls add $200–$500 each.
What usually needs replacing in a resale flat?
Why Resale Renovation Costs More
Resale flats need demolition before construction. You are essentially undoing the previous owner's renovation before starting your own. This "undo and redo" cycle is the biggest cost driver.
+$4,600–$5,000
Hacking & Disposal
Remove old tiles, walls, fixtures
+$5,300–$5,600
Masonry, Waterproofing & Plumbing
Needed when toilet finishes are hacked and replaced
+$2,600–$2,800
Electrical Rewiring
Often needed in older flats — have an LEW assess
Extra cost over a 4-room BTO, from the indicative split of the Qanvast 2026 totals.
Resale Renovation Checklist by Flat Age
5–10 Years Old: Light Renovation
Infrastructure is still mostly fine. Focus on cosmetic updates: painting, new carpentry, kitchen refresh. Budget: well below a full renovation.
10–20 Years Old: Moderate Renovation
Replace bathroom fittings, update electrical to modern MCB panel, refresh waterproofing. Concealed pipes may need inspection. Budget: Standard resale costs.
20–30+ Years Old: Full Overhaul
Rewiring and pipe replacement are often needed — have a Licensed Electrical Worker and plumber assess. Ask your contractor whether older materials need testing before hacking. Budget towards the top of the resale range.
Timeline Comparison
BTO Timeline: 4–8 Weeks
Permit + Protection
HDB permit, floor/corridor protection
Electrical & Plumbing
Additional points, aircon piping
Flooring & Wet Works
Overlay flooring, tiling if needed
Carpentry
Built-in wardrobes, kitchen cabinets, shoe cabinet
Painting & Cleanup
Paint, fixtures installation, final cleaning
Resale Timeline: 8–14 Weeks
Hacking & Demolition
Remove old tiles, fixtures, walls. Disposal.
Masonry & Waterproofing
Replaster walls, waterproof bathrooms (needs curing time)
Electrical & Plumbing
Rewiring, new pipes, DB box upgrade
Tiling & Flooring
New floor/wall tiles throughout
Carpentry & Kitchen
Built-ins, countertops, cabinets
Painting, Fixtures & Cleanup
Paint, install fittings, deep clean
Which HDB permits and rules apply?
Important: Check Which Works Need an HDB Permit
- Who applies? You, the owner, are responsible for obtaining permits. You can authorise your contractor — who must be in HDB's Directory of Renovation Contractors — to apply online for you (MyNiceHome/HDB).
- What needs a permit? For example hacking or building walls, removing and replacing floor finishes, raising floor levels in wet areas, and changing toilet finishes. New BTO flats must wait 3 years before removing toilet wall or floor finishes.
- Apply before work starts and check permit details with HDB's "Check Renovation Permit" e-service. Make sure your contractor is in the DRC (see our verification guide).
- Renovation hours: general works Mon–Sat 9am–6pm; noisy works (hacking, removing finishes) Mon–Fri 9am–5pm only. No works on Sundays and public holidays; no noisy works on Saturdays or the eve of major public holidays (MyNiceHome/HDB).
Generally Not Allowed
- Hacking structural columns, beams or reinforced-concrete walls
- Altering the building's external facade
- Extending the flat beyond its boundary
Needs an HDB Permit (examples)
- Hacking down or building non-structural walls
- Removing and replacing floor finishes
- Changing toilet wall/floor finishes (after the 3-year period for new flats)
- Changing the location of doors within the flat
- Replacing a main door that faces a staircase or lift lobby (must be fire-rated)
Money-Saving Tips
BTO Savings Tips
- Keep HDB tiles: Save $3,000–$6,000 by keeping default tiles and using rugs or vinyl overlay instead.
- Skip feature walls: Paint is cheap. Fancy feature walls add $500–$2,000 for a purely cosmetic upgrade.
- Buy-your-own fixtures: Sourcing lights, taps and accessories yourself can cost less than contractor supply — agree with your contractor first who installs and warranties them.
- Freestanding furniture: IKEA wardrobes cost $300–$800 vs $2,000–$5,000 for built-in. Easier to replace too.
Resale Savings Tips
- Selective hacking: Only hack what needs replacing. Keeping good-condition tiles saves $2,000–$5,000.
- Overlay instead of hack: Vinyl/laminate overlay on existing tiles is usually much cheaper than hacking and re-tiling, and avoids disposal costs.
- Partial rewiring: If a Licensed Electrical Worker confirms the existing wiring is sound, adding points may be enough instead of a full rewire.
- Get 3+ quotes: Prices can vary a lot between contractors. Use ContractorSG to compare.
Frequently Asked Questions
Can I use CPF to pay for HDB renovation?
No. CPF Board says renovation costs must be paid in cash, so CPF savings cannot be used for renovation. Banks offer renovation loans; MoneySmart notes most bank renovation loans are capped at $30,000 (check current terms with the bank).
Is it cheaper to renovate a BTO or resale HDB flat in Singapore?
Usually a BTO. Qanvast's 2026 projections (based on 2025 project data) put a 4-room BTO renovation at about $50,000-$60,000 versus $70,000-$81,600 for a 4-room resale flat, because resale flats often need hacking, re-tiling, waterproofing and rewiring first. Based on Qanvast 2026 projections (2025 project data) and MoneySmart 2026; actual quotes vary.
What renovation work does a resale HDB flat usually need?
It depends on the flat's age and condition. Common items are replacing worn floor and toilet finishes (which needs an HDB permit and new waterproofing), checking or upgrading old electrical wiring and the distribution board (work must be done by a Licensed Electrical Worker), and fixing ageing plumbing. Ask a contractor to inspect before you budget.
How long does BTO vs resale HDB renovation take?
HDB asks that renovation be completed within 3 months of approval for new flats and within 1 month for existing flats. As a ContractorSG estimate, a typical BTO job takes about 4-8 weeks and a resale job 8-14 weeks, because of extra hacking, masonry and waterproofing.
Do I need a renovation permit for BTO and resale HDB flats?
Many works need an HDB permit, for example hacking or building walls, replacing floor finishes, and changing toilet finishes. As the owner you are responsible for getting the permits; your contractor (who must be in HDB's Directory of Renovation Contractors) can apply online on your behalf. New BTO flats have a 3-year wait before toilet wall or floor finishes can be removed.
What are the hidden costs of resale HDB renovation?
For a 4-room flat, resale renovation runs about $20,000-$21,600 more than BTO on the published 2026 totals. In our indicative split of that difference, the main extras are hacking and disposal ($4,600-$5,000), masonry, waterproofing and plumbing ($5,300-$5,600) and electrical rewiring ($2,600-$2,800). Budget separately for temporary accommodation if you cannot live in the flat during works. Based on Qanvast 2026 projections (2025 project data) and MoneySmart 2026; actual quotes vary.
Should I renovate my BTO or keep it as-is?
You can move into a BTO with light works (lighting, curtains, furniture) and renovate more later. Remember that new BTO flats have a 3-year wait before toilet wall and floor finishes can be removed, so overlaying is the usual option early on.
Ready to Get Renovation Quotes?
Browse renovation contractors listed on ContractorSG and get multiple quotes for your BTO or resale renovation.
Related Guides
Sources
Rules and figures in this guide are checked against these sources. Prices marked as estimates are ContractorSG editorial estimates, not official figures — always get written quotes.
- How to Renovate Your HDB Flat (updated 24 Jun 2026) — MyNiceHome (HDB)Owner must obtain HDB renovation permits; contractor must be in HDB’s DRC and may apply on your behalf. General works Mon–Sat 9am–6pm; noisy works Mon–Fri 9am–5pm only (not weekends, public holidays or eves of major public holidays). Renovation to be completed within 3 months (new flats) or 1 month (existing flats) of approval. 3-year wait before removing toilet wall/floor finishes in new BTO flats.Checked 13 Oct 2026
- Important Information on Renovations — Housing & Development Board (HDB)Engage only DRC contractors. General works 9am–6pm Mon–Sat; noisy works (hacking, removing finishes, tile cutting, heavy drilling) 9am–5pm Mon–Fri only, not on public holidays or the eves of New Year’s Day, CNY, Deepavali, Hari Raya Puasa and Christmas. Works must finish within 3 months (new blocks) or 1 month (existing blocks) of the permit; window-only works within 2 weeks. Disallowed: overloading the floor slab beyond 150kg per m². Owner and contractor must do a water test after replacing bathroom floor finishes.Checked 13 Oct 2026
- Renovation Guidelines for Building Works — Housing & Development Board (HDB)Newly built flats have a 3-year restriction on removing bathroom/toilet wall and floor finishes. Replacing floor tiles needs a permit; bathroom waterproofing membrane must be upturned at least 150mm against walls, kerbs and pipes; floor finishes + screed max 50mm. Painting, vinyl/carpet, false ceilings and 63mm hollow-block or gypsum partitions need no permit (guidelines still apply). Wall demolition needs approval; a PE must supervise demolition of non-load-bearing RC elements.Checked 13 Oct 2026
- Rectification of Defects in New Flats — Housing & Development Board (HDB)New flats have a 1-year Defects Liability Period (DLP); report items online or at the Building Service Centre. After the DLP, owners engage their own repair contractor.Checked 13 Oct 2026
- Directory of Renovation Contractors (dataset) — HDB via data.gov.sgOfficial list of HDB-registered renovation contractors with registration numbers (format e.g. HB-01-0014E) and status.Checked 13 Oct 2026
- CaseTrust Accreditation for Renovation Businesses — CASE / CaseTrustAccredited renovation businesses: initial deposit capped at 20% of total cost, deposit performance bond, standard contract, 12-month workmanship warranty.Checked 13 Oct 2026
- What are the Expected Renovation Costs for HDB Flats in 2026? (12 Feb 2026) — Qanvast (third-party, not official)Projected from 2025 medians across 341 BTO and 449 resale projects on Qanvast: BTO 3-room $40,800–$52,500, 4-room $50,000–$60,000, 5-room $60,600–$76,500; resale 3-room $55,000–$68,300, 4-room $70,000–$81,600, 5-room $80,800–$98,900.Checked 13 Oct 2026
- 3, 4 & 5 Room HDB Renovation Cost Guide Singapore 2026 (updated 12 Jun 2026) — MoneySmart (third-party, not official)Estimated ranges: BTO 3-room $36,100–$57,000, 4-room $51,000–$70,000, 5-room $62,000–$82,400; resale 3-room $40,000–$90,000, 4-room $55,000–$85,000, 5-room $70,000–$100,000+. Says most bank renovation loans are capped at $30,000.Checked 13 Oct 2026
- Home buying guide for members below 55 — CPF BoardRenovation costs must be paid in cash — CPF savings cannot be used for renovation.Checked 13 Oct 2026
Renovation totals are based on Qanvast 2026 projections (2025 project data) and MoneySmart 2026; line items and smaller costs are indicative, not quotes. Get actual quotes from listed contractors for your specific flat.