A renovation in Singapore is a budgeting exercise first and a design exercise second, because the number that sinks new homeowners is almost never the wallpaper, it is the gap between what they quoted and what they actually paid. In 2026 a mid-range four-room HDB fit-out runs roughly S$43,000 to S$67,000, a resale flat sits 20% to 40% higher than the same job in a BTO, and carpentry alone swallows a quarter to a third of the whole bill. This guide builds the plan in the order that protects your cash: how much your flat type really costs this year, where every dollar goes, how to finance the gap without overpaying, how the deposit schedule keeps you from getting burned, and the 15% buffer that turns a stressful project into a boring one.
Cost tracks two things: how big the place is and how much built-in carpentry you commission. It does not track how good your mood board looks. The single biggest swing in 2026 is whether you bought a BTO or a resale flat, because a resale unit needs hacking, rewiring and fresh waterproofing before the fun parts even start, and that groundwork adds S$15,000 to S$25,000 on a four-room before you have chosen a single tile.
The table below is the realistic mid-range spend for 2026, drawn from current contractor and interior-designer quotes across Singapore. Treat these as planning ranges, not fixed prices, since your final number depends on material grade and how much joinery you order. To pressure-test a specific layout against your own savings, run the figures through the renovation cost calculator before you sign anything.
One trap to name early: do not anchor on the cheapest quote. A lump-sum quotation with no line items is the classic way a low headline price balloons into variation orders mid-project. Insist on itemised quotes from every firm you compare.
| Home type | BTO / new | Resale / older | What moves the number |
|---|---|---|---|
| 3-room HDB | ~S$33,000-S$51,000 | ~S$43,000-S$67,000 | Hacking, rewiring on resale |
| 4-room HDB | ~S$43,000-S$67,000 | ~S$56,000-S$80,000 | Carpentry volume, wet works |
| 5-room HDB | ~S$50,000-S$80,000 | ~S$64,000-S$93,000 | Floor area, kitchen + 2 baths |
| 2-3 bed condo | ~S$30,000-S$70,000 | ~S$48,000-S$84,000 | MCST rules, ceiling height |
| Terrace (landed) | S$80,000-S$150,000 | S$150,000-S$200,000+ | Structural and A&A works |
Knowing the total is useless if you cannot see which trade is eating it. Once you can read a quote by category, you know exactly where to trim without compromising the parts you must never cheap out on. Carpentry is the lever almost everyone underestimates: every metre of built-in wardrobe, kitchen cabinet and TV console adds up, and a flat with floor-to-ceiling storage in every room can cost double one furnished with freestanding pieces.
The split below is a typical allocation for an HDB job. Wet works and the things behind your walls deserve a separate warning: electrical, plumbing, and waterproofing are the worst possible place to save money, because redoing them later means hacking open finished walls. Spend properly there and trim on carpentry volume and material grade instead.
| Trade | Share of budget | Notes |
|---|---|---|
| Carpentry / built-ins | 25%-40% | Biggest lever; cut volume, not quality |
| Masonry / tiling / flooring | 15%-25% | Wet areas cost most per sqft |
| Electrical | 8%-15% | Extra power points ~S$80-S$120 each |
| Plumbing | 5%-10% | Never cheap out behind walls |
| Hacking / demolition | 5%-10% | Resale only, BTO rarely needs it |
| Painting | 5%-8% | Easy DIY saving if you have time |
| False ceiling / lighting | 5%-10% | Cove lighting is a want, not a need |
| Waterproofing | 3%-5% | The cheapest insurance you will buy |
Most people cannot pay a full renovation in cash, so the real question is how to fund the gap at the lowest true cost. A renovation loan is ring-fenced credit paid straight to your contractor, hard-capped at six times your monthly income or S$30,000, whichever is lower. That cap is set by the banks, not by you, so a S$60,000 four-room job already needs a second source on top.
The number to compare is never the advertised flat rate, it is the effective interest rate (EIR), because reno loans charge interest on the full original principal for the whole tenure even as you pay it down. Add the upfront processing, handling and insurance fees of roughly 1% to 3% and the EIR often lands near double the headline. For the full lender-by-lender rate table and the fee breakdown, see our dedicated renovation loan rates guide; the comparison below is the planning view.
In 2026 the cheaper option is often not a reno loan at all. Several personal and instant loans advertise EIRs from under 2%, they can also pay for furniture and appliances a reno loan rejects, and they fund you directly. If your works are simple and your credit is strong, weigh a personal bank loan against the reno loan on EIR including every fee before you decide. CPF cannot pay for renovation, so do not count on it.
| Option | Spend on | Cap | True cost (EIR) | Best when |
|---|---|---|---|---|
| Renovation loan | Fixed works only, paid to contractor | 6x salary or S$30,000 | ~5% to 6.6% incl. fees | Large fixed works, lender discount |
| Personal / instant loan | Anything incl. furniture | Income-based, often higher | From under 2% to 8% | Simple works, strong credit, flexibility |
| Cash / savings | Anything | Your buffer | 0%, but lost liquidity | Modest job, keep emergency fund intact |
| CPF | Not allowed for renovation | N/A | N/A | Never; CPF cannot fund renovation |
How you pay matters as much as how much you pay. A common and reasonable Singapore structure releases money in stages tied to work completed, never the full sum upfront. A typical schedule is around 10% on signing, then progress draws as hacking, carpentry and finishing each finish, with the final 5% to 10% held back until you have inspected and signed off the completed job. The retained final payment is your only real bargaining chip if there is a defect, so never waive it.
Pay through traceable transfers, keep every signed variation order in writing, and be wary of any contractor demanding most of the money before work starts. To lower the risk further, pick a CaseTrust-accredited renovation firm: the scheme requires deposit protection and a standard contract, which matters because a renovation deposit is unsecured money sitting with a third party. Walk your milestones and inspection points alongside a renovation checklist so nothing gets paid for before it is actually done.
HDB rules decide what you can do, when you can do it, and who can do it, and breaking them costs money. Any renovation that touches the structure or fixed fittings needs an HDB permit, and the work must be carried out by an HDB-registered renovation contractor, not a random handyman. Use an unregistered party for permitted works and you carry the liability if something fails.
Two rules catch new flat owners by surprise. Newly completed flats carry a three-year restriction, counted from the issuance of the Temporary Occupation Permit, on removing the wall and floor finishes in bathrooms and toilets, though you may lay new finishes over the existing ones using adhesive within HDB's guidelines. And renovations in a newly completed block must finish within three months of the permit date, so a slow contractor can put you in breach.
Working hours are fixed by HDB and ignoring them earns complaints and stop-work grief. General renovation runs 9am to 6pm on weekdays and Saturdays; noisy works such as demolition, hacking, tile-cutting and heavy drilling are 9am to 5pm on weekdays only; no renovation is allowed on Sundays or public holidays. If you are still choosing between buying new or resale, the BTO vs resale comparison sizes up the renovation cost gap as part of the total.
A renovation budget that survives contact with reality is built backwards from your cash position, not forwards from a wishlist. Start with what you can fund without emptying your emergency buffer, then size the works to fit, not the other way round. The biggest avoidable cost is borrowing the full S$30,000 reno loan simply because it was approved; interest on money you did not need is pure loss.
The buffer is non-negotiable. Set aside 10% to 15% on a BTO and lean to 15% on resale or any older unit, because the expensive surprises are almost always hidden infrastructure: outdated wiring, failed waterproofing, hollow tiles, uneven floors. Plan the whole project against your monthly budget so the instalment plus your mortgage still leaves room to live. The steps below keep the plan honest.
For an HDB flat, plan around S$30,000 to S$90,000 depending on size and scope, with a mid-range four-room BTO near S$43,000 to S$67,000 and a resale flat 20% to 40% higher. Add a 10% to 15% contingency on top, leaning to 15% for resale or older units where hidden infrastructure surprises are common.
No. CPF savings cannot be used to pay for home renovation in Singapore. You can use cash, a renovation loan capped at six times your monthly income or S$30,000, or a personal loan. Compare any loan on its effective interest rate including upfront fees, not the advertised flat rate.
Works that affect the structure or fixed fittings, such as hacking, demolition, altering walls, and many electrical and plumbing changes, need an HDB permit and must be done by an HDB-registered renovation contractor. Newly completed flats also face a three-year restriction from TOP on removing bathroom and toilet wall and floor finishes.
Pay in stages tied to completed work, never the full amount upfront. A common structure is about 10% on signing with progress draws as each phase finishes, and a final 5% to 10% held back until you have inspected and accepted the job. Use traceable transfers and prefer a CaseTrust-accredited firm for deposit protection.
This is general financial information for Singapore, not personal financial advice. Figures change — verify current rates against the official sources above before acting. See our full disclaimer.