Renovation Is Most Homeowners' Biggest Spend After the Flat Itself
There is no flat rate for an HDB renovation. Cost scales with the flat's size, its condition, how much you change, and the level of finishes you choose. But the 2026 market ranges are broad enough to plan around, provided you understand what sits inside the number and what sits outside it.
Indicative full-renovation ranges for 2026 sit at roughly S$36,000 to S$82,000 for a BTO flat, and S$51,000 to S$97,000 for a resale flat. A typical 4-room BTO lands around S$51,000–S$62,000, while a typical 4-room resale lands around S$64,000–S$80,000[reference:44].
Why BTO and Resale Renovations Cost Differently
| Factor | BTO Flat | Resale Flat |
|---|---|---|
| Starting condition | New, bare | Lived-in, dated |
| Hacking and removal | Minimal | Often extensive |
| Rewiring and plumbing | Usually new | May need upgrading |
| Typical timeline | 6–10 weeks | 8–14 weeks |
Resale flats cost more because they usually need more hacking, rewiring and reinstatement of previous owners' modifications[reference:45]. A BTO flat, by contrast, is closer to a blank canvas — but "minimal hacking" does not mean "cheap". Carpentry, tiling and wet works still dominate the budget.
Where the Renovation Budget Actually Goes
- Carpentry — kitchen cabinets, wardrobes and built-in storage. Usually the single largest line item.
- Tiling and flooring — hacking and relaying, or overlay. See our separate guide on vinyl versus tiles for the real cost gap.
- Wet works — waterproofing, masonry and plastering. This is where cutting corners is most dangerous.
- Electrical and plumbing — new points, relocations and rewiring. Regulated work must be done by licensed trades.
- Painting, ceiling and finishing — false ceilings, cove lighting and touch-ups[reference:46].
A lower quote often means fewer items, thinner materials, or work that has been excluded and will be charged later. Compare quotes line by line, not just by the bottom figure.
What Is Reinstatement, and When Do You Need It?
Reinstatement is the process of returning a property to its original condition at the end of a lease. It is common for tenants of private condominiums and for some HDB rental arrangements where the tenant has made modifications with the landlord's consent.
Typical reinstatement works include:
- Removing built-in carpentry and restoring the original walls.
- Patching and repainting walls affected by removed fixtures.
- Replacing altered flooring or restoring the original floor finish.
- Removing additional electrical points or restoring the original layout.
- Clearing all debris and leaving the unit in a clean, handover-ready state.
Reinstatement is priced like a small renovation — it depends on how much was changed. A light reinstatement may cost a few thousand dollars; a full restoration of a heavily modified unit can run into five figures. The key is to document the original condition at the start of the lease so the scope is clear at the end.
How to Keep a Renovation on Budget
- Decide your non-negotiables first. Wet works and electrical safety are not places to save. Carpentry and finishes are where you have more flexibility.
- Get three itemised quotes and compare what is included, not just the total.
- Do not change the scope mid-project. Variations are the most common reason renovations run over budget.
- Plan for a contingency of 10–15% for unexpected issues, especially in resale flats.
- Check licensing for regulated trades. Electrical work requires an EMA-licensed worker; plumbing connected to the public supply requires a PUB-licensed plumber.
Frequently Asked Questions
Do I need a permit to renovate my HDB flat?
Yes, for works that affect structural elements, wet areas or the building's external appearance. Your renovation contractor should handle the permit applications and ensure the works comply with HDB guidelines.
How long does an HDB renovation take?
A BTO renovation typically takes 6–10 weeks. A resale flat with more hacking and rewiring usually takes 8–14 weeks.
Can I renovate in phases to spread the cost?
Yes. Essential wet works and carpentry can be prioritised first, with cosmetic work staged later. Doing everything at once is usually more cost-effective, but phasing is possible if cash flow requires it.
Does renovation cost include furniture and appliances?
No. Loose furniture, appliances and curtains are almost always excluded from a renovation quote. Confirm what is in and out of scope before signing.
Planning a renovation or facing a lease reinstatement? Pro Handyman Service manages renovation and reinstatement works across Singapore. Call +65 9779 7297 for a site consultation and an itemised quote.
