LayeredHow to Plan a Renovation Budget in Singapore, Step by Step
A renovation budget works best when it is built from the top down and checked from the bottom up. Here are six steps, from setting a ceiling to testing it against real quotes.
Most renovation overruns start before the first quote: the renovation budget was a single number with no structure behind it. A budget that survives contact with real quotes has three parts: a ceiling you will not cross, a split by category, and a buffer for surprises. This guide walks through six steps for an HDB or condo.
Cost ranges mentioned are the 2026 ranges Singapore contractors and cost guides publish. Use them to sense-check, and rely on written quotes for your own home.
Step 1: Set the ceiling first
Decide the most you can spend before you look at designs. Work back from your cash, any renovation loan and your monthly comfort level, not from what a showflat looks like. Our guide to how a renovation loan works shows how financing changes the monthly picture.
Step 2: Get a reality check on the range
Compare your ceiling with typical ranges for your home. A new 4-room BTO is commonly quoted around S$40,000 to S$55,000 on a standard specification, and a resale flat costs more because of hacking and replacement work. The renovation cost calculator gives a quick range, and the itemised estimator breaks it into line items.
Step 3: Split the renovation budget by category
Carpentry is usually the largest single block, often around a third of a typical renovation, followed by flooring, then kitchen and bathrooms. A rough starting split helps you spot a quote that is out of line:
| Category | Typical share |
|---|---|
| Carpentry and built-ins | About a third |
| Flooring and tiling | 10% to 15% |
| Kitchen and bathrooms (wet works) | 15% to 20% |
| Electrical and plumbing | 10% to 12% |
| Painting, doors, ceilings, lighting | 10% to 15% |
These shares are guides, not rules. A flat with little carpentry will shift the split.
Step 4: Keep a buffer
Hold back 10% to 15% for changes and surprises. Resale flats tend to need more, because problems appear once old finishes come off. Our guide to resale HDB hidden costs explains where the surprises come from. Treat the buffer as spent only when a change is agreed in writing.
Step 5: List what is outside the renovation
Furniture, appliances, curtains, moving and cleaning often sit outside the contract. Add them as separate lines so the renovation budget is not quietly raided later.
Step 6: Test the budget against quotes
Ask two or three firms to quote on the same brief, then compare line by line using our guide to reading a renovation quotation. If every quote is above your budget, cut scope rather than quality, for example fewer built-ins or an overlay instead of new tiles. If one quote is far below the rest, ask what is missing.
A simple budget checklist
- [ ] Ceiling set from cash and loan, not from designs
- [ ] Range checked against the calculator
- [ ] Budget split by category
- [ ] 10% to 15% buffer held back
- [ ] Furniture, appliances and moving listed separately
- [ ] Two or three itemised quotes compared
Start with the renovation checklist to keep every stage on track.
Frequently asked questions
How much should I budget for a renovation in Singapore?
It depends on home type and condition. Published 2026 ranges run from about S$30,000 for a small BTO to well above S$100,000 for a large or high-specification home. Use the calculator for a range that fits your flat.
Should I include furniture in the renovation budget?
Keep it as a separate line. Furniture is usually outside the contractor's contract, and mixing it in hides how much the building works really cost.
What if my quotes are above my budget?
Reduce scope before reducing quality: fewer built-ins, simpler ceilings or an overlay instead of new floor tiles. Then ask the same firms to requote on the revised brief.
When should I set the budget?
Before you meet designers. A clear ceiling gets you realistic proposals from the first meeting.
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