HDB & Condo Renovation Cost Calculator
- 4-room BTO renovation (typical scope)S$51,000 – S$61,800
Estimated renovation budget
S$51,000 – S$61,800
Add 10–20% contingency for hidden works in older resale flats.
How this works
Base budgets use Qanvast’s 2025 survey of HDB renovation costs (259 BTO and 302 resale projects). Optional items use 2026 per-square-foot and per-foot-run market rates cited in our renovation price guides.
Results are ranges, not quotes. Hidden works (rewiring, replumbing, waterproofing) in older resale flats often add 10–20%.
FAQs
How much does it cost to renovate a 4-room HDB flat?
Qanvast’s 2025 data puts a typical 4-room BTO renovation at about S$51,000–S$61,800 and a 4-room resale renovation at about S$64,300–S$80,300. Resale flats cost more because they usually need hacking, rewiring and replumbing.
Why is resale renovation more expensive than BTO?
Resale flats usually need old finishes hacked and disposed of, ageing wiring and pipes replaced, and more extensive carpentry: work a new BTO flat doesn't need.