Singapore renovation costs & rules
Plan your renovation budget with real ranges.
Transparent, clearly-illustrative cost ranges by flat type and room, plus the official HDB and BCA rules \u2014 so you can budget with no surprises and no sales pitch.
- 4-room BTO flatfull renovationS$50,000\u2013S$60,000
- 4-room resale flatfull renovationS$70,000\u2013S$81,600
- Kitchen (3-/4-room)works + appliancesS$11,500\u2013S$28,000
Illustrative ranges compiled from Qanvast's 2026 HDB renovation cost estimates \u2014 not quotes. See how each is built in the cost guide.
Why Reno Cost SG
Ranges you can trace
Every cost range is illustrative, compiled from published industry data, with the source and date shown.
Official rules, dated
Permits, hacking limits and hours come straight from HDB, BCA and EMA \u2014 with the primary source linked.
No sales pitch
We don't promise a fixed price or push a firm. We explain the numbers so you can judge your own quotes.
Wherever you are in the journey
From first budget to final handover
Working out your budget?
See clearly-illustrative cost ranges by flat type and room before you talk to a single firm.
HDB cost guide →
Not sure what needs a permit?
Which works need HDB approval, what can never be hacked, and the permitted hours.
Permit guide →
Interior designer or contractor?
The cost-versus-coordination trade-off, and how to vet a firm before you pay a deposit.
ID vs contractor →Start with the numbers
Renovation cost ranges
Cost by flat type
BTO and resale ranges for 3-, 4- and 5-room flats, built up item by item.
Open → S$50k–S$60k illustrative full reno4-room BTO breakdown
Where a mid-range 4-room BTO budget actually goes, line by line.
Open → S$70k–S$82k 4-room, illustrativeResale flat renovation
Why resale costs more — rewiring, hacking and spalling repair.
Open → S$11.5k–S$28k works + appliancesKitchen renovation
Cabinetry, worktop and appliances — what drives the price.
Open →All figures are illustrative ranges compiled from published industry sources, not quotes. Your own quotation will depend on your flat, scope and finishes.
Explore by topic
Costs, rules, firms & guides
Renovation costs
Transparent, clearly-illustrative ranges by flat type and by room.
Open →HDB & BCA rules
Permits, hacking limits and permitted hours — straight from the official source.
Open →Choosing a firm
Interior designer vs contractor, DRC and CaseTrust checks, deposit protection.
Open →Guides & tools
Budgeting, renovation loans, timelines and the first-time roadmap.
Open →Renovation budget calculator
Based on How we research & source ranges. As of October 2026. An interactive budget tool is on the way: pick your flat type and scope (light / mid / full) and see an illustrative total and breakdown, built from the same sourced ranges used across the site.
How we research
Illustrative ranges, official rules
Renovation rules come from HDB, BCA, EMA and CASE, each with the date we checked it. Cost figures are illustrative ranges compiled from published industry data \u2014 clearly labelled, never presented as a quote.
- Rules from HDB / BCA / EMA / CASE, dated
- Cost ranges labelled illustrative, source named
- No fixed-price promises or fake reviews
- Corrections welcome at the contact address
General information only. Cost ranges are illustrative, compiled from published industry sources and labelled as such \u2014 they are not quotes. Renovation rules come from HDB, BCA and other official bodies; always confirm the current rule and your own quotation before you commit.