Extent of hacking (biggest cost driver for resale)
Carpentry length & material
Flooring choice (vinyl vs tiles)
If you’re planning an HDB renovation in 2026, the first question every homeowner asks is price—and rightly so. Renovation costs in Singapore vary widely depending on flat size (3, 4, or 5-room), whether it’s a BTO or resale, the scope of works, and how extensive the carpentry and wet works are.
This guide breaks down realistic 2026 renovation costs, compares BTO vs resale, explains timelines, and helps you budget properly—without nasty surprises.
Before diving into details, here’s a quick overview of typical renovation budgets in 2026:
Flat Type | BTO Renovation Cost | Resale Renovation Cost |
|---|---|---|
3-Room HDB | $18,000 – $35,000 | $35,000 – $60,000 |
4-Room HDB | $25,000 – $45,000 | $45,000 – $80,000 |
5-Room HDB | $30,000 – $60,000 | $55,000 – $100,000+ |
These figures reflect mid-market, full-home renovation scopes, not ultra-basic refreshes or luxury designer builds.
BTO 3-Room Renovation Cost
Estimated range: $18,000 – $35,000
BTO flats are delivered in a near-bare condition, so there’s no hacking cost, which keeps budgets lower.
Typical scope includes:
Ideal for: Young couples, singles, or investors seeking cost-efficient layouts.
Resale 3-Room Renovation Cost
Estimated range: $35,000 – $60,000
Cost rises when toilets and kitchen need full rebuilds.
BTO 4-Room Renovation Cost
Estimated range: $25,000 – $45,000
This is the most popular HDB flat size in Singapore.
Common works:
Tip: Many homeowners overspend on carpentry—prioritise storage where it’s actually needed.
Resale 4-Room Renovation Cost
Estimated range: $45,000 – $80,000
Resale 4-room flats usually involve:
Costs can cross $70K+ if you opt for:
BTO 5-Room Renovation Cost
Estimated range: $30,000 – $60,000
Larger space = higher material and carpentry costs.
Typical scope:
Best practice: Stage your renovation—do essentials first, add features later.
Resale 5-Room Renovation Cost
Estimated range: $55,000 – $100,000+
Resale 5-room flats often undergo full-scale transformations, including:
This is where budgets can spiral quickly if not controlled.
Average timeline: 6–8 weeks
Phase | Duration |
|---|---|
Design & approvals | 2–3 weeks |
Carpentry fabrication (off-site) | 3–4 weeks |
On-site works & installation | 2–3 weeks |
Why BTO is faster?
No hacking, cleaner site, predictable conditions.
Average timeline: 8–12 weeks
Phase | Duration |
|---|---|
Site inspection & design | 2–3 weeks |
Hacking & wet work | 2–3 weeks |
Electrical & plumbing | 1–2 weeks |
Carpentry & finishing | 3–4 weeks |
Older flats or poor existing conditions can extend timelines.
Extent of hacking (biggest cost driver for resale)
Carpentry length & material
Flooring choice (vinyl vs tiles)
Number of bathrooms rebuilt
Electrical upgrades
Design complexity
Separate essential works from “nice-to-have”
Ask for itemised quotations
Avoid over-custom carpentry early
Keep 10–15% buffer for surprises
Compare at least 3 renovation quotes
Get 3–5 renovation quotations from trusted HDB renovation specialists and compare real prices, timelines, and scope—before committing.
Yes. Labour and material costs have increased by roughly 5–10%, especially for carpentry and tiling works.
Yes—for 3-room and some 4-room BTO flats, if you keep carpentry and feature works minimal.
Hacking, debris disposal, plumbing replacement, and rewiring significantly increase cost.
Usually 1–2 weeks after completion for cleaning, airing, and final touch-ups.
Yes. Vinyl typically costs 30–40% less than tiles and installs faster.
For budget control, many homeowners renovate essentials first and upgrade later—especially for 5-room flats.
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