Is It Worth Renovating Your Resale Flat? Here’s What You Need to Know
- adele.tct
- 7 days ago
- 2 min read

Buying a resale flat can be exciting — you get a bigger space, an established neighbourhood, and sometimes even a great view. But with that also comes the big question:Is it worth renovating a resale unit? Or is it better to buy new?
Let’s break it down — from cost to practicality — so you can make an informed decision.
🧱 1. Resale Flats: Bigger Space, More Possibilities
Older HDB flats are known for:
Larger layouts
More flexible hacking options
Separate kitchen/dining/living zones
But… they often come with old tiles, outdated plumbing, and worn-out fittings that need serious attention.
💰 2. Renovation Cost: Resale vs BTO
Renovating a resale flat typically costs 30–50% more than a BTO unit.
Why?
Dismantling and hacking old materials
Rewiring outdated electricals
Re-tiling toilets due to water leakage risk
Potential waterproofing issues
Estimated renovation cost (Singapore example):
Flat Type | BTO | Resale |
3-room | $20K–$30K | $30K–$45K |
4-room | $25K–$35K | $40K–$60K |
5-room | $30K–$40K | $50K–$70K+ |
(Prices vary depending on design, materials, and scope)
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🔌 3. Common Issues We See in Resale Flats
Wiring: Old wires may not support modern appliances.
Waterproofing: Leaks from upstairs neighbours or poor previous work.
Toilet layout: Some need hacking to meet today’s usage or aesthetics.
Uneven walls/floors: May require plastering or screeding.
Hidden defects: Mold, termite-damaged carpentry, loose floor tiles.
🛠️ 4. Pros of Renovating Resale Units
✅ You can rebuild everything to your taste
✅ Often allows more creative layout changes
✅ Move in faster than waiting for a BTO
✅ Potential for capital appreciation if well-renovated
⚠️ 5. What to Watch Out For
Check with HDB on what can or cannot be hacked
Engage a contractor who understands older structures
Factor in additional time for permits, approvals, and repairs
🧑🔧 Our Advice as a Design + Build Contractor
Renovating a resale flat can be 100% worth it — if:
You love the location
You need a larger layout
You’re prepared for a slightly higher budget and longer timeline
With the right contractor and planning, your old flat can feel brand new.
At How 2 Design 4U, we’ve transformed countless resale homes with:
Full rewiring & waterproofing
Custom carpentry made in our own factory
Safe E0 boards & formaldehyde removal service
🚀 Ready to Transform Your Resale Unit?
Send us your floor plan and we’ll give you a clear, honest assessment — no fluff, no mark-ups.

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