How much does window installation & replacement cost in Singapore?
Free, no obligation. Sign in with Google to send your request.
Key takeaways
- Most window installation & replacement jobs in Singapore land between SGD 300–SGD 8,000 — known locally as window replacement (bca-approved contractors).
- Window works in Singapore are tightly regulated after fallen-window incidents: installation and replacement must be done by BCA-approved window contractors, HDB approval governs facade-visible changes, and owners face penalties for windows that fall due to poor maintenance.
- Prices below are researched national ranges, updated July 2026 — not quotes.
Window Installation & Replacement prices by job size in Singapore
| Job size | Low | Typical | High |
|---|---|---|---|
| Single window replacement Replace one aluminium window with approved contractor | SGD 300 | SGD 600 | SGD 1,200 |
| Three windows Replace three windows, one visit | SGD 900 | SGD 1,700 | SGD 3,200 |
| Whole flat (6-8 windows) Replace all windows in a typical HDB flat | SGD 2,500 | SGD 4,500 | SGD 8,000 |
Per-unit rates
| Unit | Low | Typical | High |
|---|---|---|---|
| per window (installed, aluminium) | SGD 300 | SGD 600 | SGD 1,200 |
What affects the price
- Job size and scope — bigger or more complex jobs move you up the ranges above.
- Access and condition — hard-to-reach areas, older properties or neglected maintenance add labour time.
- Materials and quality level — where materials are involved, the grade you choose often matters more than labour.
- Urgency — same-day or out-of-hours work usually carries a premium.
- Where you live — large metros in Singapore typically run above the national range; smaller towns below it.
How to save
- Get at least three quotes and compare like-for-like scopes, not just totals.
- Be flexible on timing — off-peak slots are often cheaper.
- Bundle related tasks into one visit to spread call-out costs.
- Agree the scope in writing up front to avoid change-order surprises.
How to hire a window installation & replacement pro in Singapore
- Use a BCA-approved window contractor — mandatory for window installation and replacement in Singapore
- For HDB flats, ensure the contractor is also HDB-registered and follows HDB window rules (no changes to facade appearance without approval)
- Confirm casement window rivets/friction stays and sliding window safety stoppers meet current retrofit rules
- Remember owners must ensure windows are checked (6-monthly self-checks encouraged); poorly maintained windows attract fines if they fall
- Get per-window pricing with disposal and sealant work included
- Confirm aluminium frame and glass spec (laminated glass for high floors is worth asking about)
Red flags
- Not on the BCA approved window contractor list
- Proposes facade changes without HDB/MCST approval
- No safety-device retrofit on old casements
- Cash-only with no documentation
- No awareness of fallen-window liability rules
How Handld researches prices
These are researched estimates, not quotes and not our transaction data. We compile ranges from published sources — national statistics, trade bodies and incumbent cost guides — normalise them to SGD, and adjust city pages by a population-based cost tier. Last updated July 2026. Basis: BCA window contractor scheme; SG renovation platform quotes.
Frequently asked questions
How long does window installation take?
Replacing a window in an existing opening takes 2-4 hours per window for an experienced crew — a whole house is usually 1-3 days. The wait is in manufacturing: made-to-measure windows typically take 2-8 weeks from survey to fitting.
Why is my double glazing misted up between the panes?
The sealed unit has failed and let moist air in. The fix is usually replacing just the glass unit, not the whole frame — a fraction of full replacement cost. Widespread misting across many windows of the same age suggests the batch is failing and full replacement may be better value.
How much does window replacement cost?
Windows are priced per opening: the unit itself (frame material, glazing spec, size) plus installation labour. A standard-size replacement in an existing opening is the base case; enlarging openings, upper-floor access, bay windows and heritage styles add meaningfully. Whole-house jobs get per-window discounts.
Can windows be replaced in winter or bad weather?
Yes — pros replace one opening at a time so the house is never fully open, and cold-weather installation is routine in cold climates. Sealants and foams have temperature limits, so extreme cold or rain may shift a schedule, but winter is often the quieter, cheaper season to book.
Do new windows need planning permission or permits?
Like-for-like replacement is usually permit-free, but many places regulate windows through energy codes, safety-glass rules, and egress requirements for bedrooms — and heritage/conservation properties almost always need consent for changes. Your installer should know local rules; ask what paperwork you'll receive at completion.
How do I choose between vinyl/uPVC, aluminium and timber windows?
uPVC/vinyl is the value pick: good insulation, low maintenance, mid-range look. Aluminium gives slim frames and durability (thermally broken frames fix its insulation weakness) at a higher price. Timber looks best and suits period homes but needs maintenance and costs most. Warranty and installer quality matter more than brand marketing.
Who can legally replace windows in Singapore?
Only BCA-approved window contractors — this is a licensing regime specific to Singapore introduced to stop fallen-window incidents. For HDB flats the contractor must also be HDB-registered, and facade appearance can't change without approval.
Free, no obligation. Sign in with Google to send your request.