Home Extension Cost Malaysia 2026: What You'll Really Pay
Terrace houses outgrow their families — which is why rear extensions are Malaysia's most common A&A (Alteration & Addition) project. Here are the real 2026 numbers.
2026 extension costs by type
| Type | Cost / ft² | Typical example |
|---|---|---|
| Ground-floor rear extension (kitchen/room) | RM150 – RM220 | 200 ft² ≈ RM30k – RM44k |
| Side/front extension (enclosed porch) | RM130 – RM200 | 150 ft² ≈ RM20k – RM30k |
| Upper-floor extension | RM220 – RM320 | 300 ft² ≈ RM66k – RM96k |
| Extra bathroom inside the extension | +RM8k – RM15k | plumbing, waterproofing, tiles, fittings |
A real example from our engine: a 280 ft² kitchen extension with light renovation works on a Johor terrace house — existing roof kept, partial rewiring, tiles in the bathroom only — prices at roughly RM69,000 including preliminaries, statutory contributions and contingency. Clear scope keeps the number down; vague scope inflates it.
What's inside the cost
- Foundations & ground slab — the biggest single chunk after structure
- Brick walls, plastered both sides
- Roofing — metal deck is the most economical; tying into an existing tiled roof costs notably more
- Doors & windows — standard aluminium
- Wiring & lighting from the existing DB
- Finishes — floor tiles, full paint in the work area
- Structural stitching to the existing wall + waterproofing the junction (where leaks happen if done badly)
Enter the extension size and your scope choices (keep the roof? partial wiring? tiles where?). Wakkiro generates a full itemised BOQ at current market rates.
Estimate My Extension →Permits: don't skip them
- A&A drawings by a registered architect/draughtsman — RM1,500–RM4,000
- PBT permit fee — RM500–RM2,000 depending on council and area
- Approval time — 1–3 months. Unpermitted extensions risk demolition notices and complications when selling
How to save without cutting corners
- Keep the existing roof where possible — tying into old roof structure is a major hidden cost
- Simple rectangular shape — every extra corner adds foundation and roofing cost
- One mobilisation — doing works in phases means paying contractor preliminaries twice
- State what you're NOT doing — "no tiling except the bathroom" can save five figures
Full BOQ, local vs foreign labour scenarios, and a realistic work programme for your extension.
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