Australian price guide · 2026
How much does granny flat construction
cost in Australia?
Complete 1- or 2-bedroom secondary dwelling — slab, frame, roof, electrical, plumbing, finishes.
Typical total (AU)$130,000–$220,000 for 60m²
What's in a typical quote
| Line item | Typical range |
|---|---|
| Turnkey build (per m²) | $2,400–$3,200 |
| Council approval + CDC | $6,500–$14,000 |
| Driveway + services | $8,500–$18,000 |
What affects the price
- Size m²
- Finishes (basic vs premium)
- Site access + slope
- Council DA vs CDC pathway
How to get the most accurate price
Prices vary a lot by region, access, and job specifics. For a real quote, get 2–3 licensed builders to assess the job — most reputable tradies quote for free. GST (10%) is added on top of the ranges shown.
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