Granny flats are booming in Australia. Here's how to quote them profitably.
Understanding the Market
Size Limits by State
- NSW: 60m² maximum
- VIC: Varies by council
- QLD: 80m² maximum
- WA: 70m² maximum
Construction Methods
- Timber frame: $1,800-2,500/m²
- Steel frame: $2,000-2,800/m²
- Modular/prefab: $2,200-3,000/m²
Quote Components
Site Works
- Site clearing and preparation
- Slab or stumps
- Services connection (power, water, sewer)
- Driveway/access
Construction
- Frame and roof
- External cladding
- Windows and doors
- Internal linings
- Kitchen and bathroom
- Flooring
- Painting
Services
- Electrical fit-out
- Plumbing fit-out
- HVAC (if included)
Typical Pricing
- 40m² 1-bed: $100,000-140,000
- 50m² 1-bed: $120,000-170,000
- 60m² 2-bed: $150,000-200,000
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