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Granny Flat Prices Australia
Prices include GST. Allow 12–20 weeks for a standard granny flat build from approval to handover. Site conditions, council requirements, and finishes affect final costs.
Granny Flat Prices by Type — Australia
Prices include GST. Allow 12–20 weeks for a standard granny flat build from approval to handover. Site conditions, council requirements, and finishes affect final costs.
| Service | Unit | From | Average | Up to |
|---|---|---|---|---|
| 🏠1-Bedroom Granny Flat (40m²) Complete 1-bedroom secondary dwelling with kitchen, bathroom, and living area | /job | $80,000 | $110,000 | $140,000 |
| 🏡2-Bedroom Granny Flat (60m²) Full 2-bedroom granny flat with kitchen, bathroom, laundry, and living area | /job | $120,000 | $160,000 | $200,000 |
| 🛖Studio Granny Flat (25m²) Compact open-plan studio with kitchenette and ensuite bathroom | /job | $55,000 | $72,000 | $90,000 |
| 📦Kit/Prefab Granny Flat (1-bed) Factory-built kit or prefabricated 1-bedroom granny flat delivered and assembled on site | /job | $50,000 | $72,000 | $95,000 |
| ✏️Custom-Designed Granny Flat Architect or designer-led custom granny flat with premium finishes and unique layout | /job | $150,000 | $215,000 | $280,000 |
| 🚗Granny Flat with Garage Granny flat with integrated or attached single-car garage | /job | $140,000 | $195,000 | $250,000 |
| ♿Disability-Accessible Granny Flat Fully accessible granny flat with wider doorways, wet-room bathroom, and ramp access | /job | $100,000 | $140,000 | $180,000 |
| 📋Council Approval & Planning Development application, complying development certificate, or planning approval fees | /job | $5,000 | $10,000 | $15,000 |
| 🏗️Site Preparation & Slab Site clearing, levelling, services connection, and concrete slab foundation | /job | $15,000 | $25,000 | $35,000 |
| 🔨Granny Flat Renovation/Extension Renovate or extend an existing granny flat with updated finishes and layout changes | /job | $40,000 | $70,000 | $100,000 |
| 🚚Transportable Granny Flat Pre-built transportable granny flat delivered complete and craned into position | /job | $60,000 | $90,000 | $120,000 |
| 🔌Granny Flat with Separate Services Granny flat with independent water, electricity, and sewer connections | /job | $130,000 | $175,000 | $220,000 |
Granny Flat Prices by City
Click a city for detailed local pricing and tips
Sydney
New South Wales · 5.3M
From $5,500
Newcastle
New South Wales · 320K
From $5,000
Wollongong
New South Wales · 310K
From $5,000
Central Coast
New South Wales · 340K
Pricing available
Melbourne
Victoria · 5.1M
From $5,000
Geelong
Victoria · 270K
From $4,500
Ballarat
Victoria · 115K
Pricing available
Bendigo
Victoria · 100K
Pricing available
Brisbane
Queensland · 2.6M
From $5,000
Gold Coast
Queensland · 680K
From $5,000
Sunshine Coast
Queensland · 350K
From $5,000
Cairns
Queensland · 160K
Pricing available
Townsville
Queensland · 195K
From $5,000
Adelaide
South Australia · 1.4M
From $4,500
Mount Gambier
South Australia · 30K
Pricing available
Perth
Western Australia · 2.1M
From $5,000
Mandurah
Western Australia · 100K
Pricing available
Bunbury
Western Australia · 75K
Pricing available
Hobart
Tasmania · 240K
From $5,000
Launceston
Tasmania · 90K
Pricing available
Canberra
ACT · 460K
From $5,500
Darwin
Northern Territory · 150K
From $5,000
Alice Springs
Northern Territory · 25K
Pricing available
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Granny flat costs in Australia range from $5,000 for council approval and planning to $280,000 for a custom-designed build. Prices include GST. Allow 12–20 weeks for a standard granny flat build from approval to handover. Site conditions, council requirements, and finishes affect final costs.
The most common options in Australia are granny flat / secondary dwelling. Services include 1-bedroom and 2-bedroom builds, studios, kit/prefab options, custom designs, accessible builds, council approval, site preparation, renovations, transportable units, and builds with separate services.
A standard granny flat in Australia takes 12–20 weeks from slab to handover. Kit/prefab builds can be completed in 8–12 weeks. Custom designs may take 20–30 weeks. Council approval adds 2–24 weeks depending on the pathway.
Yes — all granny flats and secondary dwellings in Australia require some form of building or planning approval. The specific requirements vary by state, territory, or local council. Your builder or certifier will advise on the correct approval pathway for your property.
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