Garage, Carport & Shed Approvals Sydney — Class 10a
Garage, carport and shed design and approvals across Sydney. Class 10a non-habitable structures — exempt development, CDC and DA pathways.
Contact UsExempt development rules for Class 10a
Under the SEPP (Exempt and Complying Development Codes) 2008, many garages and sheds don't need approval:
| Exempt criteria | Standard |
|---|---|
| Maximum floor area (shed) | 20 m² (30 m² for garages in some zones) |
| Maximum height | 3 m typical (3.5 m in some zones) |
| Position | Behind the front building line |
| Heritage | Not allowed in heritage conservation areas |
Cost benchmarks
| Structure | Construction cost |
|---|---|
| Single garage (basic) | $15,000 – $25,000 |
| Double garage with storage | $30,000 – $50,000 |
| Carport | $8,000 – $15,000 |
| Garden shed | $2,000 – $8,000 per m² |
| DA documentation (if needed) | $1,000 – $3,000 |
Frequently Asked Questions
What is a Class 10a structure?
Class 10a structures are non-habitable buildings like garages, carports and sheds associated with a dwelling. They are the simplest and cheapest structures to approve, and in many cases are exempt development under the State Environmental Planning Policy (Exempt and Complying Development Codes) 2008.
Do I need approval for a garage or shed in Sydney?
Many garages and sheds are exempt development if they meet the size and height limits: typically 20 m² maximum for sheds (30 m² for garages in some zones), behind the front building line, and not in a heritage conservation area. Larger structures need DA. Check your DCP.
How much does it cost to build a garage in Sydney?
Single garage (unlined, no power): $15,000–$25,000. Double garage with storage: $30,000–$50,000. Carport: $8,000–$15,000. Shed (non-attached): $2,000–$8,000 per m² depending on finishes. Approval costs (if DA needed): $1,000–$3,000.
Can I convert my garage to a habitable room?
Yes — but the conversion changes the classification from Class 10a to Class 1a, which triggers habitable-room standards: minimum ceiling height (2.4 m), natural light and ventilation, waterproofing, and BASIX compliance. A DA or CDC is required depending on existing structure and design.
What are the setbacks for garages and sheds?
Common DCP controls: garages must be behind the front building line, 900 mm minimum side setback, and 3 m minimum rear setback. Sheds under 20 m² can often be in side setbacks. Check your specific DCP.
Do garages and sheds need BASIX?
Non-habitable garages and sheds do not require BASIX. Conversion to habitable space (granny flat, studio, home office) triggers BASIX for the new habitable area.
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