How wide can my garage or carport opening be?
The total width of your garage door opening or carport opening facing a street cannot be more than 50% of the width of the building façade facing that street. This limit does not apply if the garage or carport faces a rear lane.
The Planning (Residential Zones) Technical Specifications 2026 limit the size of garage doors and carports that face a street. The combined width of all garage door openings or the external width of a carport must not exceed 50% of the total length of the building façade facing that street.
This requirement is intended to ensure that garages and carports do not dominate the appearance of the home from the street. The requirement does not apply where the garage or carport faces a rear lane.
For example, if the front of your house is 12 metres wide, the garage door or carport opening can be up to 6 metres wide.
Reference: Planning (Residential Zones) Technical Specifications 2026 (NI2026-303), Assessment Outcome 27.6- Planning (Residential Zones) Technical Specifications 2026
Link on the answer: https://www.legislation.act.gov.au/View/ni/2026-303/current/PDF/2026-303.PDF
Where this question is kept
| Dual Occupancy Q&A | #208 | agrees | 31/07/2026 |