Building permits exist to ensure construction work meets safety and planning standards. The rules vary by state, but some general principles apply across Australia.
Work that typically requires a permit includes structural alterations, extensions, new buildings, demolition, plumbing work beyond minor repairs, electrical work, and changes to the building envelope (windows, walls, roofing).
Work that typically does not require a permit includes painting, wallpapering, replacing like-for-like fixtures, minor landscaping, and installing shelving or storage.
The grey area includes carports, pergolas, sheds, decks, and fences. Requirements depend on size, height, location on the lot, and your local council's rules. Always check with your council before starting.
The permit process generally involves submitting plans to a building surveyor or certifier, who reviews them against the Building Code of Australia (BCA) and any local planning overlays. Approval timelines range from a few days for simple work to several weeks for complex projects.
Working without a required permit can result in fines, orders to demolish non-compliant work, and complications when selling your property. It can also void your home insurance for related claims. The cost of a permit is minimal compared to these risks.