Do I Need a Permit for My Renovation? Australian Guide (2026)
When do you need council approval or a building permit for home renovations in Australia? State-by-state guide with examples.
Why Building Permits Matter
Building permits (also called development approvals or planning approvals depending on your state) exist to ensure construction work is safe, meets Australian building standards, and complies with local planning regulations. Working without a required permit can result in fines, forced demolition, and serious issues when you try to sell your home.
Common Work That Usually Requires a Permit
The following types of work generally require some form of building or planning approval across most Australian jurisdictions.
- New home construction
- Home additions and extensions (adding rooms, extending footprint)
- Granny flats and secondary dwellings
- Structural alterations (removing load-bearing walls)
- New decks over 1m high or over 10m² in area (rules vary by state)
- Swimming pools and spas
- Retaining walls over 600–900mm high (varies by state)
- Carports and garages attached to the house
- Roofed pergolas over certain sizes
- Changes to drainage or stormwater
- Commercial-to-residential conversions
Common Work That Usually Doesn't Require a Permit
Many smaller renovation and maintenance tasks are exempt from permit requirements, though rules vary between states and even between councils within the same state.
- Painting (interior or exterior)
- Replacing floor coverings
- Like-for-like roof tile or cladding replacement
- Kitchen and bathroom renovations (no structural changes)
- Replacing windows in the same opening
- Fencing (most residential fences)
- Small garden sheds (under certain size thresholds)
- Replacing plumbing fixtures in the same location
Permit Requirements by State
Building and planning approval processes differ significantly between Australian states. Here is a summary of the key authorities in each state.
- NSW — Building approval via private certifier or council; planning approval from council
- VIC — Building permit from a registered building surveyor (private or council)
- QLD — Building approval from council or private certifier; development approval from council for planning matters
- WA — Building permit from local government (council)
- SA — Development approval from council for most work
- TAS — Building approval from council or private certifier
- NT — Building permit from NT Building Advisory Services
- ACT — Building approval from ACT Planning
Frequently Asked Questions
DIY Renovation Work vs Licensed Tradies — What the Permit Rules Actually Mean
Understanding permit requirements goes hand-in-hand with knowing which work must be done by licensed professionals. In Australia, any work that requires a building permit almost always also requires licensed tradespeople to carry it out — and unlicensed work on permitted projects can invalidate the permit entirely. Our full DIY vs Pro guide maps exactly which tasks are legal to DIY and which require a licensed contractor.
Now you know the cost — here's how to hire the right tradie
Knowing a fair price is only half the battle. Use these guides to collect accurate quotes, verify licences, and avoid the most common hiring mistakes.
Renovation Guides Hub
All 6 renovation cost and permit guides for Australian homeowners — kitchen, bathroom, roofing and more.