Retaining walls need building approval, unless they meet all of the following criteria:
If you are unsure of these requirements a licenced contractor, designer, engineer or building certifier may be able to assist.
A side boundary setback should be a minimum of 600 millimetres to avoid maintenance or ownership issues with your neighbour.
Stormwater must be captured and piped to the kerb or stormwater system and cannot be concentrated onto your neighbour's property as a result of the work.
If your retaining wall affects your neighbour, you should speak to them before starting work; this helps avoid disputes or legal action.
To make a complaint about a retaining wall, please refer to the relevant sections within Report a problem - Development compliance.