A retaining wall is a structure erected to support excavated or filled earth on a property.
The responsibility for the installation of a retaining wall rests with the person that has excavated or filled their land.
Adjoining landowners may become involved when the retaining wall is located on the common boundary of both properties and/or the wall is for the benefit of both properties. In the case of a common retaining wall, the two adjoining landowners must agree on any proportionate costs. However, Council cannot act as a mediator in relation to costs.
In some instances, a Development Application may not be required for the installation of a retaining wall. Please refer to Parts 1 and 2 of State Environmental Policy (Exempt and Complying Development Codes) 2008, to determine whether your retaining wall is exempt from the need to obtain development consent. The Codes SEPP is available for download below.
If in doubt, before starting works, contact a Council Planning Advisor through: Council Customer Service Centre.