; What approvals do I need? - Retaining walls - City of Wanneroo
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What approvals do I need? - Retaining walls

Description A retaining wall is a structure that retains soil when there is a change in ground levels.
Do I need approval?

A planning approval is required for retaining walls. The retaining walls in this instance are those proposed within a lot in order to construct a dwelling if the terrain of the lot is undulating requiring retaining walls. Please note: A planning approval should be obtained prior to submitting for a building permit. 

A building permit is required for retaining walls where a proposed retaining wall exceeds 500mm in height, is an addition to an existing retaining wall and/or in the case of tiered walls, the walls exceed 500mm in total height.

What do I need to submit?

Planning

Please refer to our DA Checklist - Residential Additions for a complete list of the information required to apply for planning approval.

Building

Please refer to our Retaining Walls Information Sheet for a complete list of the information required to apply for a building permit.

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