Building retaining walls

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Residential retaining wall

If you are planning to build a retaining wall you need to understand if your project requires a building permit.

Retaining walls that are less than 1 metre high, constructed at a distance equivalent to the height away from existing buildings and any allotment boundary do not require a building permit.

Retaining walls require a building permit when:

  • Constructed on or near boundaries at any height 
  • The proposed wall is 1 metre or more in height, at any location 
  • Site excavations and/or site filling for the wall affect the stability of the ground on the allotment  
  • Any portion of an adjoining building may be adversely affected by any excavations and/or filling 
  • Any portion of an adjoining allotment may be adversely affected by any excavations and/or filling.

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For more information about building services please contact us on 03 5434 6347


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