Guide to Building Retaining Walls in Victoria

May 15, 2023

If you're planning to build a retaining wall in Victoria, it's important to understand the regulations and requirements that apply. In this blog post, we'll guide you through the key information you need to know, including retaining wall regulations, whether you need a permit or council approval, how to apply for a Building Permit, the cost of a retaining wall permit, and why you should choose Code HQ for your retaining wall project.

Retaining wall regulations in Victoria

Retaining walls are regulated in Victoria under the Building Regulations 2018 and the Building Code of Australia (BCA). The BCA sets out the minimum standards for the design and construction of retaining walls, while the Building Regulations 2018 prescribe the requirements for Building Permits and approvals.

Do I need a Building Permit to build a retaining wall?

In most cases, a Building Permit is required to build a retaining wall in Victoria. However, there are some exemptions for minor retaining walls, such as those under 1 metre high that are not associated with other building works or do not support any loads other than the soil behind the wall. Any retaining wall associate with the support of an adjoining property also triggers a Building Permit, regardless of height. It's important to check with a professional building surveyor like Code HQ to determine whether a permit is required for your specific retaining wall.

DID YOU KNOW? If a retaining wall supports the soil of an adjoining property, you will likely need to serve Protection Works Notices to your neighbour detailing to them how their property is going to be protected during the excavation and construction of the retaining wall. Check out the Protection Works Pack in our Forms & Checklists section for more information regarding Protection Works.

Do I need council approval?

In addition to a Building Permit, you may also need council approval for your retaining wall project. This will depend on a range of factors, including the size, height, and location of the wall, as well as the zoning and overlay requirements for your property. Council approval may involve obtaining a planning permit. Again, it's important to check with your local council or a professional building surveyor like Code HQ to determine whether council approval is required for your retaining wall.

How to apply for a Building Permit?

To apply for a Building Permit for your retaining wall in Victoria, you will need to submit a Building Permit Application to CODE HQ. The application should include detailed plans and specifications of the proposed retaining wall, including structural drawings, geotechnical reports, and engineering details. The application fee will vary depending on the scope and complexity of the project.

Step 1: Prepare your application

Refer to our application checklist for more detailed description, however generally your permit application must include the following:


  • Title documents
  • A site plan showing the location of the proposed works
  • A detailed description of the works, including materials and design details
  • Structural details. An engineer is typically required to design retaining walls

Step 2: Submit your application

Once you have completed your application, submit it to CODE HQ with the required fee.

Step 3: Wait for approval

One of our technical team will review your application and notify you of their decision. If your application is approved and a Building Permit is issued, you can proceed with your works. If we require further information from you we will write to you detailing exactly what we need to further assess your application.

Cost of a retaining wall permit

The cost of a Building Permit for a retaining wall in Victoria will depend on a range of factors, including the size, height, and complexity of the wall, as well as the location of the property. Contact our sales team for a quick, obligation free quote.

Why Choose Code HQ

If you're planning to build a retaining wall in Victoria, choosing a professional building surveyor like Code HQ can help to ensure that your project meets all of the necessary safety and compliance requirements.

CODE HQ also offers a range of other services, including:



Code HQ's team of experienced and qualified building surveyors can provide expert advice and guidance throughout the retaining wall construction process, from obtaining Building Permits to carrying out inspections and issuing certificates of final inspection. By choosing Code HQ, you can be confident that your retaining wall project will be completed safely, efficiently, and in compliance with all the necessary regulations and requirements.

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