How Much Does a Retaining Wall Cost per Metre?
One of the first questions property owners ask when planning a retaining wall project is how much it will cost per linear metre. The answer depends heavily on the material you choose, the height of the wall, site access, and whether engineering or council approval is required. Below is a realistic comparison of the most common retaining wall materials and their per-metre costs in Australia.
Material Cost Breakdown per Linear Metre
These figures represent typical installed costs for a wall approximately 1 metre high, including labour and materials:
- Treated timber sleepers: $200 – $450 per linear metre
- Concrete sleepers: $350 – $700 per linear metre
- Concrete blocks (Besser or similar): $400 – $750 per linear metre
- Sandstone: $500 – $900 per linear metre
- Gabion baskets: $400 – $800 per linear metre
- Rock/boulder walls: $300 – $700 per linear metre
For a more detailed breakdown of pricing across all material types, visit our comprehensive retaining wall cost guide.
Factors That Influence Cost per Metre
The per-metre price is not just about materials. Several factors can push costs higher:
- Wall height: Costs increase significantly once a wall exceeds 1 metre. Taller walls require deeper footings, more reinforcement, and often engineering certification.
- Site access: Difficult access requiring manual handling instead of machinery adds to labour costs.
- Drainage requirements: Proper drainage behind the wall is essential and adds to the overall expense.
- Engineering and council fees: Walls over 1 metre in Queensland typically need engineering design and council approval, adding $1,500 – $5,000 or more to the project.
Getting an Accurate Estimate
Online cost-per-metre figures give you a starting point, but every site is different. Soil conditions, slope gradient, and the purpose of the wall all affect pricing. Use our retaining wall cost calculator to get a ballpark estimate tailored to your specifications before requesting formal quotes.
The best way to get an accurate cost for your project is to have a licensed builder inspect the site and provide a detailed quote. Connect with licensed retaining wall builders in your area to receive obligation-free quotes and expert advice on the right material for your budget and site conditions.