Retaining Wall Cost Calculator
Estimate the cost of a retaining wall in Australia. Enter the length and height, then choose the material.
Your retaining wall details
Your estimate sits within the typical range.
Your estimate sits within the typical range.
Where the money goes
Estimated breakdown for your configuration
Drainage behind the wall is essential, water build-up is the leading cause of retaining-wall failure.
Ways to save
- Timber or concrete sleepers are far cheaper than stone or besser block.
- Keep walls under 1m where possible to avoid engineering and approval costs.
How we estimate this
Retaining walls in Australia in 2026 typically cost $250–$700 per square metre of wall face depending on material and height. Timber sleepers are cheapest; natural stone is the most expensive.
Pricing reviewed: October 2026.
Retaining wall prices by city
Costs vary by city. See the local breakdown for your capital.
Doing more than just retaining wall?
Build a combined estimate across every part of your project in one place.
Pricing reviewed October 2026. Indicative Australian costs, not a quote.
Understanding retaining wall costs in Australia
Retaining walls in Australia in 2026 typically cost $250–$700 per square metre of wall face depending on material and height. Timber sleepers are cheapest; natural stone is the most expensive.
Walls over one metre usually require engineering and council approval, adding cost. Proper drainage behind the wall is essential and is a common added item.
Frequently asked questions
How much does a retaining wall cost in Australia?
Typically $250–$700 per square metre of wall face in 2026. Timber sleepers are cheapest; stone is the most expensive.
Do I need approval for a retaining wall?
Walls over about one metre usually require engineering and council approval. Lower walls are often exempt, check locally.
Why does drainage matter?
Water building up behind a wall is a leading cause of failure. Agi pipe and gravel drainage is essential and adds to the cost.
Are you a outdoor / landscaping business?
Everyone on this page is working out what retaining wall costs because they are ready to hire. Put your business right beneath the calculator, in your state, so you are who they find. From $100/mo.