# Retaining Wall Cost Calculator Australia

This is the text version of https://www.supertrades.com.au/calculators/retaining-wall-cost-calculator.

A retaining wall cost in Australia can vary a lot depending on the material you choose and the wall height. Using the current retaining wall price guide, costs start from treated pine sleepers at $280 per lm and go up to natural stone or sandstone at $750 per lm, before height adjustments and the minimum $2500 AUD job charge are applied.

## Retaining Wall price breakdown

Typical job based on 15 lm. Prices are supply-and-install midpoints. Actual quotes vary.

| Type | Cost per lm | Typical 15 lm job |
| --- | --- | --- |
| Treated pine sleepers | $280 | $4,200 |
| Hardwood sleepers | $420 | $6,300 |
| Concrete sleepers | $450 | $6,750 |
| Besser block / masonry | $650 | $9,750 |
| Natural stone / sandstone | $750 | $11,250 |

## What affects Retaining Wall cost

- **Wall material:** Material is one of the biggest drivers of retaining wall installation cost. Rates range from $280 per lm for treated pine sleepers to $750 per lm for natural stone or sandstone, with concrete sleepers at $450 per lm and besser block or masonry at $650 per lm.
- **Wall height:** Height changes the total cost to build retaining wall because taller walls need more structure and labour. The pricing uses a multiplier of 0.7 for walls up to 0.8 m, 1 for 1–1.2 m walls, and 1.6 for walls of 1.5 m or more.
- **Wall length:** This calculator works on a per lineal metre basis, so a longer wall means a higher total retaining wall cost. A typical example uses 15 lm, but the same per-lm rates scale up or down depending on your project length.
- **Minimum job charge:** Smaller projects can still be affected by the minimum job charge of $2500 AUD. If the calculated amount comes in below that threshold, the estimate is lifted to the minimum instead.

## Frequently asked questions

### What is the average retaining wall cost for a typical 15 lm job?

For a typical 15 lm wall at 1–1.2 m high, the midpoint cost starts at $4200 AUD for treated pine sleepers and can reach $11250 AUD for natural stone or sandstone. With the displayed estimate range set at ±20%, that works out to about $3360–$5040 AUD at the low end and $9000–$13500 AUD at the high end. The final retaining wall cost depends on the material and height category you select.

### How much is concrete sleeper retaining wall cost per metre?

Concrete sleeper retaining wall cost per metre is $450 per lm at the standard 1–1.2 m height setting. For walls up to 0.8 m, the 0.7 multiplier brings the midpoint to $315 per lm, while walls 1.5 m and over increase to $720 per lm using the 1.6 multiplier. Very small jobs may still be priced at the $2500 AUD minimum.

### What is the concrete retaining wall cost in Australia?

If you are comparing a concrete retaining wall cost, concrete sleepers are priced at $450 per lm and besser block or masonry is $650 per lm before range adjustments. For a 15 lm wall at 1–1.2 m high, that gives midpoint totals of $6750 AUD for concrete sleepers and $9750 AUD for besser block or masonry. The displayed estimate range is ±20% around those figures.

### What is the timber retaining wall cost compared with other options?

Timber retaining wall cost is usually the most budget-friendly in this guide, with treated pine sleepers at $280 per lm and hardwood sleepers at $420 per lm for a 1–1.2 m wall. On a 15 lm job, that equals midpoint totals of $4200 AUD and $6300 AUD respectively. Lower walls may reduce the calculated amount, but the $2500 AUD minimum charge can apply to smaller jobs.

### How much is sandstone retaining wall cost or stone retaining wall cost?

Sandstone retaining wall cost and stone retaining wall cost are priced at $750 per lm for natural stone or sandstone at the standard 1–1.2 m height. For a typical 15 lm project, that gives a midpoint of $11250 AUD, with a displayed range of approximately $9000–$13500 AUD. Taller walls at 1.5 m or more are costed higher using the 1.6 multiplier.

### What affects the cost to build retaining wall the most?

The biggest factors are material, wall height and total length, all of which directly change the retaining wall price. For example, a 15 lm treated pine wall at 1–1.2 m is $4200 AUD at midpoint, while the same length in natural stone or sandstone is $11250 AUD. Height also matters, with multipliers of 0.7 for up to 0.8 m, 1 for 1–1.2 m, and 1.6 for 1.5 m and above.

Quotes: [Retaining Walls](https://www.supertrades.com.au/retaining-walls/index.md).