How much does a retaining wall cost in Adelaide?
Most retaining walls in Adelaide cost $2,300–$13,800
for a standard residential wall
A 10-metre wall at 1m height in Adelaide costs $2,300–$6,450. Per-metre rates range from $185/lm for timber sleepers to $645/lm for sandstone. Walls over 1.5m need engineering ($460–$1,850).
+3.0%
Retaining Wall costs in Adelaide have risen this quarter, driven by strong construction activity and trade shortages.
Q1 2026 vs Q4 2025
Average Retaining Wall Cost in Adelaide
$126
per hour for standard residential work
Call-Out Fee
$63–$158
Emergency Rate
$263–$735
Common Job
$158–$420
A retaining wall in Adelaide costs $185–$415 per lineal metre for timber sleepers, $230–$550/lm for concrete sleepers, and $320–$645/lm for sandstone. A standard 10-metre wall at 1m height costs $2,300–$6,450. Larger or engineered walls can cost significantly more.
Detailed Pricing — Adelaide 2026
| Service | Low | Typical | High |
|---|---|---|---|
| Timber sleeper wall (per lineal metre) | $185/lm | $295 | $415 |
| Concrete sleeper wall (per lm) | $230/lm | $370 | $550 |
| Block / besser wall (per lm) | $275/lm | $460 | $690 |
| Sandstone wall (per lm) | $320/lm | $505 | $645 |
| Boulder wall (per lm) | $230/lm | $370 | $550 |
| Gabion wall (per lm) | $275/lm | $460 | $735 |
| Small garden wall (5 lm × 0.5m) | $920total | $1,650 | $2,575 |
| Standard wall (10 lm × 1m) | $2,300total | $4,150 | $6,450 |
| Large wall (15 lm × 1.5m) | $4,600total | $8,300 | $13,800 |
| Engineering / structural cert | $460per job | $920 | $1,850 |
| Drainage behind wall | $28/lm | $46 | $74 |
| Old wall demolition + removal | $46/lm | $92 | $165 |
Prices verified February 2026 · Cross-referenced against 90+ Australian trade pricing sources · See methodology
Prices include GST. Based on Adelaide metro area, Feb 2026. Outer suburbs may vary.