How much does a decking cost in Adelaide?
Most decking in Adelaide costs $4,600–$14,700
for a standard 15–25 sqm deck
A small 15 sqm hardwood deck in Adelaide costs $4,600–$9,200. A medium 25 sqm deck runs $7,350–$14,700. Per-sqm rates range from $165/sqm for treated pine to $505/sqm for composite.
+3.2%
Decking costs in Adelaide have risen this quarter, driven by strong construction activity and trade shortages.
Q1 2026 vs Q4 2025
Average Decking Cost in Adelaide
$126
per hour for standard residential work
Call-Out Fee
$63–$158
Emergency Rate
$263–$735
Common Job
$158–$420
Decking in Adelaide costs $165–$320/sqm for treated pine, $275–$505/sqm for merbau hardwood, and $260–$505/sqm for composite decking (all supply and installation). A medium 25 sqm deck costs $7,350–$14,700 depending on the material and complexity.
Detailed Pricing — Adelaide 2026
| Service | Low | Typical | High |
|---|---|---|---|
| Treated pine deck (per sqm) | $165/sqm | $240 | $320 |
| Hardwood deck — merbau (per sqm) | $275/sqm | $385 | $505 |
| Hardwood deck — spotted gum (per sqm) | $320/sqm | $440 | $550 |
| Composite deck (per sqm) | $260/sqm | $370 | $505 |
| Small deck (15 sqm, hardwood) | $4,600total | $6,900 | $9,200 |
| Medium deck (25 sqm, hardwood) | $7,350total | $11,050 | $14,700 |
| Large deck (40 sqm, hardwood) | $11,950total | $17,500 | $23,900 |
| Deck steps (per step) | $140/step | $230 | $370 |
| Deck balustrade / railing (per lm) | $110/lm | $185 | $320 |
| Deck sanding + oiling (per sqm) | $23/sqm | $37 | $55 |
| Old deck demolition + removal | $18/sqm | $32 | $51 |
| Pergola over deck (basic) | $4,600total | $7,350 | $13,800 |
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.