Decking in Brisbane (2026)
Brisbane decks are near-standard on a Queenslander, but termites and the subtropical sun set the material spec.
| Decking boards (140mm hardwood) | 35 lengths | $1,663 |
| Joists | 15 | |
| Bearers | 4 | |
| Posts / footings | 10 | |
| Decking screws | ≈840 | |
| Substructure & fixings | $1,482 | |
| Installation labour | $3,840 |
or from $33/week over 5 years , indicative finance
How we estimate this
The number of decking boards depends on your deck area, board width and the gap between boards. This calculator allows ~10% for cutting waste and works out the supporting joists, bearers and posts as well.
Pricing reviewed: June 2026.
What a decking costs in Brisbane
The elevated timber Queenslander makes a deck an almost natural extension, and easy under-floor access keeps the build straightforward compared with a lowset slab home. The catch is the city's high termite pressure, which makes treated or naturally durable timber, proper clearances and metal post bases a genuine decision rather than an upgrade, because an untreated deck against a timber house is an invitation.
The subtropical climate brings intense UV and a distinct storm season, both of which punish a poorly finished deck, so oil and recoating cycles are shorter here than down south and a capped composite often pays for itself. Labour sits around the national baseline in a well-supplied market, so Brisbane is one of the better-value capitals to build a deck, with the structure of the home doing most of the work on cost.
Compare against the national picture: Decking in Australia →
Decking in other cities
Frequently asked questions
How many decking boards do I need?
It depends on the deck size, board width and gap. As a guide, 140mm boards with a 4mm gap cover about 7 lineal metres per square metre. The calculator works out the exact count plus waste.
How far apart should deck joists be?
Joists are commonly spaced 450mm apart for residential decks, closer for some composite boards. Always check the board manufacturer’s span requirements and Australian standards.
How much does decking cost per square metre?
Decking typically costs $200–$350 per square metre installed in 2026, depending on material. The calculator separates materials, substructure and labour.