Decking in Canberra (2026)
Canberra's hard frosts and high labour base make a deck here dearer to build and harder on the timber.
| 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 Canberra
Canberra carries one of the highest trade labour bases in the country, driven by a small, high-income market, so the build share of a deck quote runs above the national figure even when the materials are identical. The large stock of ageing ex-government homes often pairs a new deck with bringing dated structures up to standard, and the smaller local market with higher operating costs means fewer keen quotes than a big city delivers.
The climate is the structural story: Canberra has the widest temperature range of any capital, with freezing frosty winters and hot dry summers that cycle timber hard, opening joints and checking boards faster than in milder cities. That rewards a durable species or composite and a disciplined finishing schedule, and sites on the bushfire-exposed fringe may need decking and sub-frame materials chosen with ember attack in mind.
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.