Timber Decking Cost in Perth (2026)
In Perth, fierce UV is the enemy of a timber deck, making species choice and oiling the key decisions.
Your timber decking details
Your estimate sits within the typical range.
Hardwood decks need oiling every one to two years to stay looking good and resist greying, factor the ongoing cost in, not just the build.
Where the money goes
Estimated breakdown for your configuration
💰 Ways to save
- Treated pine costs far less if you are happy to oil it and accept a shorter life.
- A simple rectangular, ground-level deck is the cheapest to build.
or from $27/week over 5 years , indicative finance
How we estimate this
Timber decking in Australia typically costs $200 to $400 per square metre supplied and installed in 2026, so a 20m² deck is roughly $4,000 to $8,000. Treated pine is cheapest, hardwoods like merbau and spotted gum cost more.
Pricing reviewed: October 2026.
What a timber decking costs in Perth
Perth's fierce Mediterranean summer UV is the hardest thing on a timber deck here, drying, greying and checking the boards and demanding frequent oiling to keep them looking right, so the species choice matters: durable, oily hardwoods like jarrah, a local timber, and spotted gum stand up to the sun far better than cheaper pine. Jarrah in particular is a Western Australian hardwood with a strong local following and availability, which can make a premium timber deck more attainable here than in the east.
The sandy, free-draining soils make the deck's footings quick and cheap to set compared with the rock and clay of the eastern capitals, so the substructure side is relatively straightforward. Perth labour sits just below the national average, keeping the carpentry competitive. The real long-run cost is the UV-driven maintenance: an un-oiled Perth deck greys within a season or two, so the saving over composite is offset by the oiling the strong sun demands. Coastal salt adds to the weathering near the beach.
Compare against the national picture: Timber Decking Cost in Australia →
Timber Decking Cost in other cities
Frequently asked questions
How much does timber decking cost per m² in Australia?
Typically $200 to $400 per square metre supplied and installed in 2026. Treated pine is cheapest; merbau and premium hardwoods cost more.
How often does a timber deck need oiling?
Most hardwood decks need oiling every one to two years to resist greying and wear. Treated pine needs similar upkeep and has a shorter outdoor life.