Deck Cost in Perth (2026)
Perth's fierce UV weathers timber decking fast, pushing many homes toward composite.
Your deck details
Approximate deck size in square metres.
Your estimate sits within the typical range.
Where the money goes
Estimated breakdown for your configuration
💰 Ways to save
- Treated pine is cheapest; keeping the deck ground-level avoids balustrade costs.
- Skip the roof/pergola over the deck unless you need year-round shade.
or from $34/week over 5 years , indicative finance
How we estimate this
A deck in Australia typically costs $200–$350 per square metre in 2026 for the deck itself, depending on material. Treated pine is cheapest, hardwood mid-range, and composite the most expensive but lowest-maintenance.
Pricing reviewed: June 2026.
What a deck costs in Perth
The intense Perth sun is the defining factor: strong UV dries out, greys and weathers a timber deck quickly, so a timber deck here needs frequent oiling and maintenance to keep its looks, and that upkeep burden is why many Perth homes choose composite decking, which resists the UV and needs no oiling, despite the higher upfront price. Quality hardwoods also cope better than softwoods in the sun.
Footings into Perth's sandy or limestone ground vary in difficulty, with sand easy and limestone slow. Perth labour sits just below the national average, so the build is competitive. For a Perth deck, the harsh-sun weathering and the timber-versus-composite decision it forces, along with the ground conditions for footings, are the factors that most shape the result and the long-run cost.
Compare against the national picture: Deck Cost in Australia →
Deck Cost in other cities
Frequently asked questions
How much does a deck cost per square metre in Australia?
Decks typically cost $200–$350/m² in 2026. Treated pine is cheapest, hardwood mid-range, and composite the most expensive but lowest-maintenance.
Is composite decking worth the extra cost?
Composite costs more upfront but needs no oiling or staining and lasts longer, so it can work out cheaper over time. It suits people who want minimal maintenance.
Do I need council approval for a deck?
Low ground-level decks are often exempt, but elevated decks usually require approval. Rules vary by state and council, check before building.