Composite Decking Cost in Perth (2026)
In Perth, fierce UV weathers timber fast, so composite is a common choice, with freight on boards the catch.
Your composite decking details
Your estimate sits within the typical range.
Composite costs more than timber upfront but needs no oiling or staining, over 10 to 15 years it usually works out cheaper to own.
Where the money goes
Estimated breakdown for your configuration
💰 Ways to save
- Keep the deck shape simple and rectangular, angles and curves waste boards and add labour.
- A ground-level deck avoids the cost of a tall sub-frame, balustrade and steps.
or from $34/week over 5 years , indicative finance
How we estimate this
Composite decking in Australia typically costs $250 to $480 per square metre supplied and installed in 2026, so a 20m² deck lands around $5,000 to $9,500. Board tier, deck height and extras like railings drive the range.
Pricing reviewed: October 2026.
What a composite decking costs in Perth
Perth's fierce Mediterranean summer UV greys and dries a timber deck quickly, demanding frequent oiling, so composite is a popular choice here to escape that maintenance and hold a consistent look in the harsh sun. The sandy, free-draining soils are kind to the deck's footings and make the groundwork quick and cheap compared with the rock and clay of the eastern capitals, so the substructure side of a Perth deck is relatively straightforward whatever the boards on top.
Isolation is the cost that bites with composite specifically: the boards are a manufactured, often imported product that carries freight and lead time from the eastern states, and a particular colour or brand can take weeks to arrive, so the material premium is sharper here than in the east. Perth labour sits just below the national average, keeping the carpentry competitive. In the coastal suburbs composite's salt resistance over greying timber is a further draw, and a UV-stable board is worth specifying in the strong sun.
Compare against the national picture: Composite Decking Cost in Australia →
Composite Decking Cost in other cities
Frequently asked questions
How much does composite decking cost per m² in Australia?
Typically $250 to $480 per square metre supplied and installed in 2026, depending on board tier and deck height. A raised deck costs more due to the larger sub-frame.
Is composite decking cheaper than timber?
It costs more upfront but needs no oiling or staining, so over 10 to 15 years composite is usually cheaper to own than timber once maintenance is counted.