How Much Does Decking Cost in Perth?
Decking is one of the most commonly quoted carpentry jobs in Perth, and the price varies a lot by material - composite costs more upfront than timber but needs less ongoing maintenance.
Typical price
$120–$450 per m² fully installed, depending on material
Treated pine (material)
$200–$250/m²
Hardwood (material)
$320–$500/m²
Composite (material)
$350–$600/m²
Fully installed (labour + materials)
$120–$450/m²
Structural framework alone can add around $225/m² - a bare subframe is a meaningful part of total deck cost, not just the decking boards.
These are estimates based on typical Perth pricing, not a quote - get an exact price for your job by posting it free on Locentra.
Prices last reviewed: August 2026
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What affects the price
- Material choice - treated pine is the cheapest, composite and hardwood cost more but last longer.
- Whether a structural subframe is needed, which adds a separate per-m² cost.
- Site conditions - sloping or difficult blocks need more site preparation.
- Council permit requirements, which vary depending on deck height and your local council.
- Deck size and shape complexity, including stairs, balustrades, and multiple levels.
Frequently asked questions
Why does composite decking cost more upfront than timber?
Composite decking material costs more than treated pine, but it doesn't need the ongoing sanding, oiling, or repainting that timber decking does over its lifetime - many homeowners weigh the higher upfront cost against lower long-term maintenance.
Does the price include the subframe?
Not always - the structural framework underneath the decking boards is often priced separately and can add roughly $225/m² on top of the visible decking cost, so check whether a quote includes it.
Do I need a council permit for a new deck in Perth?
It depends on the deck's height and your local council - permits typically cost $200-$1,500 where required. Your carpenter or builder can usually advise whether your project needs one.
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