What composite decking costs per square metre in Australia — by brand, by quality tier and broken down into supply, install and extras so you can quote with confidence.
Prices are indicative for Australian metropolitan areas. Regional areas may incur additional travel costs. For a full deck cost guide including timber, see the Deck Cost Guide →
Composite decking boards in Australia typically range from $70 to $170 per square metre for supply only. Entry-level boards use a wood-plastic composite blend and suit budget projects. Mid-range boards offer better UV stability and colour options. Premium boards feature capped polymer surfaces for superior scratch and stain resistance. Popular brands available in Australia include Modwood, Ekodeck, Trex, NewTechWood and Futurewood.
Installation typically costs $70–$100 per square metre. This includes subframe construction (usually steel or treated pine joists), board fixing, fascia boards and basic site preparation. Elevated decks, decks over 1m high (requiring balustrades), and decks with complex shapes or multiple levels will cost more.
Deck height — elevated decks need engineer-designed subframes and balustrades
Subframe material — treated pine is cheapest, steel is more durable and expensive
Board profile — hollow boards are cheaper, solid boards are stronger and pricier
Site access — difficult access increases labour time
Deck size — larger decks have a lower per-m2 cost due to setup efficiencies
Extra features — stairs, lighting, in-deck drainage, custom fascia
FMN's Smart Estimates lets you save decking as a reusable recipe with your preferred board brands, labour rates and waste allowances. Supplier pricing keeps your composite board costs up to date so your quotes reflect current market prices.
All prices on this page are estimates only, last updated July 2026. Actual costs vary by location, project scope, material selection, site access and contractor. Always obtain written quotes from licensed tradespeople for your specific project.
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Composite decking costs $140–$270 per square metre supplied and installed in Australia, depending on board quality, subframe type and deck height. Entry-level composite is around $140–$190/m², mid-range is $160–$230/m², and premium capped boards are $200–$270/m².
Composite decking is typically more expensive upfront than treated pine ($95–$145/m²) but comparable to hardwood ($140–$195/m²). Over its lifespan, composite can be cheaper because it requires less maintenance — no oiling or staining — and lasts 20–30 years.
A well-built composite deck can add value by extending usable outdoor living space. Composite decks are attractive to buyers because they require minimal maintenance. The return on investment depends on deck size, quality and the property's location.
Quality composite decking lasts 20–30 years in Australian conditions. Premium capped composite boards come with warranties of 25 years or more. Lifespan is affected by sun exposure, foot traffic and how well the subframe is maintained.