How much does composite decking cost in 2023?

Composite wood decking cost consists of labour, materials and size of the area. All three can vary according to the quality, location or size and shape. The average price range can run anywhere from $100 to $350 per square meter. Below is a table of the average cost of labour installation in various Australian states. 

 

Average costs for installation

State	Average labour cost
NSW	$200 to $210 per m2
VIC	$190 to $200 per m2
QLD	$185 to $190 per m2
WA	$170 to $180 per m2

There are many benefits of composite decking versus hardwood and treated softwood timber. While solid wood is appealing, the upkeep and longevity cannot compete with composite decking. 

Durable – Composite decking is more robust than most people think. Made from plastic and wood pulp, the warranty for composite decking can be up to 25 years. 

UV resistant – While some products can fade from the UV rays of the sun, composite decking is fade resistant. Also waterproof and fireproof, it is an excellent product for using in areas with heavy rains or near fire pits.

Stain-resistant – Composite decking is unlike wood that can become stained from liquid spills and oil-based products. It is usually resistant to shoes that track in tar or water rings from sweaty glasses. Mould and rot are also held at bay through the unique manufacturing process.

Lightweight – Building a deck with composite wood is easy compared to working with heavy timber. Composite decking boards are available in 6′ to 24′ panels for less piecing and light enough to maneuver.

Low maintenance – With composite decking, there is no need for yearly care of staining or varnishing. A quick wash down is all that is required to keep this material looking as good as new.

Decks can be different shapes and sizes. Many considerations affect a composite decking installation cost.

Size of the area – Whether you are building a 4’x4′ deck or a 16’x20′ deck, the size has a dramatic impact on the end cost. Composite decking cost per square metre can cost between $100 and $350 depending on the design, the number of permits needed and finishing pieces required.

The shape of the deck – Not every deck is square or horizontal. Creating a deck that hugs your house with turns and curves can add a fascinating touch to your exterior. However, it will require a deck-building expert and a composite decking cost calculator to arrive at an estimate. A landscaper may also be called in for advice.

Labour costs – Labour costs can vary depending on the complexity of the job. A small, simple square deck may cost $80 per m/2 while a more elaborate job can run $180 per m/2. Concrete work may also be needed for proper setting of the base.

Additional decking materials – Additional items like steps, railing and built-in lights will always increase the labour costs. Also, if any structural construction requirements need to be met, the price will increase.

A composite decking cost calculator can aid in arriving at an approximate cost for labour and materials. 

• 10m2 to 20m2 – approximately $4000
• 20m2 to 30m2 – approximately $7000
• 30m2 to 40mx – approximately $9000

Additional costs can include demolition of the existing area, wood or steel railings, and concrete and digging. The size of the composite deck boards and transportation of such are other factors that can increase the price.

Depending on your location in Australia, prices may vary. Each state has its own set of requirements for deck building. Know the license regulations before considering bids.

• New South Wales – requires a licensed contractor for jobs exceeding $1,000
• Victoria – Building practitioners are necessary for jobs exceeding $5,000
• Queensland – building permit for deck building exceeding $3,300
• South Australia – All deck building requires onsite Building Supervisor
• Western Australia – All deck building must be supervised by a Building Contractor
• Tasmania – Builder or Construction Manager must carry a building permit and proof of insurance
• Australian Capital Territory – The ACT Planning and Land Authority (ACTPLA), controls what type of contractor can build decks with specific licensing
• Northern Territory – BCA standards must be met in addition to holding a Building Contractor license

There are also certain standards set by the National Construction Code (NCC) for all of Australia. These were created to limit the number of deaths that were occurring from structural failure of decks. 

When preparing to hire a composite deck builder, follow these guidelines:

• Ask to see licensing in your particular state
• Make sure insurance is up-to-date
• Get a list of references
• Get quotes from 3 contractors

There are steps you can take to save money when hiring a composite deck to be built. These can include:

• Clearing the site of debris
• Have a simple solid plan in place
• Resist making changes
• Ask the contractor for suggestions

 

* The cost data is based on Oneflare and third-party sources