When it comes to building your dream deck in Sydney, one of the biggest decisions you’ll face is choosing between timber and composite decking materials. Both options have distinct advantages, and understanding the cost differences can help you make the right choice for your budget and lifestyle.
At 5 Star Decking, we’ve built hundreds of decks across Sydney using both materials. Here’s what you need to know about costs, durability, and long-term value.
Timber Decking Costs in Sydney 2026
Timber remains the most popular choice for Sydney homeowners, offering natural beauty and that classic outdoor aesthetic. The cost varies significantly depending on the timber species you choose.
Softwood (Pine)
Material cost: $35–$50 per square metre
Installation: $150–$200 per square metre
Total per m²: $185–$250
Pine decking is budget-friendly and readily available. However, it requires regular maintenance — oiling every 12–18 months to prevent weathering and splinting. This hidden cost adds up over time.
Hardwood (Merbau, Spotted Gum, Blackbutt)
Material cost: $80–$140 per square metre
Installation: $180–$250 per square metre
Total per m²: $260–$390
Premium hardwoods offer superior durability and natural colour variation. They’re naturally resistant to decay and insects. Merbau is particularly prized for its rich chocolate tones and longevity — a properly maintained hardwood deck can last 15–20+ years.
Composite Decking Costs in Sydney 2026
Composite decking — made from wood fibres and plastic polymer — has grown significantly in popularity over the past five years. While the upfront cost is higher, the long-term savings can be substantial.
Standard Composite (Modwood, Trex)
Material cost: $90–$150 per square metre
Installation: $200–$280 per square metre
Total per m²: $290–$430
Mid-range composites offer excellent value. They require minimal maintenance — no oiling, staining, or sealing. A simple wash with water annually keeps them looking pristine. Lifespan: 20–25 years.
Premium Composite (Evalast Pioneer, Millboard)
Material cost: $150–$200 per square metre
Installation: $220–$300 per square metre
Total per m²: $370–$500
Premium composites are virtually maintenance-free and designed to resist fading, staining, and mould. Evalast Pioneer, for example, features a GFR core with a P4 slip rating — perfect for pool decks and high-traffic areas. Expected lifespan: 25–30 years.
Total Project Cost Examples
Let’s look at a typical 30 square metre deck project:
- Pine timber: $5,550–$7,500 (plus ongoing maintenance)
- Hardwood (Merbau): $7,800–$11,700
- Standard composite: $8,700–$12,900
- Premium composite: $11,100–$15,000
The Hidden Costs of Timber
When comparing materials, don’t forget the long-term maintenance costs of timber:
- Decking oil: $400–$800 per application
- Maintenance visits: Every 12–18 months (labour + materials)
- Repairs: Weathering, rot, and splinter repairs over 10 years
- Eventual replacement: After 10–15 years
A pine deck that costs $5,550 upfront could easily cost an additional $5,000–$8,000 in maintenance over 10 years. That changes the total cost equation significantly.
Why Choose Composite in 2026?
While composite decking has a higher initial cost, the lifecycle economics make it increasingly attractive:
- Zero maintenance: No oiling, staining, or seasonal repairs
- Durability: Premium composites outlast timber by 10+ years
- Aesthetics: Colour remains vibrant without fading
- Safety: Slip-resistant surface ideal for pool areas
- Sustainability: Made from recycled wood and plastic
Our Recommendation
We typically recommend composite decking for Sydney clients who value their time and want a maintenance-free outdoor space. If you love the natural look of timber and are committed to regular maintenance, premium hardwoods like merbau or spotted gum offer beautiful results.
The choice ultimately depends on your budget, lifestyle, and long-term vision for your outdoor space.
Get Your Custom Quote Today
Every deck project is unique. Whether you’re leaning toward timber, composite, or a hybrid approach, our team at 5 Star Decking can provide a detailed cost breakdown tailored to your property.
Call us on 0433 334 415 or get a free quote today. We’ll walk you through material options, costs, and timelines — no obligation.
5 Star Decking: Premium decking solutions across Sydney. Timber • Composite • Balustrades • 2-Year Guarantee
