Decking Cost Sydney
What Sydney homeowners typically pay for timber and composite decking, including subframe, balustrades, and extras.
Decking Cost by Type
| Decking Type | Installed Cost | Notes |
|---|---|---|
| Treated Pine | $320 - $450/m² | Budget-friendly, needs regular oiling/staining, 15-20 yr lifespan |
| Hardwood (Merbau) | $400 - $650/m² | Popular choice, durable, rich colour, needs annual oiling |
| Hardwood (Spotted Gum) | $450 - $700/m² | Australian native, extremely durable, beautiful grain |
| Blackbutt Hardwood | $420 - $650/m² | Fire-resistant (BAL rating), light colour, strong |
| Composite Decking | $400 - $700/m² | Low maintenance, no oiling, 25-year warranty, higher upfront cost |
| Modular/DIY Tiles | $150 - $300/m² | Quick install over concrete, limited to flat surfaces |
Additional & Extra Costs
Factors Affecting Decking Costs
Deck size is the primary cost driver — economies of scale apply, with larger decks costing less per m².
Elevated decks on sloping sites need more extensive subframe work, adding $80-$150/m².
Timber choice has the biggest impact on per-m² pricing — treated pine is half the cost of spotted gum.
Steel subframes cost more upfront but last longer, do not warp, and are termite-proof.
Complex shapes (curved edges, multi-level) increase labour costs by 15-25%.
Coastal locations may require stainless steel fixings and marine-grade treatments.
How to Save Money
Use treated pine for the subframe and premium timber only for the visible deck boards.
Choose a simple rectangular design to minimise cuts and waste.
Consider composite for long-term savings — no oiling or staining costs over 25+ years.
Build during autumn/winter when deck builders tend to have more availability.
Skip built-in features initially and add furniture instead of built-in seating.
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Frequently Asked Questions
Disclaimer: All costs are indicative only and based on typical Sydney market rates as of 2024. Actual prices vary based on site conditions, timber species, deck height, and project complexity. Always obtain multiple written quotes for your specific project.
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