Decking Cost Calculator
Estimate the cost of a new garden deck, softwood, hardwood or composite, by area, with balustrade and groundwork add-ons and a typical price range.
Estimate only. This is an indicative estimate, not a quote, always get quotes from local landscapers or joiners before committing to a project. Prices vary by region, ground conditions, deck height and access.
Enter your deck area
Your estimated decking cost and full breakdown appear here as you fill in the form.
How decking costs are estimated
Decking cost is priced per square metre and driven mainly by the board material: softwood is the cheapest option but needs regular re-treating; composite costs more up front but needs very little maintenance; hardwood typically costs the most and offers the longest lifespan. The rate already includes the frame, joists, fixings and fitting labour, not just the boards. On top of that, you can add a balustrade or handrail, priced per linear metre of run, and groundwork such as levelling, a membrane and a sub-base, priced per square metre of deck area. Because ground conditions, deck height and access vary from job to job, we show a typical range (±15%) alongside the headline estimate, always get quotes from local landscapers or joiners before committing to a project.
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