Decking Cost Calculator

How Much Does Decking Cost?

Decking costs depend on the material you choose, the deck size, foundation requirements, and whether you build it yourself or hire a professional. This guide breaks down every cost so you can budget your project confidently.

Cost by Material Type

Total material cost includes the subframe (joists, bearers), foundation blocks, fixings, weed membrane, and fascia. Board cost alone is misleading because the subframe and fixings add 40-60% on top.

Full Project Cost by Deck Size

DIY vs Professional Cost Breakdown

DIY decking saves EUR 50-100 per m2 in labour. A 15 m2 deck saves EUR 750-1500 by doing it yourself. The trade-off is time — expect a DIY build to take a full weekend for a medium deck, versus one day for a professional team.

Softwood vs Composite: 15-Year Cost of Ownership

The upfront saving of softwood disappears within 5-7 years of annual maintenance. If you factor in the time spent sanding, oiling, and replacing boards, composite becomes even more attractive. The break-even point is typically around year 6-8.

Cost per m2 Quick Reference

For fast budgeting, use these all-in rates:

Multiply your deck area in m2 by these rates for a quick estimate. Then use our decking calculator for a precise materials list.

Extra Costs to Plan For

1. Steps — Each step costs EUR 50-120 in materials (or EUR 120-250 installed) depending on width and material
2. Railing or balustrade — EUR 40-100 per linear metre for timber, EUR 80-200 for glass or metal
3. Built-in seating — EUR 100-300 per bench, depending on length and design
4. Lighting — Recessed deck lights cost EUR 5-15 each, plus EUR 50-100 for a transformer and cabling
5. Building regulations — Decks over 300mm above ground level may require building control notification in some jurisdictions, with fees of EUR 200-400
6. Old deck removal — EUR 10-20 per m2 DIY, EUR 25-45 per m2 professional