Decking costs in the UK range from £80 to £200 per square metre installed. A typical 15m² deck costs £1,200 to £3,000 for DIY or £2,000 to £5,000 professionally installed.

Timber Decking Costs

Softwood: £80-120 per m² installed. The most affordable option. Lifespan 10-15 years with annual treatment. Hardwood: £150-250 per m² installed. Beautiful and lasts 25-40 years.

Composite Decking Costs

Composite boards cost £120-200 per m² installed. No annual treatment needed, slip-resistant, and lifespan of 25-30 years.

Hidden Costs

Foundations add £300-800. Balustrades cost £50-150 per metre. Steps add £200-500 per flight. Lighting costs £200-400.

🏠 Is your roof in good shape? Before investing in decking, check your roof is watertight. Water damage near deck areas is common. See roof repair warning signs.

🏠 Part of a bigger garden project? If you're improving the whole outdoor space, our garden tools guide covers everything from mowers to power washers.