Decking creates a warm, characterful outdoor room that's perfect for entertaining. If you're planning a new deck in Hampshire, here's a clear 2026 guide to what composite and timber decking cost, and what affects the price.
How much does decking cost per m²?
As a guide, installed decking costs around £170 per m² for composite and £125 per m² for timber, including the sub-frame, boards, fixings and finishing. Composite costs more upfront but is far lower maintenance over its life.
| Deck size | Composite (≈£170/m²) | Timber (≈£125/m²) |
|---|---|---|
| Small (15 m²) | £2,500 – £3,500 | £2,000 – £2,800 |
| Medium (25 m²) | £4,000 – £5,500 | £3,000 – £4,200 |
| Large (40 m²) | £6,500 – £8,500 | £5,000 – £6,500 |
Composite vs timber decking
Composite decking
Composite boards are made from recycled wood and plastic. They're splinter-free, won't rot, warp or fade, and need no annual staining — just an occasional wash. That low maintenance and long life makes composite our most popular choice, especially for families. You can see a superb example in our recent composite decking project in Fleet.
Timber decking
Natural timber is warmer and more affordable upfront, with a classic look. The trade-off is maintenance — timber needs periodic cleaning, treating and occasional board replacement to stay at its best. For a striking hardwood example, see our waterside cedar deck in Frimley.
Want an accurate price for your project?
Use our free 60-second Instant Estimator for a ballpark, or book a no-obligation survey for a fixed quote.
Get an Instant EstimateWhat affects the cost of decking?
- Height and structure — a raised deck needs more sub-frame and often balustrades, adding cost.
- Groundworks — clearing old decking or levelling sloped ground takes extra time.
- Board choice — premium composite ranges and hardwoods cost more than entry-level options.
- Extras — steps, integrated lighting, pergolas and screening all add to the finished project.
Decking built across Hampshire, Surrey & Berkshire
From compact garden decks to large entertaining terraces, Spruce Brothers build both composite and timber decking to a high standard, backed by our money-back promise. Book your free survey for a fixed quote.