Garden Decking Replacement Cost Guide

Replacing a tired garden deck can be a bigger job than many homeowners expect: once you factor in ripping out the old boards, dealing with rot, and choosing between timber and composite, the bill can move quickly. If you’re budgeting for a full decking replacement, here’s what UK prices usually look like.

How much does garden decking replacement cost in the UK?

Most UK homeowners can expect to pay £1,200–4,500 to replace a standard garden deck, including removal of the old structure, materials, and labour. Small straightforward timber decks can come in at £800–1,800, while larger composite replacements or awkward access jobs can reach £5,000–8,000+.

The final price depends heavily on whether the existing subframe can be reused, how much waste needs clearing, and whether the new deck is a simple rectangle or something that wraps around steps, curves, or a raised patio edge. In many cases, the old deck is less expensive to remove than to repair piece by piece, especially if it has hidden decay.

For homeowners comparing Cost Guides across outdoor projects, decking replacement often sits somewhere between simple fencing work and larger Patios & Paving jobs in terms of disruption. If your garden also needs tidying before work starts, a related Garden clearance cost in the UK: 2026 price guide may help you budget for waste removal and site preparation.

What affects the cost of replacing an old garden deck?

The biggest cost driver is size. A compact 8m² deck for a small terrace may only need a basic tear-out and refit, while a 25m² family deck with railings, steps, and built-in seating can quickly double the labour and material spend. Contractors usually price decking by area, but they’ll also adjust for complexity, height, and access.

Material choice makes a major difference. Pressure-treated softwood is usually the cheapest option, while hardwood sits higher up the price scale. Composite boards cost more upfront, but many homeowners choose them because they want a lower-maintenance finish that won’t need regular staining. In practice, the “best” material often depends on whether the deck is in a shaded, damp spot or exposed to full sun and weather.

Access is another factor that catches people out. If the deck sits at the end of a long narrow garden, or the property has limited side access, the contractor may need more time to carry materials and waste through the house or via hand loading. That can add £150–500 to the job, and sometimes more if a skip can’t be positioned conveniently.

Condition of the existing structure also matters. If only the boards are failing but the joists and posts are sound, a partial strip-and-redeck can be cheaper. But if the frame has soft spots, movement, or rusted fixings, a full replacement is usually the safer option. Many installers will insist on replacing the subframe if they find long-term rot, because reusing a weak base can lead to callbacks later.

Extra features add cost fast: new balustrades, lighting, anti-slip edging, planter integration, or steps down into the lawn. A deck that doubles as a transition zone between the house and Garden Buildings such as a summerhouse or office pod may need careful levelling and cleaner finishing to keep the area usable all year round.

Typical price breakdown by decking type and material

For a typical full replacement, softwood decking is usually the most budget-friendly option. Expect around £1,200–2,800 for a small-to-medium deck including removal, with larger or more complex layouts rising to £3,500–4,500. Softwood is popular for families who want a smart, practical finish without paying premium prices.

Hardwood decking often starts around £2,000–3,500 for smaller replacements and can move to £4,500–6,500 for larger installations. It suits homeowners who want a more natural, premium appearance and are happy to pay for the higher material cost. A contractor may also allow extra time for cutting and fixing hardwood boards, which are denser and more labour-intensive.

Composite decking usually comes in at about £2,500–4,500 for a modest replacement and £5,000–8,000+ for larger areas. The higher price reflects the material itself, but many customers choose composite during a replacement because it reduces the long-term upkeep burden. If your old timber deck has repeatedly needed repairs after wet winters, composite can be a sensible upgrade rather than a like-for-like swap.

As a rough guide, a straightforward project might look like this:

• Small softwood replacement: £800–1,800
• Medium softwood replacement: £1,500–3,000
• Medium composite replacement: £2,800–5,000
• Large composite replacement with steps/rails: £5,000–8,000+

There can also be separate charges for disposal, especially if the old deck is heavy, treated, or broken into lots of awkward pieces. If the removal includes other outdoor waste such as old sleepers, broken paving, or leftover timbers from a previous project, contractors may treat it more like general Garden Services clearance than a simple decking strip-out.

How much does labour cost for decking replacement?

Labour for decking replacement in the UK often falls between £250–450 per day per carpenter or installer, with many small jobs taking 1–3 days and larger jobs 3–7 days or more. For a complete tear-out and replacement, labour may account for £500–2,500 of the total bill depending on scale and access.

A simple ground-level deck in good condition is usually quicker to replace than a raised deck with posts, concrete footings, and balustrades. Contractors may also charge more if they need to check levels carefully, rebuild part of the frame, or work around drainage issues. In older gardens, hidden problems such as soft soil, old fixings, or uneven foundations can turn a “straightforward” replacement into a slightly more technical job.

Removal of the existing deck is often priced separately or built into the quote as a line item. You might see £150–500 for small removal work, but a large or badly deteriorated structure can cost £500–1,000+ to dismantle and dispose of. If the contractor has to cut everything into smaller sections for access, the price can climb further.

If your old deck borders a lawn, greenhouse, or side return, there may be additional protection and preparation time to avoid damaging nearby surfaces. That is one reason experienced installers often ask for photos before quoting: a deck that looks like a quick replacement from the patio doors can be much harder once they see the route for materials and waste.

For comparison with other outdoor demolition jobs, homeowners often find Garden shed removal cost in the UK useful because the same kinds of access and disposal issues can affect the final price.

How to save money and get the best value on a decking replacement

The best way to control cost is to decide early whether you need a like-for-like replacement or a redesign. If the current footprint works well, reusing the same layout usually keeps labour down. Changing the shape, adding steps, or extending the deck around seating areas will add time and material costs.

Choosing the right material for the space can also save money over the long term. Timber is cheaper to install, but it usually needs periodic staining or sealing. Composite may cost more initially, but for busy households, rental properties, or shaded gardens that stay damp, the reduced maintenance can justify the higher price.

Getting the site ready before the contractor arrives can make a real difference. Clear away pots, furniture, stored timber, and access obstructions so the team can move boards and waste more efficiently. If the area is crowded with old planters, broken edging, or leftover materials from previous Garden Clearance work, removing those first can reduce labour time.

It’s also worth asking for itemised quotes. A good quote should separate removal, waste disposal, subframe repairs, board supply, fittings, and finishing. That makes it easier to compare installers fairly, especially if one quote includes disposal and another leaves it as an extra. Be cautious of very low prices that don’t mention the frame or waste, because those are often the parts that become expensive once work starts.

If you’re improving the wider outdoor space at the same time, bundling jobs can be efficient. For example, some homeowners replace a deck alongside fencing, edging, or a small patio refresh so the contractor only needs one mobilisation charge. That approach can work well if you’re already planning related Garden Services or seasonal upgrades.

Finally, factor in the life expectancy of the new deck. A cheaper timber replacement may be fine if you plan to move soon, but a higher-quality composite or hardwood option can be better value if this is your long-term home and the deck gets heavy use in summer.

To keep your decking replacement on budget, always get at least three detailed quotes, check that removal and disposal are included, and ask whether the contractor will inspect the subframe before pricing. Look for clear experience with decking, good reviews, and a willingness to explain material choices, access challenges, and any extra work they spot before they start.