How much does deck building & repair cost in United Kingdom?
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Key takeaways
- Most deck building & repair jobs in United Kingdom land between £200–£14,000 — known locally as garden decking.
- Decking under 30cm high and covering less than 50% of the garden is usually permitted development in England; raised decks may need planning permission and, if structurally significant, Building Regulations sign-off. No trade licence exists for deck installers, so vet via reviews and insurance.
- Prices below are researched national ranges, updated July 2026 — not quotes.
Deck Building & Repair prices by job size in United Kingdom
| Job size | Low | Typical | High |
|---|---|---|---|
| Repair and re-oil Replace a few boards, re-fix wobbly balustrade, sand and re-oil | £200 | £500 | £900 |
| Small softwood deck (15m²) Ground-level treated softwood deck on a timber sub-frame | £1,500 | £3,000 | £5,000 |
| Large or composite deck 30m²+ raised deck in composite with balustrade and steps | £5,000 | £8,500 | £14,000 |
Per-unit rates
| Unit | Low | Typical | High |
|---|---|---|---|
| per m² (softwood, installed) | £120 | £200 | £320 |
What affects the price
- Job size and scope — bigger or more complex jobs move you up the ranges above.
- Access and condition — hard-to-reach areas, older properties or neglected maintenance add labour time.
- Materials and quality level — where materials are involved, the grade you choose often matters more than labour.
- Urgency — same-day or out-of-hours work usually carries a premium.
- Where you live — large metros in United Kingdom typically run above the national range; smaller towns below it.
How to save
- Get at least three quotes and compare like-for-like scopes, not just totals.
- Be flexible on timing — off-peak slots are often cheaper.
- Bundle related tasks into one visit to spread call-out costs.
- Agree the scope in writing up front to avoid change-order surprises.
How to hire a deck building & repair pro in United Kingdom
- Find a decking installer or landscaper with reviews on Checkatrade, MyBuilder or TrustMark
- Check whether planning permission applies — decking more than 30cm above ground or covering over half the garden falls outside permitted development
- Ask for public liability insurance (£1m+ typical)
- Confirm the sub-frame spec: treated C16/C24 joists, joist spacing, and post footing detail
- Get board type in writing (softwood, hardwood, composite) with the exact product name
- Agree waste removal and whether old decking disposal is included
Red flags
- Lays joists directly on soil or grass without pads, posts or a membrane
- Quotes without visiting the garden to check levels and drainage
- No mention of the 30cm planning threshold on a raised design
- Cash-only, no written quote
- Uses untreated timber for the frame
How Handld researches prices
These are researched estimates, not quotes and not our transaction data. We compile ranges from published sources — national statistics, trade bodies and incumbent cost guides — normalise them to GBP, and adjust city pages by a population-based cost tier. Last updated July 2026. Basis: Checkatrade decking cost guide; MyBuilder job estimates.
Frequently asked questions
How often should a timber deck be stained or oiled?
Every 12-24 months for oil finishes and 2-4 years for film-forming stains, depending on sun exposure. Re-coating on schedule is the single biggest factor in how long the boards last.
How much does it cost to build a deck?
Deck cost is driven by area, height off the ground, and material. Ground-level softwood decks are the cheapest; elevated decks need engineered footings and balustrades, and composite or hardwood boards can double the board cost. Most quotes are priced per square metre or square foot, with stairs, balustrades and lighting as line items.
Can an old deck be repaired instead of replaced?
If the frame (joists, bearers, posts) is sound, boards and balustrades can be replaced individually and the structure re-stained for a fraction of a rebuild. If posts are rotting at the base or the ledger connection to the house is corroded, replacement is usually safer and not much more expensive than piecemeal repair.
What deck size do most homeowners build?
The most common residential decks fall between 12-25 m² (130-270 sq ft) — enough for a table, chairs and a grill. Costs do not scale perfectly with area: small decks carry fixed costs (access, footings, delivery), so price per square metre drops as size grows.
How long does a deck build take?
A simple ground-level deck takes 2-4 days. An elevated deck with footings, stairs and balustrades typically takes 1-2 weeks, plus any permit or inspection lead time before work can start.
What should a deck quote include?
A complete quote lists demolition/removal of any old structure, footings, framing timber and spans, board type and grade, fixings (hidden vs face-screwed), balustrades, stairs, waste removal, and whether permit fees and engineering are included. Missing line items are where cheap quotes grow.
When is the best time of year to build decking in the UK?
Spring and early autumn — installers are cheapest and most available outside the May-July rush, and timber should not be oiled or stained in frost or on wet boards. Winter builds are possible but ground conditions slow footing work.
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