PRICE GUIDE · TRADES & CONSTRUCTION · 2026–2027
Concrete & Foundations Specialist cost in the UK
£2,000–£15,000 per project. Typically £7,000.
Foundations for a UK home project cost £2,000–£15,000, with about £7,000 typical for a rear extension. The type of foundation, the ground conditions, the depth building control asks for and how easily a digger can reach the site set the price.
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HOW MUCH IT COSTS
How much does a concrete & foundations specialist cost in the UK?
| Low end | £2,000 | a garage or porch base on good ground |
|---|---|---|
| Typical | £7,000 | what most people pay |
| High end | £15,000 | a raft or deep foundations on poor ground |
Locufy guide prices for 2026–2027. Updated 2026. A national range, not a quote — enter your town above for real prices from the builders and trades near you.
What moves the price
- Type of foundation — strip and trench-fill foundations cost less than a raft or piles on poor ground
- Ground conditions — clay, made ground and nearby trees can mean deeper concrete foundations than planned
- Size of the structure — a porch base is a small pour next to the foundations for a two-storey extension
- Access for plant — a mini-digger and concrete pump cost more where the site is through a house or down steps
- Spoil removal — muck-away by grab lorry or skip is a large part of any foundations bill
- Drains in the way — diverting or bridging a drain under new foundations adds cost and needs approval
Building and repair prices in the UK are up 6% over five years (ONS Consumer Price Inflation, Services for maintenance and repair, to 2026 August). Five years ago a typical concrete & foundations specialist would have cost about £6630 — an estimate from today's guide price and that index, not a recorded price. Source: ONS MM23 D7DO →
WHAT YOU GET
What a concrete & foundations specialist booking includes
Takes: A few days for a porch or garage, one to two weeks for an extension, more for piling. Not included: Structural engineer's design, building control fees, drainage diversions and the walls or slab above the foundations are usually extra — see the related guides below.
WHAT PEOPLE BOOK
Common concrete foundation jobs
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Concrete & Foundations Specialist near you, with prices shown
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How to pay less
- Get a soil investigation done early so the foundation design suits the ground and is not changed mid-dig
- Clear access for a mini-digger and concrete lorry, which cuts days of hand digging the foundations
- Plan the extension's footprint to avoid existing drains so no diversion is needed under the foundations
Before you book
- New foundations need building regulations approval and an inspection before the concrete is poured
- Digging foundations within a few metres of a neighbour's building may need a party wall notice
- Building over or near a public sewer needs the water company's agreement before work starts
- Ask whether the foundations quote includes muck-away, concrete and any reinforcement the engineer specifies
Concrete & Foundations Specialist cost: questions people ask
£2,000–£15,000 per project, about £7,000 typical for a rear extension. A garage or porch base costs least; a raft or deep foundation on poor ground costs most.
A few days for a porch or garage base and one to two weeks for an extension, with a building control inspection before the pour.
Yes. Under the Building Regulations the trenches must be inspected before concrete is poured, so the contractor books the visit as soon as they are dug.
On clay, made ground or near trees the engineer may ask for deeper footings, a raft or piles. Each costs more than standard strip foundations.
The engineer's design, building control fees, drain diversions and everything built on top of the foundations are separate.
They are Locufy guide prices for the UK, read from published UK foundation cost guides — a national range, not a quote. Ground conditions and access decide your price.