Devizes · Wiltshire
Underpinning in Devizes
Underpinning a house in Devizes starts with proof that it is needed, not with a digger. An independent engineer looks at the monitoring and ground investigation, then chooses between mass concrete, beam-and-base or mini-piles for that particular wall and soil.
Guide price from£1,050per metre of wall inc VAT
- Postcodes
- SN10
- Population
- about 17,000
- Area
- Wiltshire
- Pricing region
- South West
How do local ground conditions affect underpinning in Devizes?
Devizes (SN10) has around 17,000 residents and sits in Wiltshire. If you are just outside Devizes, we also cover Calne (6 miles), Melksham (6 miles) and Chippenham (9 miles).
Wiltshire has a mix of ground, with clay in some places and firmer rock in others. Ground movement here is more often linked to soils, drains and trees than to mining. Typical buildings in Wiltshire: Stone cottages, railway terraces in Swindon, and large post-war and new-build estates.
Signs you may need underpinning
- A large tree nearby that cannot be removed or reduced
- Floors sloping noticeably towards one external wall
- Footings found to be very shallow during a trial pit
How much will underpinning cost in Devizes?
These are guide prices for Devizes, using South West rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| Item | Guide price | Per |
|---|---|---|
| Mass-concrete underpinning | £1,050 – £1,550 | per metre of wall |
| Beam-and-base underpinning | £1,550 – £2,600 | per metre of wall |
| Mini-piled underpinning | £2,050 – £3,600 | per metre of wall |
| Engineer's design and building control feesest. | £825 – £2,600 | per scheme |
Which repair method suits a home in Devizes?
Beam-and-base underpinning
A reinforced concrete beam is cast beneath or alongside the existing footing and carries the wall onto mass concrete bases at intervals. It spreads load well across variable ground and can mean less digging than continuous underpinning along the whole wall.
Best for: Longer runs of wall or heavier loads over variable ground
Mini-piled underpinning
Small-diameter piles are driven or bored down to firm ground and linked by a reinforced beam or needles that pick up the wall. Compact rigs fit through narrow access, and the method reaches depths that would be impractical to excavate by hand.
Best for: Deep soft ground, tree roots, or restricted access
What happens when we carry out underpinning in Devizes?
Design and approvals
The engineer produces drawings and calculations. We make the building control or building warrant application, and party wall notices are served where the law requires them, before any digging starts.
Excavation and concrete
Work runs in the sequence the engineer sets so the wall is never left unsupported over a long length. Building control inspects the excavations before concrete goes in, and each section is dry-packed tight to the footing above.
Crack repairs and handover
Once the new foundation has cured, cracks are stitched and repointed, inside walls are made good, and paths or patios disturbed by the dig are reinstated. You receive the building control completion paperwork for your records.
Rules for underpinning in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Underpinning in Devizes: questions and answers
How much will underpinning cost in Devizes?
Guide prices for underpinning in Devizes start from about £1,050 per metre of wall, including VAT, on South West rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Devizes?
We do. Devizes and the surrounding area are covered, including nearby Calne and Melksham. A free initial assessment from your photos is the first step.
Is the ground in Wiltshire prone to subsidence?
Southern Wiltshire is chalk, while the north around Swindon, Chippenham and Trowbridge sits on Oxford and Kimmeridge Clays that are prone to seasonal movement near trees. Bath stone was mined underground around Corsham. Only an investigation can say why a particular building has moved.
Can I stay in my house during underpinning?
Most people stay at home during external underpinning, because the digging happens outside along the wall. Expect noise, restricted access to that side of the house and some dust. If the work has to be done from inside, through the floor, moving out for part of the job is sometimes advised.
Does my house really need underpinning?
Often not, because most subsidence is fixed by repairing drains or managing trees and then repairing the cracks. Underpinning is justified when monitoring shows movement continuing after the cause has been dealt with, or when the ground itself is unsuitable. An independent engineer should make that call.
Other structural repairs in Devizes
- Subsidence insurance claim repairs
- Bowing wall repairs
- Concrete repairs
- Wall tie replacement
- Retaining wall repairs
Underpinning near Devizes
Call or send photos about your Devizes property, and we will explain the likely method, the approvals involved and a guide price before anything is booked.