Melksham · Wiltshire
Underpinning in Melksham
Before any underpinning goes ahead on a Melksham property, building control has to approve the design and inspect the excavations. Where the wall is shared, party wall notices may be needed too in England and Wales, so allow time for paperwork before the dig.
Guide price from£1,050per metre of wall inc VAT
- Postcodes
- SN12
- Population
- about 19,000
- Area
- Wiltshire
- Pricing region
- South West
What should you know about the ground under Melksham?
Melksham is in Wiltshire and takes in postcode districts SN12. About 19,000 people live there. Nearby, we also cover Trowbridge (5 miles), Chippenham (6 miles) and Devizes (6 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. Housing stock in Wiltshire: Stone cottages, railway terraces in Swindon, and large post-war and new-build estates.
What happens during underpinning, step by step?
Fixed written price
With the design in hand we confirm a fixed price in writing, setting out the method, the length of wall, access arrangements and the making good. For insurance work we can price to the loss adjuster’s or engineer’s schedule.
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.
What to look for before calling about underpinning
- Cracks that keep widening after the drains have been repaired
- One corner of the house visibly lower than the others
- A large tree nearby that cannot be removed or reduced
Underpinning prices in Melksham
Guide prices below are for homes in Melksham, on South West rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| 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 |
How we usually approach underpinning
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
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.
Questions about underpinning in Melksham
What is the price of underpinning in Melksham?
Guide prices for underpinning in Melksham 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 carry out underpinning in Melksham?
We do. Melksham and the surrounding area are covered, including nearby Trowbridge and Chippenham. A free initial assessment from your photos is the first step.
Does the ground around Melksham cause cracking?
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.
Does underpinning need building control approval?
Yes, underpinning is building work and needs approval and inspections in England and Wales, a building warrant in Scotland, and council building control in Northern Ireland. Inspectors usually check the excavations before concrete is poured. We deal with building control as part of the job.
Will underpinning affect selling my house?
It needs explaining to buyers, but a properly documented scheme is far better than unresolved movement. Keep the engineer’s design, the building control completion certificate and any insurance paperwork. Lenders and surveyors will usually ask for these before agreeing a sale.
More repairs we carry out in Melksham
- Extension pulling away repairs
- Brick arch repairs
- Structural surveys and crack monitoring
- Floor joist repairs
- Subsidence insurance claim repairs
Underpinning near Melksham
Start with photos and a short description of the movement at your Melksham property; we will reply with a free initial assessment and the next step.