Melksham · Wiltshire
Subsidence repairs in Melksham
Cracks in a house in Melksham are not always subsidence, and subsidence is not always serious. The first job is to find out what is moving and why, whether that is a leaking drain, a nearby tree or soft ground under shallow footings.
Guide price from£2,600per property inc VAT

- Postcodes
- SN12
- Population
- about 19,000
- Area
- Wiltshire
- Pricing region
- South West
Is Wiltshire prone to ground movement?
We cover Melksham and its postcode districts SN12, part of Wiltshire, with a population of roughly 19,000. 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. What you mostly find across Wiltshire: stone cottages, railway terraces in Swindon, and large post-war and new-build estates.
What happens when we carry out subsidence repairs in Melksham?
Find the cause
An independent chartered structural engineer inspects the house and, where needed, arranges a drain survey, trial pits or soil tests. We can arrange the engineer. The aim is to know what is moving, and why, before money goes on repairs.
Written quote
We price the agreed repair and confirm a fixed price in writing once it is specified. If there is an insurance claim, we can price to the loss adjuster’s or engineer’s schedule instead of our own scope.
Repairs and making good
Cracks are stitched and repointed outside, plaster is renewed along the crack lines inside, and sticking doors are eased. Where the work needs it, we deal with building control and hand over the paperwork.
Signs you may need subsidence repairs
- Diagonal cracks wider at the top, running from window or door corners
- Doors and windows that start to stick or no longer close
- Cracks that open in summer and partly close again in winter
How much will subsidence repairs cost in Melksham?
Prices in Melksham are worked out on South West rates. They include VAT and are a starting point: access, the extent of the damage and whether an engineer or building control is involved all move the figure.
| Item | Guide price | Per |
|---|---|---|
| Structural engineer's investigation and report | £515 – £2,050 | per property |
| CCTV drain survey (common first check) | £155 – £360 | per survey |
| Typical repair once the cause is dealt with: crack stitching and making goodest. | £2,600 – £12,400 | per property |
| Foundation strengthening where it is needed (see underpinning) | £1,050 – £3,600 | per metre of wall |
Which repair method suits a home in Melksham?
Crack stitching and making good
Once movement has stopped, cracked brickwork is cut along the bed joints, stainless helical bars are bonded in to tie the wall together, and the joints are repointed to match. Inside, plaster is renewed along the crack line before redecoration.
Best for: Category 1 to 3 cracking in walls that are otherwise sound
Remove the cause, then repair
Most subsidence is dealt with this way. The drain is repaired or the vegetation managed, the house is watched to confirm it has stabilised, and then the cracks are stitched, repointed and made good inside. It is the least disruptive route and usually the cheapest.
Best for: Clay movement or drain leaks where the cause can be removed
Rules for subsidence repairs 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.
Subsidence repairs in Melksham: questions and answers
How much will subsidence repairs cost in Melksham?
Guide prices for subsidence repairs in Melksham start from about £2,600 per property, 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 Melksham?
Yes, Melksham is covered, along with postcode districts SN12. We also cover nearby Trowbridge and Chippenham.
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.
How do I know if cracks are subsidence?
Subsidence cracks are usually tapered, run diagonally from door and window corners, and show on both faces of the wall. Fine vertical cracks in new plaster are more often shrinkage. An engineer’s inspection, sometimes with monitoring, is the reliable way to tell.
How long should I wait before repairing subsidence cracks?
Usually until the cause has been dealt with and the engineer is satisfied that movement has stopped. On clay that can mean watching the house through a summer and a winter. Repairing too early risks the same cracks opening again.
Other structural repairs in Melksham
- Roof structure repairs
- Bay window subsidence repairs
- Resin injection ground stabilisation
- Concrete repairs
- Underpinning
Subsidence repairs near Melksham
If your insurer is already involved, send us the loss adjuster’s schedule for your Melksham property and we will price the repairs to it in writing.