Keynsham · Somerset
Subsidence repairs in Keynsham
If doors have started sticking in your Keynsham home and new cracks have appeared, it is worth acting before they widen. We can look at photos first and tell you whether an engineer, a drain survey or your insurer should be the next call.
Guide price from£2,600per property inc VAT
- Postcodes
- BS31
- Population
- about 20,000
- Area
- Somerset
- Pricing region
- South West
Why does the ground in Somerset matter for subsidence repairs?
We cover Keynsham and its postcode districts BS31, part of Somerset, with a population of roughly 20,000. If you are just outside Keynsham, we also cover Kingswood (3 miles), Bath (6 miles) and Yate (9 miles).
Clay soils are found in parts of Somerset. Parts of Somerset lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Across Somerset, most homes are Bath stone Georgian terraces, Victorian houses in Taunton and Weston-super-Mare, and post-war estates.
Symptoms that point to subsidence repairs
- Diagonal cracks wider at the top, running from window or door corners
- Fresh cracks showing on both the inside and outside of one wall
- A gap opening between the skirting board and the floor
Guide prices for subsidence repairs in Keynsham
For Keynsham we use South West rates. Treat the table as a budget guide, inc VAT; the price you pay is the one on your written quote.
| 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 |
Methods for subsidence repairs
Foundation strengthening
Where the ground cannot be made stable, the load is carried down to firmer soil by underpinning, a beam-and-base scheme, mini-piles or resin injection, depending on the soil and access. It is designed by an engineer and is the exception, not the rule.
Best for: Ongoing movement where removing the cause has not worked
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
From first photo to finished repair
Deal with the cause
Drains are repaired, vegetation is managed on the engineer’s advice, or a foundation scheme is designed if nothing else will work. Where monitoring is recommended, readings run for several months to show the movement has stopped.
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.
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.
Frequently asked questions
How much will subsidence repairs cost in Keynsham?
Guide prices for subsidence repairs in Keynsham 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 Keynsham?
We do. Keynsham and the surrounding area are covered, including nearby Kingswood and Bath. A free initial assessment from your photos is the first step.
Is the ground in Somerset prone to subsidence?
Somerset mixes Lias clays, Mercia Mudstone, limestone hills and the peat and alluvium of the Levels around Bridgwater, which can settle. The former Somerset coalfield around Radstock and Midsomer Norton left recorded workings. Only an investigation can say why a particular building has moved.
Does subsidence always need underpinning?
No, most subsidence is repaired without underpinning. When a leaking drain is fixed or nearby vegetation is managed, the ground usually stabilises and the house needs only crack repairs. Foundation work is kept for movement that continues after the cause has gone.
Do you need to visit before giving a price?
Not at first. We give a free initial assessment from your photos or a call, and a no-obligation written quote once the scope is clear. A fixed price follows in writing once the repair is specified, which normally needs a survey.
Other structural repairs in Keynsham
- Mining subsidence repairs
- Subsidence insurance claim repairs
- Underpinning
- Chimney stack repairs
- Concrete repairs
Subsidence repairs near Keynsham
Photos of the inside and outside of the cracked wall are the quickest way to start; send them and we will reply about your Keynsham home with a guide price.