Swanley · Kent
Subsidence repairs in Swanley
Whatever the ground is like under Swanley, the order of work for subsidence stays the same. Confirm the cause, deal with it, check the movement has stopped, and only then repair the walls so the cracks do not simply return.
Guide price from£2,800per property inc VAT

- Postcodes
- BR8
- Population
- about 22,000
- Area
- Kent
- Pricing region
- South East
What should you know about the ground under Swanley?
Swanley (BR8) has around 22,000 residents and sits in Kent. Neighbouring towns we cover: Dartford (4 miles), Bexley (4 miles) and Bromley (5 miles).
Shrinkable clay is widespread in Kent. Parts of Kent lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Across Kent, most homes are Victorian terraces in the Medway towns, weatherboarded and Wealden houses, 1930s semis and seaside bungalows.
What happens when we carry out subsidence repairs in Swanley?
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.
Signs you may need subsidence repairs
- A gap opening between the skirting board and the floor
- Fresh cracks showing on both the inside and outside of one wall
- Cracks that open in summer and partly close again in winter
How much will subsidence repairs cost in Swanley?
Guide prices below are for homes in Swanley, on South East rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Structural engineer's investigation and report | £560 – £2,250 | per property |
| CCTV drain survey (common first check) | £170 – £390 | per survey |
| Typical repair once the cause is dealt with: crack stitching and making goodest. | £2,800 – £13,400 | per property |
| Foundation strengthening where it is needed (see underpinning) | £1,100 – £3,900 | per metre of wall |
Which repair method suits a home in Swanley?
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
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
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 Swanley: questions and answers
What is the price of subsidence repairs in Swanley?
Guide prices for subsidence repairs in Swanley start from about £2,800 per property, including VAT, on South East rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you carry out subsidence repairs in Swanley?
We do. Swanley and the surrounding area are covered, including nearby Dartford and Bexley. A free initial assessment from your photos is the first step.
Does the ground around Swanley cause cracking?
North Kent sits on London Clay, central Kent on Gault and Weald Clays and the Downs on chalk, so shrinkable clay is widespread. East Kent around Deal and Dover had a small deep coalfield, worked until the late 1980s. Only an investigation can say why a particular building has moved.
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.
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.
More repairs we carry out in Swanley
- Roof structure repairs
- Extension pulling away repairs
- Bowing wall repairs
- Chimney stack repairs
- Retaining wall repairs
Subsidence repairs near Swanley
For a no-obligation written quote on subsidence repairs in Swanley, call us or send a few photos and a short note on when the cracks appeared.