Kensington and Chelsea · Greater London
Subsidence repairs in Kensington and Chelsea
Tapered cracks around the windows or doors of a Kensington and Chelsea home are worth taking seriously without assuming the worst. In most cases the cause can be found and removed, and the house then needs crack stitching and making good rather than new foundations.
Guide price from£3,100per property inc VAT
- Postcodes
- SW3, SW5, SW7, SW10, W2
- Population
- about 140,000
- Area
- Greater London
- Pricing region
- London
Is Greater London prone to ground movement?
Kensington and Chelsea takes in postcode districts including SW3, SW5, SW7, SW10, W2, with about 140,000 residents. We also take enquiries from nearby Hammersmith and Fulham (1 miles), Westminster (2 miles) and Wandsworth (3 miles).
Greater London is one of the parts of the UK where clay soils are most likely to move with the seasons. Ground movement here is more often linked to soils, drains and trees than to mining. Across Greater London, most homes are Victorian and Edwardian terraces with shallow footings, inter-war semis in the outer boroughs, and converted flats and mansion blocks.
What to look for before calling about subsidence repairs
- Fresh cracks showing on both the inside and outside of one wall
- Doors and windows that start to stick or no longer close
- Cracks that open in summer and partly close again in winter
Subsidence repairs prices in Kensington and Chelsea
Prices in Kensington and Chelsea are worked out on London 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 | £625 – £2,500 | per property |
| CCTV drain survey (common first check) | £190 – £440 | per survey |
| Typical repair once the cause is dealt with: crack stitching and making goodest. | £3,100 – £15,000 | per property |
| Foundation strengthening where it is needed (see underpinning) | £1,250 – £4,400 | per metre of wall |
How we usually approach 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
What happens during subsidence repairs, step by step?
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.
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.
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.
Questions about subsidence repairs in Kensington and Chelsea
What is the price of subsidence repairs in Kensington and Chelsea?
Guide prices for subsidence repairs in Kensington and Chelsea start from about £3,100 per property, including VAT, on London 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 Kensington and Chelsea?
Yes, Kensington and Chelsea is covered, along with postcode districts SW3, SW5, SW7, SW10. We also cover nearby Hammersmith and Fulham and Westminster.
Does the ground around Kensington and Chelsea cause cracking?
Most of Greater London sits on London Clay, among the most shrinkage-prone ground in the UK, with river gravels along the Thames. Subsidence claims here are among the most frequent in the country, especially after dry summers and near street and garden trees. 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.
More repairs we carry out in Kensington and Chelsea
- Floor joist repairs
- Boundary and garden wall repairs
- Underpinning
- Resin injection ground stabilisation
- Subsidence insurance claim repairs
Subsidence repairs near Kensington and Chelsea
For a no-obligation written quote on subsidence repairs in Kensington and Chelsea, call us or send a few photos and a short note on when the cracks appeared.