Barnet · Greater London
Subsidence repairs in Barnet
Seasonal movement is behind a lot of subsidence, and once its cause is clear it is usually manageable for a home in Barnet as much as anywhere. The repair that follows is mostly crack stitching, repointing and replastering, with foundation work kept for houses that need it.
Guide price from£3,100per property inc VAT
- Postcodes
- EN4, EN5, N3, N12, N20
- Population
- about 390,000
- Area
- Greater London
- Pricing region
- London
How do local ground conditions affect subsidence repairs in Barnet?
We cover the whole of Barnet, including postcode districts EN4, EN5, N3, N12, N20; about 390,000 people live in the borough. Neighbouring towns we cover: Haringey (4 miles), Borehamwood (4 miles) and Potters Bar (5 miles).
Shrinkable clay is widespread in Greater London. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in Greater London: Victorian and Edwardian terraces with shallow footings, inter-war semis in the outer boroughs, and converted flats and mansion blocks.
Symptoms that point to 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
Guide prices for subsidence repairs in Barnet
These are guide prices for Barnet, using London rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| 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 |
Methods for subsidence repairs
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
From first photo to finished repair
Send photos or call
Send photos of the cracks with a coin or tape for scale, and say when you first noticed them. We give a free initial assessment and suggest whether an engineer, a drain survey or your insurer comes first.
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 should I budget for subsidence repairs in Barnet?
Guide prices for subsidence repairs in Barnet 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.
Can you survey a property in Barnet?
We do. Barnet and the surrounding area are covered, including nearby Haringey and Borehamwood. A free initial assessment from your photos is the first step.
Why do houses in Greater London crack?
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.
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.
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.
Related work in Barnet
- Floor joist repairs
- Wall tie replacement
- Underpinning
- Boundary and garden wall repairs
- Chimney stack repairs
Subsidence repairs near Barnet
Get a free initial assessment for subsidence damage in Barnet: send photos or call, and a written quote follows once the repair is specified.