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Lancashire · England

Subsidence repairs in Lancashire

Subsidence repairs in Lancashire starts with the ground. Lancashire has a mix of ground, with clay in some places and firmer rock in others, and the buildings here are mostly stone and brick mill terraces, so the repair has to suit both.

Guide price from£2,400per property inc VAT

Stepped subsidence crack running down from a window corner, with a tell-tale gauge fixed across it
Area
Lancashire
Pricing region
North West
Ground
Clay in parts
Towns listed
20

What should you know about the ground under Lancashire?

Lancashire is mostly glacial till over sandstone and mudstone, with the Burnley and Accrington coalfield in the east and soft coastal and estuarine ground on the Fylde. Old mill and mine sites leave made ground in many towns.

Parts of Lancashire lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Typical buildings in Lancashire: Stone and brick mill terraces, seaside villas in Blackpool and Lytham, and inter-war and post-war semis.

Signs you may need subsidence repairs

  • Wallpaper rippling or tearing where the wall meets the ceiling
  • Cracks that open in summer and partly close again in winter
  • A gap opening between the skirting board and the floor
  • Doors and windows that start to stick or no longer close

How much will subsidence repairs cost in Lancashire?

For Lancashire we use North West rates. Treat the table as a budget guide, inc VAT; the price you pay is the one on your written quote.

Guide prices inc VAT on North West rates. Items marked est. are our estimates.
ItemGuide pricePer
Structural engineer's investigation and report£480 – £1,900per property
CCTV drain survey (common first check)£145 – £335per survey
Typical repair once the cause is dealt with: crack stitching and making goodest.£2,400 – £11,500per property
Foundation strengthening where it is needed (see underpinning)£960 – £3,350per metre of wall

Which repair method suits a home in Lancashire?

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

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

What happens when we carry out subsidence repairs in Lancashire?

  1. 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.

  2. 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.

  3. 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.

Subsidence: stepped crack above a corner that has dropped on drying claySHRINKABLE CLAYSTEPPED CRACKROOTS DRAW MOISTURE FROM CLAYINDICATIVE · NOT TO SCALE
Subsidence: stepped crack above a corner that has dropped on drying clay. Indicative drawing, not to scale.

Do you need approval 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 near you in Lancashire

Subsidence repairs in Lancashire: questions and answers

Does the ground around Preston cause cracking?

Lancashire is mostly glacial till over sandstone and mudstone, with the Burnley and Accrington coalfield in the east and soft coastal and estuarine ground on the Fylde. Old mill and mine sites leave made ground in many towns. Parts of Lancashire lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Only an investigation on site can say why a particular building has moved.

How much will subsidence repairs cost in Lancashire?

On North West rates, subsidence repairs starts from about £2,400 per property, including VAT. The written price depends on the extent of the damage, access and whether an engineer or building control is needed.

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.

Will past subsidence affect my home insurance?

It can, because insurers ask about previous subsidence at renewal or when you switch. Staying with the insurer who handled a claim is often simplest. Answer any new insurer’s questions honestly and keep the repair records, which show the problem was dealt with.

Can I sell a house that has had subsidence?

Yes, though buyers and lenders will want paperwork. Keep the engineer’s report, monitoring results, the repair specification and any building control sign-off. A repaired house shown to be stable is far easier to sell than one with an open problem.

More repairs we carry out in Lancashire

Next step

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