Longfield · Kent
Mining subsidence repairs in Longfield
Mining damage to a house in Longfield is usually repaired the same way as other movement once the ground is settled: stitching, stabilising or underpinning as the engineer specifies. What differs is who investigates and who may be liable.
Guide price from£90per metre of crack inc VAT
- Postcodes
- DA3, DA4, DA13
- Population
- about 17,000
- Area
- Kent
- Pricing region
- South East
How do local ground conditions affect mining subsidence repairs in Longfield?
With roughly 17,000 people, Longfield spans postcode districts DA3, DA4, DA13 in Kent. Nearby places we cover include Swanscombe (3 miles), Gravesend (4 miles) and Dartford (5 miles).
Much of Kent sits on clay that shrinks in dry summers and swells in wet winters. Parts of Kent lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Housing stock in Kent: Victorian terraces in the Medway towns, weatherboarded and Wealden houses, 1930s semis and seaside bungalows.
What to expect when we carry out mining subsidence repairs
Check the mining record
A coal mining report or a search of mining records shows whether recorded workings or shafts lie near the property. Records are incomplete, so a clear report does not rule mining out, and a recorded seam nearby does not prove it is the cause.
Written price to the scope
We price the repair from the engineer’s or claim schedule and confirm a fixed price in writing once the work is specified. Where a claim body or insurer is handling the repair, their own process for appointing contractors applies.
Repairs and records
Work proceeds once any ground treatment is complete and the engineer is satisfied. We stitch, stabilise or underpin as specified, make good inside and out, deal with building control where needed, and hand over records for your file.
Is it time for mining subsidence repairs? Common signs
- Damage that does not change with the seasons
- Cracks running through the foundations and up both faces of a wall
- Cracks appearing suddenly across several walls at once
What should you budget for mining subsidence repairs in Longfield?
Guide prices below are for homes in Longfield, 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 |
|---|---|---|
| Crack stitching and making good | £90 – £200 | per metre of crack |
| Re-levelling or ground stabilisation by resin injection | £895 – £1,700 | per metre of wall |
| Underpinning where the engineer specifies it | £1,100 – £3,900 | per metre of wall |
| Repair schedule for a claim (pricing an engineer's scope)est. | Free to request | — |
Repair options we may recommend
Pricing an engineer’s repair scope
When a claim is under way, the engineer or claim handler usually writes the scope of repairs. We price that schedule item by item, at no charge to request, and carry out the work if you choose us. Anything outside the scope is shown separately.
Best for: Homeowners with a mining claim or engineer’s report in hand
Underpinning to sound ground
Where the engineer specifies it, foundations are taken down by mass concrete, beam-and-base or mini-piles to ground that will not move further. On mining sites the design often follows grouting of old workings so the new foundation sits above a stable mass.
Best for: Ongoing movement or damage beyond what crack repairs can hold
Rules for mining 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.
Your mining subsidence repairs questions
What is the price of mining subsidence repairs in Longfield?
Guide prices for mining subsidence repairs in Longfield start from about £90 per metre of crack, 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 mining subsidence repairs in Longfield?
Yes, Longfield is covered, along with postcode districts DA3, DA4, DA13. We also cover nearby Swanscombe and Gravesend.
Does the ground around Longfield 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.
Who pays for coal-mining subsidence damage?
Liability for damage from past coal mining usually rests with the Mining Remediation Authority, or with the operator of a working mine. They investigate whether coal mining caused the damage before agreeing any repair. Tell your home insurer as well, because policy cover and the mining claim can overlap.
What should I do if a hole opens in my garden?
Keep everyone away from it and do not try to fill it yourself. Report it straight away to the Mining Remediation Authority if coal mining may be involved, or to your council and insurer otherwise. Old shafts can be deeper and wider than the visible hole suggests.
More repairs we carry out in Longfield
- Subsidence repairs
- Lintel replacement
- Underpinning
- Resin injection ground stabilisation
- Subsidence insurance claim repairs
Mining subsidence repairs near Longfield
Once the cause is confirmed at your Longfield property, we confirm a fixed price in writing for the repairs; send the report or photos to start.