Spennymoor · County Durham
Extension pulling away repairs in Spennymoor
An extension pulling away from a Spennymoor house is often a drain problem, a shallow footing or a missing tie-in, rather than a failing building. Finding out which applies decides whether the fix is a junction repair or new foundations.
Guide price from£550per junction inc VAT

- Postcodes
- DL16
- Population
- about 18,000
- Area
- County Durham
- Pricing region
- North East
Why does the ground in County Durham matter for extension pulling away repairs?
With roughly 18,000 people, Spennymoor spans postcode districts DL16 in County Durham. If you are just outside Spennymoor, we also cover Bishop Auckland (4 miles), Durham (5 miles) and Newton Aycliffe (6 miles).
County Durham has a mix of ground, with clay in some places and firmer rock in others. Historic coal workings are recorded beneath parts of County Durham, and a coal mining search is worth checking where movement is unexplained. Across County Durham, most homes are colliery terraces, stone and brick villas in Durham and Darlington, and post-war council estates.
What to look for before calling about extension pulling away repairs
- Extension roof flashing lifting off the original wall
- A vertical crack or gap where the extension meets the house
- Floor level dropping where the extension and house floors meet
Extension pulling away repairs prices in Spennymoor
Guide prices below are for homes in Spennymoor, on North East rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Junction crack repair with stainless tiesest. | £550 – £1,850 | per junction |
| Movement joint and making goodest. | £370 – £1,100 | per junction |
| Underpinning the extension where needed | £920 – £2,300 | per metre of wall |
How we usually approach extension pulling away repairs
Underpinning the extension
If the extension is still dropping because its footings are too shallow or on poor ground, they are taken deeper by mass concrete, beam-and-base or mini-piles. The engineer designs the scheme, and the junction is repaired once the new foundation is in.
Best for: Active movement from shallow footings, roots or soft ground
Movement joint and making good
Where some seasonal movement is expected to continue, the junction is formed into a proper flexible movement joint with a compressible filler and sealant, so the two parts can move without cracking. Flashings and internal finishes are detailed to suit.
Best for: Minor ongoing movement that does not threaten the structure
What happens during extension pulling away repairs, step by step?
Show us the junction
Send photos of the crack outside, the internal corner and any flashing above, with a measure for scale. We give a free initial assessment and an initial view on whether the gap is likely old or still opening.
Find what is moving
An independent chartered structural engineer can inspect, and we can arrange one. A drain survey under the extension, a trial pit at its footing and tell-tale monitoring across the joint are common checks before choosing the repair.
Finish and hand over
Internal corners are replastered, skirtings and coving refixed, and doors or windows in the extension eased where the movement affected them. Records of the repair and any approvals are passed to you.
Rules for extension pulling away 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 extension pulling away repairs in Spennymoor
What is the price of extension pulling away repairs in Spennymoor?
Guide prices for extension pulling away repairs in Spennymoor start from about £550 per junction, including VAT, on North 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 extension pulling away repairs in Spennymoor?
Yes, Spennymoor is covered, along with postcode districts DL16. We also cover nearby Bishop Auckland and Durham.
Does the ground around Spennymoor cause cracking?
Much of County Durham sits on the Durham Coalfield, worked for centuries, often under a cover of glacial clay. Many former pit villages have recorded mine workings, and coal mining searches are standard for property here. Only an investigation can say why a particular building has moved.
Why is my extension pulling away from my house?
Usually because the extension and the house sit on different foundations that react differently to the ground. Shallow extension footings, leaking drains under the extension, nearby roots and weak tie-ins between old and new walls are the common causes.
Who is responsible if a recent extension is moving?
If the extension is recent, the original builder, the designer or building control records may be relevant, and you may have rights against the builder. Gather the plans, completion certificate and contract. Insurance often excludes defects in new construction, so check your policy.
More repairs we carry out in Spennymoor
Extension pulling away repairs near Spennymoor
For a no-obligation written quote to repair an extension pulling away in Spennymoor, call or send a few photos with a tape measure across the gap.