Ossett · West Yorkshire
Extension pulling away repairs in Ossett
If the corner joint in your Ossett extension keeps splitting after you fill it, something is still moving. Measuring the gap over a few months, with dated photos, gives an engineer the evidence to recommend the right repair.
Guide price from£570per junction inc VAT

- Postcodes
- WF5, WF12, WF13
- Population
- about 22,000
- Area
- West Yorkshire
- Pricing region
- Yorkshire and the Humber
Is West Yorkshire prone to ground movement?
Ossett, West Yorkshire: about 22,000 residents across postcode districts WF5, WF12, WF13. Neighbouring towns we cover: Dewsbury (2 miles), Wakefield (3 miles) and Morley (4 miles).
West Yorkshire has a mix of ground, with clay in some places and firmer rock in others. Historic coal workings are recorded beneath parts of West Yorkshire, and a coal mining search is worth checking where movement is unexplained. Housing stock in West Yorkshire: Stone back-to-backs and terraces, mill housing, Victorian villas and post-war estates.
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.
Choose the fix
The engineer decides between ties, a movement joint or underpinning. We confirm a fixed price in writing once the repair is specified, covering the junction, flashings, internal finishes and any foundation work.
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.
What to look for before calling about extension pulling away repairs
- Daylight or draughts showing through the internal corner joint
- Floor level dropping where the extension and house floors meet
- A vertical crack or gap where the extension meets the house
Extension pulling away repairs prices in Ossett
Guide prices below are for homes in Ossett, on Yorkshire and the Humber 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. | £570 – £1,900 | per junction |
| Movement joint and making goodest. | £380 – £1,150 | per junction |
| Underpinning the extension where needed | £950 – £2,400 | per metre of wall |
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 Ossett
How much will extension pulling away repairs cost in Ossett?
Guide prices for extension pulling away repairs in Ossett start from about £570 per junction, including VAT, on Yorkshire and the Humber rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Ossett?
Yes. We take enquiries from across Ossett, including WF5, WF12, WF13, and from nearby places such as Dewsbury and Wakefield. Send photos for a free initial view and we will tell you what happens next.
Is the ground in West Yorkshire prone to subsidence?
West Yorkshire lies largely on the Coal Measures, with shallow historic workings around Leeds, Wakefield and Kirklees, and gritstone hills to the west. Steep sites mean retaining walls are common. 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.
Can I just fill the gap with mastic?
Mastic can keep water out short term, but it does not stop movement or reconnect the walls. If the gap reopens after filling, something is still moving. Photograph and measure it over a few months first, so an engineer can see the trend.
Other structural repairs in Ossett
- Concrete repairs
- Boundary and garden wall repairs
- Underpinning
- Subsidence insurance claim repairs
- Mining subsidence repairs
Extension pulling away repairs near Ossett
Send photos of the extension junction at your Ossett home, inside and out, and we will give a free initial assessment and a guide price.