Dewsbury · West Yorkshire
Extension pulling away repairs in Dewsbury
For many Dewsbury homes, the extension was added decades after the house was built, on concrete that never matched the original footings. Where that difference causes movement, a designed movement joint or a deeper foundation is the usual fix.
Guide price from£570per junction inc VAT

- Postcodes
- BD11, BD19, WF12, WF13, WF15
- Population
- about 61,000
- Area
- West Yorkshire
- Pricing region
- Yorkshire and the Humber
Why does the ground in West Yorkshire matter for extension pulling away repairs?
Dewsbury is in West Yorkshire and takes in postcode districts BD11, BD19, WF12, WF13, WF15. About 61,000 people live there. Neighbouring towns we cover: Ossett (2 miles), Mirfield (3 miles) and Morley (4 miles).
Clay soils are found in parts of West Yorkshire. Historic coal workings are recorded beneath parts of West Yorkshire, and a coal mining search is worth checking where movement is unexplained. Across West Yorkshire, most homes are stone back-to-backs and terraces, mill housing, Victorian villas and post-war estates.
From first photo to finished repair
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.
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.
Repair the junction
Drains are repaired first if they are leaking. The joint is then tied, formed as a movement joint or rebuilt after underpinning, with roof flashings reset so the junction stays watertight. Building control is handled where needed.
Symptoms that point to extension pulling away repairs
- A vertical crack or gap where the extension meets the house
- Daylight or draughts showing through the internal corner joint
- Extension roof flashing lifting off the original wall
Guide prices for extension pulling away repairs in Dewsbury
These are guide prices for Dewsbury, using Yorkshire and the Humber rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| 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 |
Methods for 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
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.
Frequently asked questions
How much should I budget for extension pulling away repairs in Dewsbury?
Guide prices for extension pulling away repairs in Dewsbury 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.
Can you survey a property in Dewsbury?
We do. Dewsbury and the surrounding area are covered, including nearby Ossett and Mirfield. A free initial assessment from your photos is the first step.
Why do houses in West Yorkshire crack?
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.
What is a movement joint?
A movement joint is a deliberate, flexible break in a wall that lets two parts of a building move slightly without cracking. It is filled with a compressible material and sealed. At an extension junction it can replace a rigid joint that keeps cracking.
Will my extension need underpinning?
Often not. Many separating extensions are fixed by repairing a drain, tying the junction or forming a movement joint. Underpinning is for extensions that keep dropping because their footings are too shallow or the ground beneath is poor, as shown by monitoring.
Related work in Dewsbury
- Structural crack repairs
- Wall tie replacement
- Subsidence insurance claim repairs
- Crack stitching
- Retaining wall repairs
Extension pulling away repairs near Dewsbury
Call about the cracked extension junction at your Dewsbury property; a free initial assessment first, then a fixed written price once the repair is specified.