Leeds · West Yorkshire
Bay window subsidence repairs in Leeds
A cracked bay in Leeds can be anything from an old, stable joint to a foundation that is still dropping. Photos of the outside junction and the inside corners usually show which is more likely and whether an engineer should look.
Guide price from£570per bay inc VAT

- Postcodes
- LS1, LS2, LS3
- Population
- about 540,000
- Area
- West Yorkshire
- Pricing region
- Yorkshire and the Humber
Is West Yorkshire prone to ground movement?
With roughly 540,000 people, Leeds spans postcode districts LS1, LS2, LS3 in West Yorkshire. We also take enquiries from nearby Morley (4 miles), Pudsey (5 miles) and Horsforth (5 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.
Symptoms that point to bay window subsidence repairs
- Bay window sash or casement sticking or binding
- Gaps opening around the internal bay window board
- Cracks above the bay window head or below the sill
Guide prices for bay window subsidence repairs in Leeds
Guide prices below are for homes in Leeds, 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 |
|---|---|---|
| Bay junction crack repair and tie-inest. | £570 – £1,700 | per bay |
| Traditional underpinning of a bay | £2,850 – £6,650 | per bay |
| Mini-piled bay underpinning | £4,750 – £11,400 | per bay |
Methods for bay window subsidence repairs
Traditional underpinning of the bay
The bay footing is excavated in short sections and new mass concrete is placed down to firmer ground below the zone affected by roots and seasons. Because a bay is a short length of wall, the work is compact, but it needs building control approval.
Best for: Active bay movement on firm ground at moderate depth
Junction crack repair and tie-in
Where movement has stopped, the open joint between bay and house is raked out, stainless ties or helical bars are fixed across it, and the joint is repointed to match. Internal plaster along the crack is cut back and renewed before redecoration.
Best for: Old, stable cracks where the bay is no longer moving
From first photo to finished repair
Agree the repair
The engineer decides between tie-in repairs and underpinning. We confirm a fixed price in writing once the repair is specified, including scaffolding if needed, the bay window, roof flashing and internal making good.
Carry out the work
Ties are fitted across the junction, or the bay is underpinned in sequence with building control inspecting the dig. The bay window and flashings are checked and eased or resealed where the movement has disturbed them.
Make good inside
Plaster around the bay and along the junction is renewed, the window board is refixed and the room is ready for decoration. Building control paperwork, where it applies, is passed to you for your records.
Rules for bay window 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.
Frequently asked questions
What is the price of bay window subsidence repairs in Leeds?
Guide prices for bay window subsidence repairs in Leeds start from about £570 per bay, 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 carry out bay window subsidence repairs in Leeds?
Yes. We take enquiries from across Leeds, including LS1, LS2, LS3, and from nearby places such as Morley and Pudsey. Send photos for a free initial view and we will tell you what happens next.
Does the ground around Leeds cause cracking?
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 do bay windows crack away from the house?
Bays often stand on shallower footings than the main walls, so they react to drying clay, roots and drain leaks that the deeper house foundations escape. Many bays were also never properly tied in, so any movement opens a clean vertical crack at the junction.
Can I just fill the crack myself?
Filling it hides the evidence without dealing with the cause, and if the bay is still moving the crack will reopen. Photograph it with a scale and date first. If you plan to claim on insurance, tell your insurer before any repair, including filling.
More repairs we carry out in Leeds
- Roof structure repairs
- Mining subsidence repairs
- Subsidence repairs
- Boundary and garden wall repairs
- Underpinning
Bay window subsidence repairs near Leeds
Not sure whether your Leeds bay is still moving? Send dated photos, and we will suggest whether monitoring or a repair comes next.