Ealing · Greater London
Bay window subsidence repairs in Ealing
Repairing a subsiding bay in Ealing usually involves one of three routes: tie the junction, underpin with concrete, or install mini-piles. The engineer picks the route from the ground and the movement history, and we price it in writing.
Guide price from£750per bay inc VAT

- Postcodes
- TW8, UB1, UB2, UB5, UB6
- Population
- about 370,000
- Area
- Greater London
- Pricing region
- London
How do local ground conditions affect bay window subsidence repairs in Ealing?
Ealing takes in postcode districts including TW8, UB1, UB2, UB5, UB6, with about 370,000 residents. We also take enquiries from nearby Brent (3 miles), Hounslow (4 miles) and Harrow (5 miles).
Greater London is one of the parts of the UK where clay soils are most likely to move with the seasons. Ground movement here is more often linked to soils, drains and trees than to mining. What you mostly find across Greater London: Victorian and Edwardian terraces with shallow footings, inter-war semis in the outer boroughs, and converted flats and mansion blocks.
What happens when we carry out bay window subsidence repairs in Ealing?
Photos and first view
Send photos of the outside junction, the inside corners and the window, with a scale. We give a free initial assessment and tell you whether the crack looks old and stable or whether an engineer should inspect first.
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.
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.
Signs you may need bay window subsidence repairs
- Bay window sash or casement sticking or binding
- A step or slope in the bay floor towards the window
- A vertical crack where the bay meets the front wall
How much will bay window subsidence repairs cost in Ealing?
These are guide prices for Ealing, using London rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| Item | Guide price | Per |
|---|---|---|
| Bay junction crack repair and tie-inest. | £750 – £2,250 | per bay |
| Traditional underpinning of a bay | £3,750 – £8,750 | per bay |
| Mini-piled bay underpinning | £6,250 – £15,000 | per bay |
Which repair method suits a home in Ealing?
Mini-piled bay underpinning
Small piles are installed to depth around or beneath the bay and linked by a reinforced beam or needles that pick up its weight. It suits deeper soft ground and heavy root activity, and the compact rigs fit into a front garden.
Best for: Deep clay, nearby trees, or poor ground below the bay
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
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.
Bay window subsidence repairs in Ealing: questions and answers
What is the price of bay window subsidence repairs in Ealing?
Guide prices for bay window subsidence repairs in Ealing start from about £750 per bay, including VAT, on London 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 Ealing?
Yes. We take enquiries from across Ealing, including TW8, UB1, UB2, UB5, and from nearby places such as Brent and Hounslow. Send photos for a free initial view and we will tell you what happens next.
Does the ground around Ealing cause cracking?
Most of Greater London sits on London Clay, among the most shrinkage-prone ground in the UK, with river gravels along the Thames. Subsidence claims here are among the most frequent in the country, especially after dry summers and near street and garden trees. Only an investigation can say why a particular building has moved.
Is a crack between my bay and the house serious?
It is often not serious, especially if it is old, fine and unchanged for years. A crack that is widening, tapering or matched by sticking windows and a sloping bay floor needs looking at. An engineer’s inspection, sometimes with monitoring, will confirm whether the bay is still moving.
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.
More repairs we carry out in Ealing
- Crack stitching
- Boundary and garden wall repairs
- Subsidence repairs
- Underpinning
- Subsidence insurance claim repairs
Bay window subsidence repairs near Ealing
Not sure whether your Ealing bay is still moving? Send dated photos, and we will suggest whether monitoring or a repair comes next.