Shoreham-by-Sea · West Sussex
Bay window subsidence repairs in Shoreham-by-Sea
Bay windows are a feature of many older streets in Shoreham-by-Sea, and so is the crack where a bay meets the front wall. Often it reflects a shallower bay footing reacting to the ground, rather than a problem with the whole house.
Guide price from£670per bay inc VAT
- Postcodes
- BN42, BN43
- Population
- about 19,000
- Area
- West Sussex
- Pricing region
- South East
Why does the ground in West Sussex matter for bay window subsidence repairs?
Shoreham-by-Sea is in West Sussex and takes in postcode districts BN42, BN43. About 19,000 people live there. Nearby places we cover include Lancing (2 miles), Worthing (5 miles) and Brighton (6 miles).
Shrinkable clay is widespread in West Sussex. Ground movement here is more often linked to soils, drains and trees than to mining. Across West Sussex, most homes are Wealden cottages, 1930s semis and bungalows on the coast, and new-town estates in Crawley.
Is it time for bay window subsidence repairs? Common signs
- Bay window sash or casement sticking or binding
- Gaps opening around the internal bay window board
- A step or slope in the bay floor towards the window
What should you budget for bay window subsidence repairs in Shoreham-by-Sea?
For Shoreham-by-Sea we use South East rates. Treat the table as a budget guide, inc VAT; the price you pay is the one on your written quote.
| Item | Guide price | Per |
|---|---|---|
| Bay junction crack repair and tie-inest. | £670 – £2,000 | per bay |
| Traditional underpinning of a bay | £3,350 – £7,850 | per bay |
| Mini-piled bay underpinning | £5,600 – £13,400 | per bay |
Repair options we may recommend
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
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
What to expect when we carry out bay window subsidence repairs
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.
Engineer and checks
Where the cause is unclear, an independent chartered structural engineer inspects, sometimes with a trial pit at the bay and a drain survey. We can arrange the engineer. Monitoring may be suggested if the movement could be seasonal.
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.
Your bay window subsidence repairs questions
How much will bay window subsidence repairs cost in Shoreham-by-Sea?
Guide prices for bay window subsidence repairs in Shoreham-by-Sea start from about £670 per bay, including VAT, on South East rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Shoreham-by-Sea?
Yes. We take enquiries from across Shoreham-by-Sea, including BN42, BN43, and from nearby places such as Lancing and Worthing. Send photos for a free initial view and we will tell you what happens next.
Is the ground in West Sussex prone to subsidence?
North West Sussex around Crawley and Horsham sits on Weald Clay, the South Downs are chalk, and the coastal plain has brickearth and gravels. The Weald Clay is prone to shrink-swell movement near trees. Only an investigation can say why a particular building has moved.
Can a bay be underpinned without underpinning the house?
Yes, underpinning only the bay is common because it is usually the part on shallower footings. The engineer designs the junction so the strengthened bay and the existing house can move slightly without cracking, sometimes with a movement joint or ties.
Will the bay window need replacing?
Usually not. Most windows can be eased, packed or resealed once the bay is stable. If the frame has twisted badly or the glass has cracked, replacement may be worth considering. Under a claim, upgrades beyond like-for-like are normally priced separately.
Other structural repairs in Shoreham-by-Sea
Bay window subsidence repairs near Shoreham-by-Sea
For a no-obligation written quote on bay window subsidence in Shoreham-by-Sea, call or send a few photos with a tape measure in shot.