Brighton · East Sussex
Underpinning in Brighton
If an engineer has recommended underpinning for your Brighton home, we can price the scheme from their drawings and calculations. You receive a fixed price in writing that covers the method, the length of wall, access and the making good afterwards.
Guide price from£1,100per metre of wall inc VAT
- Postcodes
- BN1, BN2, BN3, BN41
- Population
- about 280,000
- Area
- East Sussex
- Pricing region
- South East
Why does the ground in East Sussex matter for underpinning?
Brighton is in East Sussex and takes in postcode districts BN1, BN2, BN3, BN41. About 280,000 people live there. If you are just outside Brighton, we also cover Shoreham-by-Sea (6 miles), Peacehaven (6 miles) and Lewes (7 miles).
East Sussex 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 East Sussex: Regency and Victorian terraces on the coast, Wealden timber-framed houses, and inter-war bungalows and semis.
From first photo to finished repair
Engineer’s investigation
An independent chartered structural engineer studies the monitoring results, trial pits and soil tests, then decides whether underpinning is needed and which method suits. We can arrange the engineer if you do not already have one.
Design and approvals
The engineer produces drawings and calculations. We make the building control or building warrant application, and party wall notices are served where the law requires them, before any digging starts.
Excavation and concrete
Work runs in the sequence the engineer sets so the wall is never left unsupported over a long length. Building control inspects the excavations before concrete goes in, and each section is dry-packed tight to the footing above.
Symptoms that point to underpinning
- A large tree nearby that cannot be removed or reduced
- Floors sloping noticeably towards one external wall
- Movement continuing through more than one winter of monitoring
Guide prices for underpinning in Brighton
The ranges below reflect typical South East costs for underpinning, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Mass-concrete underpinning | £1,100 – £1,700 | per metre of wall |
| Beam-and-base underpinning | £1,700 – £2,800 | per metre of wall |
| Mini-piled underpinning | £2,250 – £3,900 | per metre of wall |
| Engineer's design and building control feesest. | £895 – £2,800 | per scheme |
Methods for underpinning
Mass concrete underpinning
The traditional method. Short sections under the wall are dug out in a set sequence, usually about a metre at a time, and filled with concrete before the next section is opened. It suits moderate depths and good access, and it needs little specialist plant.
Best for: Shallow failures on firm ground found at moderate depth
Mini-piled underpinning
Small-diameter piles are driven or bored down to firm ground and linked by a reinforced beam or needles that pick up the wall. Compact rigs fit through narrow access, and the method reaches depths that would be impractical to excavate by hand.
Best for: Deep soft ground, tree roots, or restricted access
Rules for underpinning 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 will underpinning cost in Brighton?
Guide prices for underpinning in Brighton start from about £1,100 per metre of wall, 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 Brighton?
Yes. We take enquiries from across Brighton, including BN1, BN2, BN3, BN41, and from nearby places such as Shoreham-by-Sea and Peacehaven. Send photos for a free initial view and we will tell you what happens next.
Is the ground in East Sussex prone to subsidence?
Inland East Sussex is Weald Clay and Wealden sands, while the South Downs and the coast around Brighton and Eastbourne are chalk. The Weald Clay areas are prone to shrink-swell movement near trees. Only an investigation can say why a particular building has moved.
Do I need to tell my neighbours about underpinning?
In England and Wales you usually do. Underpinning a party wall normally needs two months’ notice, and excavating near a neighbour’s foundations needs one month’s notice under the Party Wall etc. Act 1996. Scotland and Northern Ireland have no equivalent Act, but agreeing the work in writing still helps.
Will underpinning affect selling my house?
It needs explaining to buyers, but a properly documented scheme is far better than unresolved movement. Keep the engineer’s design, the building control completion certificate and any insurance paperwork. Lenders and surveyors will usually ask for these before agreeing a sale.
Other structural repairs in Brighton
- Structural surveys and crack monitoring
- Subsidence insurance claim repairs
- Boundary and garden wall repairs
- Concrete repairs
- Extension pulling away repairs
Underpinning near Brighton
Not sure your Brighton home needs underpinning at all? Send photos for a free initial assessment and we will say whether an engineer should look first.