Worthing · West Sussex
Underpinning in Worthing
Homeowners in Worthing often ask whether underpinning can be avoided, and in many cases it can. When movement continues after drains and trees have been dealt with, a well-designed scheme carries the house down to ground that no longer shifts with the seasons.
Guide price from£1,100per metre of wall inc VAT
- Postcodes
- BN11, BN12, BN13, BN14
- Population
- about 110,000
- Area
- West Sussex
- Pricing region
- South East
Is West Sussex prone to ground movement?
Worthing (BN11, BN12, BN13, BN14) has around 110,000 residents and sits in West Sussex. Nearby places we cover include Lancing (2 miles), Shoreham-by-Sea (5 miles) and Littlehampton (7 miles).
Much of West Sussex sits on clay that shrinks in dry summers and swells in wet winters. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in West Sussex: Wealden cottages, 1930s semis and bungalows on the coast, and new-town estates in Crawley.
What happens when we carry out underpinning in Worthing?
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.
Fixed written price
With the design in hand we confirm a fixed price in writing, setting out the method, the length of wall, access arrangements and the making good. For insurance work we can price to the loss adjuster’s or engineer’s schedule.
Signs you may need underpinning
- A large tree nearby that cannot be removed or reduced
- One corner of the house visibly lower than the others
- Floors sloping noticeably towards one external wall
How much will underpinning cost in Worthing?
These are guide prices for Worthing, using South East rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| 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 |
Which repair method suits a home in Worthing?
Beam-and-base underpinning
A reinforced concrete beam is cast beneath or alongside the existing footing and carries the wall onto mass concrete bases at intervals. It spreads load well across variable ground and can mean less digging than continuous underpinning along the whole wall.
Best for: Longer runs of wall or heavier loads over variable ground
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.
Underpinning in Worthing: questions and answers
What is the price of underpinning in Worthing?
Guide prices for underpinning in Worthing 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 carry out underpinning in Worthing?
Yes, Worthing is covered, along with postcode districts BN11, BN12, BN13, BN14. We also cover nearby Lancing and Shoreham-by-Sea.
Does the ground around Worthing cause cracking?
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.
Does underpinning need building control approval?
Yes, underpinning is building work and needs approval and inspections in England and Wales, a building warrant in Scotland, and council building control in Northern Ireland. Inspectors usually check the excavations before concrete is poured. We deal with building control as part of the job.
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.
More repairs we carry out in Worthing
- Chimney stack repairs
- Extension pulling away repairs
- Resin injection ground stabilisation
- Structural surveys and crack monitoring
- Bay window subsidence repairs
Underpinning near Worthing
Have an engineer’s underpinning design for your Worthing property? Send it over and we will return a fixed price in writing once the scheme is specified.