Blackpool · Lancashire
Underpinning in Blackpool
Underpinning a house in Blackpool starts with proof that it is needed, not with a digger. An independent engineer looks at the monitoring and ground investigation, then chooses between mass concrete, beam-and-base or mini-piles for that particular wall and soil.
Guide price from£960per metre of wall inc VAT
- Postcodes
- FY1, FY3, FY4
- Population
- about 150,000
- Area
- Lancashire
- Pricing region
- North West
How do local ground conditions affect underpinning in Blackpool?
We cover Blackpool and its postcode districts FY1, FY3, FY4, part of Lancashire, with a population of roughly 150,000. Nearby, we also cover Poulton-le-Fylde (3 miles), Thornton-Cleveleys (4 miles) and Lytham St Annes (6 miles).
Lancashire has a mix of ground, with clay in some places and firmer rock in others. Parts of Lancashire lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Across Lancashire, most homes are stone and brick mill terraces, seaside villas in Blackpool and Lytham, and inter-war and post-war semis.
How much will underpinning cost in Blackpool?
Prices in Blackpool are worked out on North West rates. They include VAT and are a starting point: access, the extent of the damage and whether an engineer or building control is involved all move the figure.
| Item | Guide price | Per |
|---|---|---|
| Mass-concrete underpinning | £960 – £1,450 | per metre of wall |
| Beam-and-base underpinning | £1,450 – £2,400 | per metre of wall |
| Mini-piled underpinning | £1,900 – £3,350 | per metre of wall |
| Engineer's design and building control feesest. | £770 – £2,400 | per scheme |
Which repair method suits a home in Blackpool?
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
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
What happens when we carry out underpinning in Blackpool?
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.
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.
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.
Signs you may need underpinning
- Cracks that keep widening after the drains have been repaired
- Floors sloping noticeably towards one external wall
- A large tree nearby that cannot be removed or reduced
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 Blackpool: questions and answers
How much will underpinning cost in Blackpool?
Guide prices for underpinning in Blackpool start from about £960 per metre of wall, including VAT, on North West rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Blackpool?
Yes. We take enquiries from across Blackpool, including FY1, FY3, FY4, and from nearby places such as Poulton-le-Fylde and Thornton-Cleveleys. Send photos for a free initial view and we will tell you what happens next.
Is the ground in Lancashire prone to subsidence?
Lancashire is mostly glacial till over sandstone and mudstone, with the Burnley and Accrington coalfield in the east and soft coastal and estuarine ground on the Fylde. Old mill and mine sites leave made ground in many towns. Only an investigation can say why a particular building has moved.
Can I stay in my house during underpinning?
Most people stay at home during external underpinning, because the digging happens outside along the wall. Expect noise, restricted access to that side of the house and some dust. If the work has to be done from inside, through the floor, moving out for part of the job is sometimes advised.
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 Blackpool
- Bay window subsidence repairs
- Brick arch repairs
- Bowing wall repairs
- Mining subsidence repairs
- Subsidence insurance claim repairs
Underpinning near Blackpool
If your insurer has agreed underpinning for your Blackpool home, share the loss adjuster’s schedule and we will price the repair to it in writing.