Colne · Lancashire
Underpinning in Colne
Most underpinning in Colne, as elsewhere, is partial, strengthening one corner or a single wall rather than the whole house. The engineer plans how the new foundation meets the old so that the junction does not become the next place to crack.
Guide price from£960per metre of wall inc VAT
- Postcodes
- BB8, BB9
- Population
- about 20,000
- Area
- Lancashire
- Pricing region
- North West
How do local ground conditions affect underpinning in Colne?
Postcode districts BB8, BB9 cover Colne, a Lancashire town of about 20,000 people. Neighbouring towns we cover: Nelson (2 miles), Burnley (5 miles) and Accrington (11 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. Housing stock in Lancashire: Stone and brick mill terraces, seaside villas in Blackpool and Lytham, and inter-war and post-war semis.
How we usually approach underpinning
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 during underpinning, step by step?
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.
What to look for before calling about underpinning
- Floors sloping noticeably towards one external wall
- Footings found to be very shallow during a trial pit
- Movement continuing through more than one winter of monitoring
Underpinning prices in Colne
These are guide prices for Colne, using North West 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 | £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 |
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.
Questions about underpinning in Colne
How much should I budget for underpinning in Colne?
Guide prices for underpinning in Colne 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.
Can you survey a property in Colne?
We do. Colne and the surrounding area are covered, including nearby Nelson and Burnley. A free initial assessment from your photos is the first step.
Why do houses in Lancashire crack?
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.
Which underpinning method is best?
The right method depends on how deep firm ground lies, the load on the wall and the access. Mass concrete suits moderate depths, beam-and-base spreads heavier loads, and mini-piles reach deep soft ground or work through tight access. The engineer chooses the method from the site investigation.
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.
Related work in Colne
- Gable end wall repairs
- Bay window subsidence repairs
- Crack stitching
- Resin injection ground stabilisation
- Concrete repairs
Underpinning near Colne
Not sure your Colne home needs underpinning at all? Send photos for a free initial assessment and we will say whether an engineer should look first.