Dunoon · Argyll and Bute
Underpinning in Dunoon
Most underpinning in Dunoon, 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£950per metre of wall inc VAT
- Postcodes
- PA23
- Population
- about 8,000
- Area
- Argyll and Bute
- Pricing region
- Scotland
How do local ground conditions affect underpinning in Dunoon?
Postcode districts PA23 cover Dunoon, a Argyll and Bute town of about 8,000 people. We also take enquiries from nearby Helensburgh (9 miles), Largs (11 miles) and Alexandria (13 miles).
Most of Argyll and Bute is on firmer ground than the clay belts of the south-east. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in Argyll and Bute: Victorian villas, stone terraces and cottages, and post-war estates.
How we usually approach underpinning
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
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
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
- Cracks that keep widening after the drains have been repaired
- One corner of the house visibly lower than the others
- Footings found to be very shallow during a trial pit
Underpinning prices in Dunoon
For Dunoon we use Scotland 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 |
|---|---|---|
| Mass-concrete underpinning | £950 – £1,400 | per metre of wall |
| Beam-and-base underpinning | £1,400 – £2,400 | per metre of wall |
| Mini-piled underpinning | £1,900 – £3,300 | per metre of wall |
| Engineer's design and building control feesest. | £760 – £2,400 | per scheme |
Rules for underpinning in Scotland
In Scotland, underpinning and other structural alterations generally need a building warrant from the council’s building standards service before work starts, and a completion certificate at the end; small like-for-like repairs often do not. There is no Party Wall Act in Scotland; shared walls are covered by title deeds and, for flats, the Tenements (Scotland) Act 2004.
Questions about underpinning in Dunoon
How much should I budget for underpinning in Dunoon?
Guide prices for underpinning in Dunoon start from about £950 per metre of wall, including VAT, on Scotland 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 Dunoon?
Survey visits to Dunoon are by arrangement because of travel and access. We can still give a free initial view from photos, and we tell you any travel cost before a visit is booked.
Why do houses in Argyll and Bute crack?
Argyll is hard rock with thin glacial soils and raised beaches along the coast; mainland towns such as Helensburgh and Oban sit on steep coastal slopes. 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.
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.
Related work in Dunoon
- Concrete repairs
- Crack stitching
- Boundary and garden wall repairs
- Roof structure repairs
- Subsidence repairs
Underpinning near Dunoon
Call or send photos about your Dunoon property, and we will explain the likely method, the approvals involved and a guide price before anything is booked.