Underpinning in Hedge End

Postcodes: SO30
Population: about 18,000
Area: Hampshire
Pricing region: South East

Is Hampshire prone to ground movement?

With roughly 18,000 people, Hedge End spans postcode districts SO30 in Hampshire. Nearby places we cover include Eastleigh (4 miles), Southampton (5 miles) and Hythe (6 miles).

Shrinkable clay is widespread in Hampshire. Ground movement here is more often linked to soils, drains and trees than to mining. Across Hampshire, most homes are Victorian terraces in Portsmouth and Southampton, 1930s semis, and large post-war and new-build estates.

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
Cracks that keep widening after the drains have been repaired

Underpinning prices in Hedge End

Guide prices below are for homes in Hedge End, on South East rates and including VAT. A survey or good photos let us turn them into a fixed written price.

Guide prices inc VAT on South East rates. Items marked est. are our estimates.
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

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.
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.
Crack repairs and handover
Once the new foundation has cured, cracks are stitched and repointed, inside walls are made good, and paths or patios disturbed by the dig are reinstated. You receive the building control completion paperwork for your records.

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 Hedge End

How much should I budget for underpinning in Hedge End?

Guide prices for underpinning in Hedge End 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.

Can you survey a property in Hedge End?

We do. Hedge End and the surrounding area are covered, including nearby Eastleigh and Southampton. A free initial assessment from your photos is the first step.

Why do houses in Hampshire crack?

Central Hampshire is chalk, while the south around Portsmouth, Southampton and the New Forest fringe and the north-east around Farnborough sit on London Clay, Reading Beds and other clays and sands. The clay areas see seasonal 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.

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 Hedge End

Underpinning near Hedge End

For a no-obligation written quote on underpinning in Hedge End, send photos of the cracking and any engineer’s report you already hold.