Underpinning in Cheshunt

Postcodes: EN7, EN8, EN9
Population: about 44,000
Area: Hertfordshire
Pricing region: East of England

What should you know about the ground under Cheshunt?

With roughly 44,000 people, Cheshunt spans postcode districts EN7, EN8, EN9 in Hertfordshire. Nearby places we cover include Enfield (4 miles), Hoddesdon (4 miles) and Potters Bar (6 miles).

Hertfordshire is one of the parts of the UK where clay soils are most likely to move with the seasons. Ground movement here is more often linked to soils, drains and trees than to mining. Across Hertfordshire, most homes are garden-city houses in Letchworth and Welwyn, 1930s semis, Victorian terraces and post-war new-town estates.

Guide prices for underpinning in Cheshunt

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

Guide prices inc VAT on East of England rates. Items marked est. are our estimates.
Item	Guide price	Per
Mass-concrete underpinning	£1,050 – £1,600	per metre of wall
Beam-and-base underpinning	£1,600 – £2,600	per metre of wall
Mini-piled underpinning	£2,100 – £3,700	per metre of wall
Engineer's design and building control feesest.	£840 – £2,600	per scheme

Methods for underpinning

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

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

From first photo to finished repair

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.
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.

Symptoms that point to underpinning

One corner of the house visibly lower than the others
Footings found to be very shallow during a trial pit
Movement continuing through more than one winter of monitoring

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.

Frequently asked questions

How much will underpinning cost in Cheshunt?

Guide prices for underpinning in Cheshunt start from about £1,050 per metre of wall, including VAT, on East of England rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.

Do you cover Cheshunt?

We do. Cheshunt and the surrounding area are covered, including nearby Enfield and Hoddesdon. A free initial assessment from your photos is the first step.

Is the ground in Hertfordshire prone to subsidence?

South Hertfordshire around Watford, Borehamwood and Potters Bar is London Clay, while the north and west are chalk with clay-with-flints and the east has boulder clay. The clay areas are prone to seasonal subsidence near trees. 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.

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.

Other structural repairs in Cheshunt

Underpinning near Cheshunt

Start with photos and a short description of the movement at your Cheshunt property; we will reply with a free initial assessment and the next step.