National Underpinning
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National Underpinning

Underpinning in Brighton

Surveys, design, and installation across Brighton and surrounding towns.

  • UK-wide coverage and local knowledge
  • 20 year remedial warranty
  • Diagnostics to remedial work

Our Brighton team handles foundation repair across the wider East Sussex area. We regularly work in Eastbourne, Hastings, Lewes, Hove, Bexhill-on-Sea and Crowborough, on Victorian terraces, semi-detached houses, modern builds, and commercial properties.

Local coverage

Every job starts with a free site survey. A chartered structural engineer signs off the design before any work begins, and the installation is backed by a 10-year workmanship guarantee.

Ground conditions in Brighton

high prevalence

Mixed ground with bands of London Clay, Weald Clay, Gault Clay and chalk depending on location.

Plastic clays across much of the region are sensitive to drought years and tree-related drying.

  • Clay-dominated ground
  • Mature trees in established suburbs
  • Localised chalk and greensand

Methods we use locally

The right method depends on soil conditions, depth of failure, and access on site. The engineer's design decides, these are the options on the table for Brighton properties.

Method Time on site Best for in Brighton
Beam and base

Reinforced concrete beams that spread the load.

2 to 6 weeks Variable ground, bay windows, redistributing loads. Common on bay windows and settled extensions through Lewes and Hove where loads need redistributing along a single elevation.
Foam injection

Lightweight stabilisation that works to depth.

1 day for most jobs Slab re-levelling, void fill, conservatory bases. Useful for re-levelling slabs and floors in Hove and Bexhill-on-Sea, where access for excavation is tight and disruption must be kept low.
Mass concrete

The traditional method, done properly.

2 to 6 weeks per elevation Shallow failures on traditional ground, insurance claims. Well-suited to traditional brick properties across Brighton, Eastbourne and Hastings where shallow bays can reach competent ground by hand.
Mini piled

When the good ground is a long way down.

1 to 3 weeks on site Deep bearing layers, made-up ground, restricted access. The usual answer for deep clay or made-up ground around Brighton and Bexhill-on-Sea, and for rear-only access through the property.
Resin injection

Targeted ground improvement, no excavation.

1 day for most jobs Granular soils, intact foundations, voids and density loss. Quick non-disruptive fix for shallow void filling and ground stabilisation across East Sussex, suited to lighter loads in Eastbourne and Lewes.
Screw pile

Helical piles, no concrete cure time.

2 to 5 days Lighter loads, time-critical jobs, conservatories. Low-vibration option for terraces close to neighbours in Hastings and Crowborough, with quick installation and minimal spoil.

Areas we cover near Brighton

Eastbourne
Hastings
Lewes
Hove
Bexhill-on-Sea
Crowborough

Nearby cities

Common questions

Need an opinion on a Brighton property?

A surveyor will be in touch within 48 hours.

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