Areas We Cover

Addlestone

Addlestone sits on the Thames Basin, where river terrace gravels overlie London clay. Properties in the area can experience subsidence due to seasonal clay shrinkage, particularly in periods of prolonged dry weather.

Banstead

Banstead lies on the dip slope of the North Downs, with chalk overlain by clay-with-flints deposits. This combination can create complex ground conditions where dissolution features in the chalk contribute to ground instability.

Camberley

Camberley is situated on the Bagshot Formation sands with underlying London clay. While sandy soils are generally stable, the interface between sand and clay layers can create perched water tables and ground movement issues.

Caterham

Caterham is built on the chalk of the North Downs with overlying clay deposits in the valley areas. The chalk can contain solution features that pose a risk of sudden ground movement.

Cobham

Cobham sits on London clay with river terrace deposits from the River Mole. The highly shrinkable London clay makes properties particularly vulnerable to subsidence during dry periods.

Cranleigh

Cranleigh lies on Weald clay in the Low Weald of Surrey. The heavy clay soils are prone to significant seasonal volume changes that can affect building foundations.

Dorking

Dorking occupies a gap in the North Downs where the River Mole cuts through the chalk. The town has a complex geology with chalk, Lower Greensand, Gault clay, and alluvial deposits.

Epsom

Epsom sits on London clay, one of the most subsidence-prone soil types in the UK. The clay's high shrinkage potential, combined with mature trees in residential areas, creates significant ground movement risk.

Esher

Esher is located on London clay with Thames river terrace gravels in lower-lying areas. The combination of shrinkable clay and variable ground conditions creates subsidence challenges.

Farnham

Farnham sits at the junction of the London clay and Lower Greensand formations. The varied geology creates different subsidence risks across the town.

Godalming

Godalming lies in the valley of the River Wey on Lower Greensand with Bargate stone. The sandy soils and alluvial deposits along the river create varied ground conditions.

Guildford

As Surrey's county town, Guildford has a complex geology spanning London clay in the north, chalk of the North Downs, and Lower Greensand to the south. Properties across the town face different subsidence risks.

Haslemere

Haslemere is situated on Lower Greensand and Weald clay at the southern edge of Surrey. The mixed geology and hilly terrain create varied ground engineering challenges.

Horley

Horley lies on Weald clay near the Surrey-Sussex border. The heavy clay soils are prone to significant volume changes with seasonal moisture variations.

Leatherhead

Leatherhead sits at the gap where the River Mole crosses the North Downs, with London clay to the north and chalk through the town centre. This geological transition zone creates complex ground conditions.

Oxted

Oxted is built on the chalk of the North Downs escarpment with Lower Greensand to the south. Chalk dissolution features and clay capping can both contribute to ground instability.

Redhill

Redhill sits on the Lower Greensand ridge between the North Downs and the Weald. The Folkestone Beds sand creates generally stable conditions, but nearby clay deposits can affect properties.

Reigate

Reigate lies beneath the North Downs escarpment on Lower Greensand with notable deposits of Fuller's Earth clay. Historic mining of Fuller's Earth has left voids that can cause ground instability.

Staines-upon-Thames

Staines-upon-Thames sits on Thames alluvium and river terrace gravels overlying London clay. The low-lying riverside location creates particular challenges with ground water and soft soils.

Walton-on-Thames

Walton-on-Thames lies on Thames river terrace deposits over London clay. The combination of granular surface soils and shrinkable clay beneath creates variable ground conditions.

Weybridge

Weybridge sits at the confluence of the Rivers Wey and Thames on alluvial deposits and London clay. The mixed ground conditions and high water table create complex subsidence risks.

Woking

Woking is built on Bagshot Formation sands and gravels with London clay at depth. While the sandy upper soils are relatively stable, the underlying clay can cause movement in properties with deeper foundations.