Groundworks in Great Bookham
Your neighbors in Fetcham. Delivering precision basements, drainage, and foundations to KT23 homes and estates with immediate availability.
Engineered for Bookham
From the private roads of The Park to the conservation area of the High Street. We understand the specific soil conditions and planning constraints of Great Bookham.
The Clay & Spring Lines
Great Bookham sits predominantly on London Clay, but as you move south towards Polesden Lacey, you hit the spring line where the Chalk of the North Downs meets the clay. This creates unique challenges.
The heavy clay in KT23 is highly susceptible to volume change (shrinkage in summer, heave in winter), especially near the village's mature oak trees. We design foundations that protect your property from this seasonal movement.
We use compressible 'clayboard' void formers under reinforced concrete slabs. This allows the ground to move without transferring force to your new extension or build.
For areas near the Common or large trees, we use deep CFA or steel-cased piling to anchor the building into stable strata well below the root zones.
Surface Water Management
Unlike Leatherhead's river issues, Great Bookham suffers primarily from surface water runoff and "ponding" due to the impermeable clay soil. Standard soakaways often fail here. We install robust Sustainable Urban Drainage Systems (SUDS) compliant with Mole Valley requirements.
Hydro-Brake Chambers
Flow control devices that restrict water leaving your site to a manageable rate, preventing the local culverts from backing up during storms.
Borehole Soakaways
Where surface clay is too thick, we drill deep boreholes to reach the permeable chalk layer below, offering rapid, natural drainage.
Permeable Hardscaping
For driveways in 'The Park' or 'Little Bookham', we use resin-bound or permeable block paving to stop water sitting on the surface.
Planning Resources
Mole Valley Planning
Submit applications and check constraints for Great Bookham & Fetcham.
Visit Portal →Bookham Residents
Local association guidelines for development and conservation areas.
View BRA Info →Thames Water
Developer services for build-over agreements and sewer connections.
Developer Services →