Groundworks in Little Bookham
We are your immediate neighbors in Fetcham. Delivering precision basements, drainage, and foundations to KT23 with a 5-minute response time.
Engineered for the Spring Line
Little Bookham sits on the geological "spring line" where the Chalk of the North Downs meets the London Clay of the Common. This creates unique groundwater challenges that we are experts in managing.
The Bookham Geology Mix
KT23 is geologically diverse. Properties near Little Bookham Street and towards the Common sit on heavy clay, prone to significant seasonal movement (heave/subsidence) and waterlogging.
However, properties south of the Guildford Road (A246) often sit on Chalk or Thanet Sands. While this offers better load-bearing, the transition zone often experiences high hydrostatic pressure. We select the specific piling rig or foundation strategy based on exactly where you sit on this boundary.
For heavy clay zones, we use clay-heave protection (Cordek) and deep reinforced piles to bypass the active soil zone, ensuring your extension never moves.
In the southern chalk zones, we utilize deep-bore soakaways to manage surface water, drilling down to permeable strata to satisfy Mole Valley drainage requirements.
Managing Surface Run-Off
Little Bookham is susceptible to surface water run-off descending from the North Downs / Polesden Lacey area. During heavy storms, this can overwhelm standard drainage. We implement robust SUDS (Sustainable Drainage Systems) to protect your property.
Deep Bore Soakaways
Where the clay cap is thin, we drill through to the underlying chalk to create highly efficient drainage that doesn't rely on the public sewer.
Crate Systems
For properties with high water tables, we install large-volume attenuation crates (AquaCells) to hold storm water and release it at a controlled rate.
Permeable Drives
We install resin-bound and permeable block paving driveways that comply with planning laws by allowing water to drain naturally into the sub-base.
Planning Resources
Mole Valley Planning
Check constraints for the Little Bookham Conservation Area and Green Belt applications.
Visit Portal →Conservation Area Map
View the specific boundaries of the Little Bookham conservation zone.
View Map →Thames Water
Developer services for build-over agreements and sewer connections.
Developer Services →