Groundworks in Kingston
From the Coombe Estate to the Thames riverside. We deliver complex basements, flood defense systems, and heavy civil engineering to Kingston upon Thames.
Engineered for Kingston
Kingston presents unique challenges: tight urban access in the town center, high water tables near the River Thames, and strict conservation covenants on Coombe Hill. We have the fleet and the expertise to handle them all.
Gravel vs. Clay
Closer to the Thames (KT1), the ground consists largely of River Terrace Deposits (Gravel/Sand). While this drains well, it often comes with a high water table and "running sand" risks during excavation, requiring trench sheeting.
Moving up towards Coombe and Norbiton (KT2), the geology shifts to solid London Clay. Here, the risk is soil shrinkage and heave. We design piled foundations that isolate the building from this seasonal movement.
In river zones, we use continuous flight auger (CFA) piling to prevent water ingress during construction, and Type B waterproof concrete for all sub-structures.
On Coombe Hill, we install compressible heave board under ground beams. This void allows the clay to expand without lifting the house.
Thameside Flood Defense
Properties near the Thames and the Hogsmill River face unique flood risks. Standard gravity drainage often fails when river levels rise. We install active defense systems to protect your property from back-surge.
Non-Return Valves
Automated heavy-duty valves installed on the main sewer line to prevent river water or overloaded public sewers flowing back into your home.
Pumped Systems
For basements in KT1, we install dual-pump stations that lift wastewater up to the mains, essential when the water table is high.
Tanking
Multi-layer waterproofing systems (Cavity Drain Membrane) for existing basements in Kingston town center.
Planning Resources
Kingston Planning
The Royal Borough of Kingston's portal for planning applications and conservation area maps.
Visit Portal →Flood Map
Check the Environment Agency's live flood risk data for the Thames and Hogsmill.
Check Postcode →Thames Water
Apply for build-over agreements if you are extending near public sewers in Kingston.
Developer Services →