New and enlarged basements beneath Holland Park's houses — engineered to RBKC's strict basement policy, with Basement Impact Assessment, underpinning, waterproofing, party wall and a construction-management plan, all in-house.
Speak to the studio directly: 020 8054 8756
The Royal Borough of Kensington & Chelsea operates one of the strictest basement policies in the country, and Holland Park sits squarely within it. New and enlarged basements are generally limited to a single storey, to no more than half the garden, and are tightly controlled near listed buildings and trees — and every scheme needs a Basement Impact Assessment, a structural method statement and a construction-management plan.
We handle that process end to end: the feasibility and BIA, the planning application, the underpinning and structural engineering, the waterproofing to tank standard, the party wall awards with the neighbouring houses, and the on-street logistics that RBKC and the neighbours expect. It is high-risk, highly-regulated work — which is exactly why it should sit with one accountable team.
We assess feasibility for your specific house and garden first, against current RBKC policy.
RBKC policy, ground risk and the neighbours govern every basement in W11.
Among the strictest in London — generally single-storey, limited garden coverage, and tightly controlled near listed buildings and trees.
RBKC requires a BIA and structural method statement covering ground, water and neighbouring stability — prepared as part of the application.
Underpinning and excavation are engineered in-house and governed by the Party Wall etc. Act 1996 with the neighbouring houses.
Tanked, drained waterproofing and a council-agreed construction-management plan for the constrained W11 streets.
The full basement package, engineered and delivered under one contract.
Assessing what RBKC policy allows and preparing the Basement Impact Assessment and structural method statement.
The planning application and heritage case for a basement in a conservation area.
Underpinning, retaining structure and the new slab, engineered in-house with Building Control.
Notices and awards with the neighbouring houses on both boundaries.
Tanked, drained waterproofing to protect the new space for the long term.
Agreed hours, deliveries, spoil removal and protection for the street and neighbours.
Habitable fit-out — light-wells, services, finishes — to a prime standard.
Two-stage snagging and a clean handover with conditions discharged.
We engineer and build basements beneath the houses of Holland Park, within RBKC's basement policy.
Holland Park sits within the Royal Borough of Kensington & Chelsea — see our Holland Park area page and South West London refurbishment overview.
Book a no-obligation consultation at 2 Eaton Gate in SW1, at our Hampstead studio, or at your property. We will give you an honest read on approvals, programme and budget band — in pounds sterling — before you commit.
Site visit · approvals read · outline budget band (GBP) · programme indication. No obligation.
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