London · UK introductions
Basement Conversions in London
Basement excavations and conversions in London. Policy, neighbours and quotes from specialists — we do not excavate basements ourselves.
Basement extensions are common in high-value central boroughs but are heavily controlled. Many councils have detailed basement policies covering depth, extent, construction management and neighbour impact.
Expect planning permission, party wall procedures, structural engineering and often a construction management plan. Flood risk and archaeology can apply in parts of London.
Home Builders introduces homeowners to independent specialists who advertise with us. We do not design or dig basements.
London boroughs
More boroughs: all 32 London boroughs & the City.
Questions
Do basements always need planning permission?
Almost always in London. Many boroughs also require detailed method statements and limit multi-storey basements.
What should I check before a basement project?
Council basement policy, party wall awards, structural design, insurance and neighbour consultation. Get specialist quotes.
Request quotes · UK introductions
Request quotes for basements
Tell us about your extension, loft or renovation anywhere in the UK. With your consent, we pass your enquiry to up to 3 independent builders who advertise with us, so they can contact you with quotes. We do not carry out building work ourselves.
- Free to use, no obligation
- Up to 3 builders, only with your consent
- Always check each builder’s insurance, references and written quote