Basement construction in Notting Hill.
Chelsea · SW3 · Chelsea basement and extensionCompleted work, photograph
Basements under Notting Hill terraces and villas, within Kensington and Chelsea’s rules. Engineered, monitored and built by one team.
A Notting Hill basement under one storey.
- CD11, 2024
- One storey, under half of each garden
- 1 metre
- Of soil over any garden basement
- 7 days
- A budget estimate, typically
NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle basement conversion and construction in Notting Hill W11, under one contract. A basement runs £450 to £780 a sq ft, construction only. Call 020 7731 6841, and a budget estimate typically follows within seven days.
Notting Hill is stucco terraces, crescents and communal gardens.
Since April 2016, every basement here needs full planning permission.
The borough allows one storey, under no more than half of each garden.
Listed houses cannot have a basement at all, vaults included.
We check the address first. Then we design, engineer and build.
What the council allows in Notting Hill.
- Council
- Royal Borough of Kensington and Chelsea, under its Local Plan adopted in July 2024.
- Policy CD11
- One storey only. A storey is about three to four metres, floor to ceiling.
- The garden
- No more than half of each garden. The garden left over stays as one area.
- Listed houses
- No basement under a listed building, and none under its vaults.
- Planning
- The borough-wide Article 4 direction, in force April 2016, removed the permitted route.
- Method statement
- A Construction Method Statement goes in, signed by a chartered engineer.
Source: Kensington and Chelsea’s Local Plan 2024, and the Norland Neighbourhood Plan. Read on 3 October 2026. Policies change, so we read them again for your address.
Built below ground in the same borough.
Chelsea·Townhouse
Chelsea basement and extension
A new basement under a Chelsea house, in the same borough.
See the project
Kensington·New build
Kensington new-build houses
Two houses in the same borough, three floors down, consented before CL7.
See the projectCompleted work, photographs
What basement conversion costs in Notting Hill.
£450 to £780a sq ft, construction only. Our basement band.
£180k to £300kConverting an existing basement. A project total, from our 2026 cost guide.
£500k to £900k+Digging a new basement. A project total, from our 2026 cost guide.
A communal-garden terrace often means tight access and careful logistics.
The band is per square foot, construction only. The guide figures are project totals.
Fees, party wall costs, contingency and VAT sit outside both.
Open the calculatorThe 2026 cost guideBasement costs in full
What Notting Hill owners ask about basements.
In Notting Hill
Basements nearby
- Basement conversion across London
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- Basement conversion in Chelsea
- Basement conversion in Kensington
- Basement conversion in St John’s Wood
- Basement conversion in South Kensington
- Basement conversion in Knightsbridge
- Basement conversion in Belgravia
- Basement conversion in Holland Park
- Basement conversion in Hampstead
- Kensington
- Marylebone, Bayswater and Maida Vale
- Chiswick
Further reading, from the journal
Can I build a basement under my Notting Hill house?
Usually, if it is not listed. Every basement needs full planning.
Policy CD11 allows one storey, under half of each garden.
We check the address before anything is drawn.
Why can a listed Notting Hill house not have a basement?
Policy CD11 rules out digging under listed buildings.
That includes their vaults under the pavement.
A listed house can still be refurbished, with listed building consent.
How much soil must cover a Notting Hill basement?
At least one metre, under any part of the garden.
A sustainable drainage system is also required.
A pumped device protects against sewer flooding.
Does the Norland Neighbourhood Plan cover basements?
Not with its own policy. It sits alongside the borough’s CD11.
Its Policy N3 limits rear extensions and protects garden space.
What goes in with a Notting Hill basement application?
A Construction Method Statement, signed by a chartered engineer.
A site investigation of the ground and groundwater.
A Construction Traffic Management Plan for the street.
Tell us about your home in Notting Hill.
Your name and one way to reply are enough. It goes straight to the studio.
- Already have an architect or designer? We build to their design. Working with your designer
- An NDA on request, and your home is never published without your consent. How we work in confidence