Basement swimming pools in Mayfair.
Knightsbridge · SW1 · Knightsbridge townhouse, pool and wine roomCompleted work, photograph
Mayfair homes are mostly flats and listed townhouses. A pool depends on the building’s lower floors and its freeholder.
What a Mayfair pool depends on.
- W1K · W1J · W1S
- Mayfair’s postcodes, mostly apartments and townhouses.
- 56
- Conservation areas in Westminster. Mayfair is one.
- Grosvenor
- The estate owns much of Mayfair.
NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle basement swimming pools in Mayfair W1, 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.
Mayfair has few gardens. Its homes are apartments and townhouses, mostly Georgian or later. A pool hall can only go where the building has depth below it. That means a study of the whole building, not one flat.
City Plan Policy 43 supports reusing buildings, and Policy 44 protects listed detail. Mayfair is one of Westminster’s 56 conservation areas. The Grosvenor estate owns much of Mayfair. Its licence often sits beside the council’s consent.
Water above a Mayfair apartment is a risk for those below. So a pool hall gets a tanked room, a drained floor and leak detection. Plant is the hard part, since ducts must reach outside through an old building. We plan that route before the pool is drawn.
We refitted a Mayfair apartment room by room, with joinery by Cochrane Bespoke. We have not built a pool in Mayfair. Our Knightsbridge pool shows the work. One team designs, prices and builds it.
What the council allows in Mayfair.
- Council
- City of Westminster. The Mayfair Neighbourhood Plan, made in December 2019, applies too.
- Retrofit first
- City Plan Policy 43. Refurbishing and reusing a building is supported in principle.
- Listed buildings
- Policy 44. Work to a listed building must keep its special interest and period detail.
- Conservation areas
- Westminster has 56 conservation areas, covering 78% of the city. Mayfair is one of them.
- The estate
- The Grosvenor estate owns much of Mayfair. Its licence often sits beside the council’s consent.
- Plant
- Ducts for the pool hall must reach outside through the existing building.
Source: Westminster’s City Plan 2026, Policies 43 and 44, and the Mayfair Neighbourhood Plan. Read on 3 October 2026. Policies change, so we read them again for your address.
Work in Mayfair.
Knightsbridge·Townhouse
Knightsbridge townhouse, pool and wine room
A Knightsbridge townhouse nearby, with a marble lined pool.
See the project
Mayfair·Apartment
Mayfair apartment
Our Mayfair apartment, refitted room by room. The joinery is by Cochrane Bespoke.
See the projectCompleted work, photographs
What a basement pool costs in Mayfair.
£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.
These are two kinds of figure. The band is a rate per square foot, construction only.
The cost guide figures are whole project totals.
Fees, party wall costs, contingency and VAT sit outside them.
What Mayfair owners ask about pools.
In Mayfair
- Every service in Mayfair
- Interior design in Mayfair
- Luxury refurbishment in Mayfair
- Basement gyms in Mayfair
- Basement cinema rooms in Mayfair
- Basement golf simulator rooms in Mayfair
Pools nearby
- Basement swimming pools across London
- Basement swimming pools in Chelsea
- Basement swimming pools in Kensington
- Basement swimming pools in South Kensington
- Basement swimming pools in Holland Park
- Basement swimming pools in Notting Hill
- Basement swimming pools in Knightsbridge
- Basement swimming pools in Belgravia
- Basement swimming pools in St John’s Wood
- Basement swimming pools in Hampstead
- Basement swimming pools in Fulham
- Marylebone, Bayswater and Maida Vale
- Belgravia
- Knightsbridge
- Pimlico and Westminster
Further reading, from the journal
Can a Mayfair apartment have a private swimming pool?
Only if the building has depth below it and the freeholder agrees.
We study the whole building before we promise anything.
Does the Grosvenor estate affect a Mayfair pool hall?
Its licence often sits beside the council’s consent.
We prepare the drawings both parties need.
How do you stop a Mayfair pool leaking into the flat below?
The room is tanked, with a drained floor and leak detection.
Falls are set out so any water finds a drain.
Can a listed Mayfair townhouse hold a pool hall?
Work to a listed building must keep its special interest and period detail.
The plant and ducts are routed to leave the main rooms alone.
How are heavy pool parts moved into a Mayfair building?
Parts are cut down to fit the stair or lift, then joined on site.
A delivery plan agrees hours with the managing agent.
Tell us about your home in Mayfair.
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