Basement cinema rooms in Belgravia.
Chelsea · SW3 · Chelsea terraced houseCompleted work, photograph
Belgravia ground can be wet, and a cinema is full of electronics. We design for the worst day, not the average one.
A Belgravia cinema, built dry.
- Wet ground noted
- The neighbourhood plan records a high water table.
- Listed order kept
- Original room layouts must not be unbalanced.
- One team
- NU designs, prices and builds.
NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle basement cinema rooms in Belgravia SW1, 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.
Belgravia is cream stucco terraces, built tall on a regular plan. The lower floors are deep, with vaulted passages under the pavement. A cinema can take the old service floor. That works if the structure allows.
The Belgravia Neighbourhood Plan favours upward additions and discourages basements in mews. Westminster allows one storey below the lowest original floor. Listed houses must keep their original order of rooms. So a cinema here is often a refit of an existing lower floor.
The ground is wet in parts, and basements flooded in July 2021. Water must never reach the equipment. We drain the cavity, add pumps and raise the electronics off the floor. Sound treatment goes on only after the walls are dry.
We built a basement gym under a Chelsea townhouse. In a Chelsea terraced house we fitted a green panelled media room. One team designs, prices and builds the dry structure and the room.
What the council allows in Belgravia.
- Council
- City of Westminster. Kensington and Chelsea’s CD11 does not apply here.
- Extent
- City Plan Policy 50. One storey below the lowest original floor, under half the garden.
- Listed houses
- A basement must not unbalance a listed building’s original order of rooms.
- Ground
- The plan notes a high water table in parts. Basements flooded there in July 2021.
Source: Westminster’s City Plan Policy 50, and the Belgravia Neighbourhood Plan of March 2024. Read on 3 October 2026. Policies change, so we read them again for your address.
Rooms we have built nearby.
Chelsea·Terraced house
Chelsea terraced house
A media room panelled in deep green with a fitted screen, in Chelsea.
See the project
Chelsea·Townhouse
Chelsea townhouse, full refurbishment
A cinema room with a deep corner sofa and copper shelving, in Chelsea.
See the projectCompleted work, photographs
What a basement cinema costs in Belgravia.
£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 Belgravia owners ask about cinemas.
In Belgravia
- Every service in Belgravia
- Luxury refurbishment in Belgravia
- Interior design in Belgravia
- Basement construction in Belgravia
- Architects in Belgravia
- Basement swimming pools in Belgravia
- Basement gyms in Belgravia
- Basement golf simulator rooms in Belgravia
Cinemas nearby
- Basement cinema rooms across London
- Basement cinema rooms in Chelsea
- Basement cinema rooms in Kensington
- Basement cinema rooms in South Kensington
- Basement cinema rooms in Holland Park
- Basement cinema rooms in Notting Hill
- Basement cinema rooms in Knightsbridge
- Basement cinema rooms in Mayfair
- Basement cinema rooms in St John’s Wood
- Basement cinema rooms in Hampstead
- Basement cinema rooms in Fulham
- Knightsbridge
- Chelsea
- Pimlico and Westminster
- Mayfair
Further reading, from the journal
Can a Belgravia house with vaults have a cinema room?
Often yes, using an existing lower floor rather than a new dig.
The vaults and structure are surveyed first.
How do you protect a Belgravia basement cinema from flooding?
We drain the wall cavity, fit pumps and lift the electronics clear.
The design assumes water will come.
What does a Belgravia home cinema cost to build?
Our basement band is £450 to £780 a sq ft, construction only.
A listed house often needs more design and monitoring.
Is a Belgravia mews house suited to a cinema?
The neighbourhood plan discourages new basements in mews.
A refit of an existing lower room is the likelier route.
How does a Belgravia cinema fit a listed townhouse?
The room must not unbalance the original order of rooms.
So it is placed where the house can take it.
Tell us about your home in Belgravia.
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