Basement gyms in London.
Chelsea · SW3 · a basement gym, mirrored and litCompleted work, photograph
Private gyms below London houses, with spa rooms beside them. Built by one team.
A gym is height, a quiet floor and air.
A basement gym is a private gym below the house, often with spa rooms. We are NU Projects, design and build in Fulham SW6 since 2010. A basement runs £450 to £780 a sq ft, construction only. Call 020 7731 6841, and a budget estimate typically follows within seven days.
A home gym asks three things of a basement. Height, a floor that takes impact, and air.
Height comes first. Overhead lifts and a rack need more than a standard ceiling. We set it on the drawings.
Weights and treadmills send sound into the house. The floor is isolated so the rest of the house stays quiet.
A gym needs fresh air and cooling, without daylight to help. We design the ventilation with the room.
Many owners add a steam room, a sauna or a treatment room beside it. Each needs its own drainage and air.
One team designs, prices and builds it. Joinery for storage and mirrors comes from Cochrane Bespoke, where specified.
What the work includes
- Ceiling height set for overhead movement
- An isolated floor for weights and impact
- Fresh air and cooling designed in
- Mirrors, lighting and storage joinery
- Steam room, sauna and treatment room beside it
- Sound kept from the house above
- Basement gyms by area
- Basement gyms in Chelsea, Basement gyms in Kensington, Basement gyms in South Kensington, Basement gyms in Holland Park, Basement gyms in Notting Hill, Basement gyms in Knightsbridge, Basement gyms in Belgravia, Basement gyms in Mayfair, Basement gyms in St John’s Wood, Basement gyms in Hampstead, Basement gyms in Fulham
- What it costs
- See a range in a minute. Then send us the address for a proper number. Open the calculator
- Where we work
- Fulham, Chelsea, Kensington, Knightsbridge, Belgravia, Mayfair, Notting Hill and Holland Park, Chiswick, Wandsworth, Putney and Barnes, Hampstead and St John’s Wood, Weybridge, Cobham and Oxshott, South Kensington, Marylebone, Bayswater and Maida Vale, Pimlico and Westminster, Battersea and Clapham, Richmond, Twickenham and East Sheen, Islington, Highgate and Primrose Hill, Greenwich, Dulwich, Camden, Wimbledon, Bermondsey, Brixton, Ealing, Acton, Hammersmith and Brook Green, Earl’s Court, Queen’s Park and Kensal Rise, Fitzrovia and Bloomsbury
The floor is isolated first. The house above never hears it.
From the brief to the first session.
- 01
How you train
Equipment, heights and the spa rooms you want, listed first.
- 02
Height and floor
Ceiling height and the isolated floor fixed on the drawings.
- 03
Air and cooling
Ventilation sized for a room with no windows.
- 04
Consents
Planning, building control and party wall notices handled.
- 05
The cost plan, then one contract
A price built line by line. Provisional sums named.
- 06
Build and hand over
A report every week, then a defects period and aftercare.
Ten checks before you appoint a basement gym builder.
- 01
Finished gyms below ground
Ask to see completed basement gyms, not showroom photographs.
- 02
Ceiling height
Ask how the height suits your heaviest lift.
- 03
Floor isolation
Ask how impact noise is kept from the house.
- 04
Ventilation
Ask how fresh air and cooling reach a room with no windows.
- 05
Spa rooms
Ask how a steam room or sauna is drained and aired.
- 06
Equipment loads
Ask whether the floor is designed for your racks and weights.
- 07
Lighting
Ask how the light works for training and for calm.
- 08
Storage
Ask where the kit lives when it is not in use.
- 09
Sound from outside
Ask how plant noise is kept out of the room.
- 10
One contract
Ask whether design, structure and fit-out sit with one team.
Gyms and spa rooms we built below ground.
What owners ask before building a gym below ground.
Further reading, from the journal
How high should a basement gym ceiling be?
High enough for overhead lifts and your equipment.
We set it on the drawings, before the dig is fixed.
Will a basement gym be noisy in the house above?
Not if the floor is isolated and the ceiling treated.
We design both from the start.
Can a basement gym have a sauna or steam room?
Yes. Each needs its own drainage, air and waterproofing.
We plan them beside the gym, not after it.
How is a windowless gym kept fresh?
Mechanical ventilation brings in fresh air and takes stale air out.
Cooling is designed with it for hard sessions.
Tell us about the gym.
Your name and one way to reply are enough. It goes straight to the studio.