Basement living and leisure spaces in London
London basement design, construction and fit-out for family rooms, home offices, guest suites, gyms and leisure spaces.
Create a lower floor you look forward to using: a beautifully finished family lounge, a private guest suite or a space for exercise and relaxation. Basement Structures brings basement construction, building services and interior finishes together for homes across London, Greater London and the Home Counties.
Discuss your projectA refined interior comes from materials and details that work together. Floor finishes, wall treatments, doors, fitted storage and lighting should suit the proportions of the room and the character of your home. We develop the fit-out around those choices, from a restrained contemporary interior to a warmer scheme with timber and textured finishes.
We agree the specification and scope before construction, giving the structure, services and finishing work a clear shared brief.


The rooms need to feel comfortable as well as look good. Waterproofing, heating, ventilation, lighting and acoustic requirements belong in the design from the outset. We plan service routes and maintenance access alongside the ceilings, walls and joinery, so practical needs have a place within the interior.
Our fit-out and finishing service carries those decisions through to the completed rooms.
A cinema can bring family evenings together. A gym can make exercise part of the day. A guest suite can give visitors privacy, while a lounge creates somewhere to host friends. We build around your chosen rooms, establishing layouts and services before the interior takes shape.
For a larger leisure scheme, our basement swimming pool service brings pool construction into the wider basement project.
Our Kensington project included underpinning, excavation and reinforced concrete basement works. In Hampstead, the work included piling, groundworks and a waterproof basement with a steel frame for a swimming pool.
Bring us your room ideas, architectural plans or interior references. Start your luxury basement project and establish a route from the first design decisions to the finished space.
No. A smaller basement can make an excellent guest suite, office or snug. Clear room proportions, useful storage and well-judged finishes often matter more than trying to fit too many uses into the available space.
Yes. The staircase, doors, joinery, colours and material choices can follow the character of the rooms above. You can also give the basement a different mood while maintaining a considered connection through shared details.
Send us the drawings and specification with your enquiry. We can review the basement construction and fit-out requirements with your appointed design team, including the relationship between structural details, service routes and the proposed finishes.
Major choices should be established while the design develops. Floor build-ups, bathroom layouts, lighting and fitted joinery affect construction and services. Settling them early helps the finished interior follow a coherent scheme.
Yes, a pool can form part of a basement scheme. Its structure, waterproofing, drainage, environmental systems and maintenance access need their own design alongside the adjoining rooms. Our swimming pool service covers both new-build and retro-fit basement projects.
London basement design, construction and fit-out for family rooms, home offices, guest suites, gyms and leisure spaces.
Turn your basement shell into finished living space. London basement fit-out with room layouts, heating, lighting, plumbing, joinery and interior finishes.
Basement design and build for London homes and developments. Connect excavation, structure, waterproofing and fit-out in a clearly defined construction package.