London Basement Conversion Company – Cavendish Basements

Our Services

Years of Expertise


Cavendish Basements employs a number of specialists, as well as waterproofing and site set up crews, who provide the manpower and expertise to undertake any size of basement construction project. Innovation has always been an integral part of Cavendish Basements’ philosophy; constantly pushing the boundaries of basement construction to meet clients’ growing expectations

Planning & Design

Cavendish Basements has a team of experienced and knowledgeable surveyors who can examine the structure and fabric of your building, to consider the feasibility of both the basement works and other proposed building works.
The surveyors will be able to discuss your proposals in detail, offering advice on the likely size and practicality of the space and in some cases will identify any particular design/planning issues.

Interior Design

Cavendish Basements provide interior and design management services for new and existing basement conversions. Working with clients throughout London, carefully sourced and chosen qualified professionals can create architectural concept drawings and complete specified plans for all living and work spaces, including: kitchens, bathrooms, bedrooms, adult living spaces and children’s playrooms.

What Our Clients are Saying

Don't just take our word

Sir Ian Lowson

Flood Street SW3

Cavendish Basements was contracted to construct and fit out a multimedia room for us that spanned the footprint of the property and garden. This involved taking rubble out through the drawing room in a specially constructed tunnel via conveyor belts.

It was done efficiently with as little dust as possible reaching the rest of the house. Sir Ian Lowson would like to add the following comments about Cavendish Basements:

“I found James a pleasure to work with and he supervised the work exceptionally well. He was totally honest and we provided him with a set of house keys. I would highly recommend Cavendish Basements.”

Mr & Mrs T

After an initial delay by some local planning complications, our basement is now finished and we are delighted with it. Thanks to James and all the team for their hard work.