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About Us

Today, Knowles designs and builds hundreds of basements in central London and the home counties every year and is considered a leading authority in basement construction. With an exceptional track record for delivering projects on time and in budget, Knowles offers the best value in this highly specialised field. Knowles operates a dependable, financially strong and leading London construction business which has been awarded ASUCplus membership. Knowles is the trusted partner for some of London’s most noteworthy architects and property developers.

Services Provided

Basement Conversion, Basement Design, Basement Waterproofing, Damp Proofing, House Extensions, Waterproofing, Wine Cellar Design, Wine Cellar Installation, Shell and Core, Basement Construction, Ground Works and RC Frames, Underpinning, Piling, Structural Alterations, Temporary Works, Demolition

Areas Served



Knowles is Considerate Constructors certified and well-known for prioritising positive relations in the local area on all projects. Knowles keeps neighbours up-to-date, works within normal business hours and makes sure the lines of communication stay open throughout the duration of the project.


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Business Details

Business Name

Knowles Basements

Phone Number

020 7313 4169


105, Olympia Mews
London, Greater London W2 3SA
United Kingdom


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United Kingdom
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