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About Us

OBS Basements have been trading in London for over 10 years. primarily a building company, we moved into basement conversions as demand increased. Since then we’ve carried out all types of basement conversion and pride ourselves on not only the quality of our work, but also the standard of our customer service. Have any type of major renovation on your property can be a stressful process, and we pull out all the stops to ensure your project is carried out in the most professional and convenient manner. Feel free to contact us with any questions regarding the full process.

Services Provided

Basement Conversion, Basement Waterproofing, House Extensions, Sump Pump Installation, Waterproofing

Areas Served


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2 Ideabooks

London, Greater London EC2A 4NE
United Kingdom
Typical Job Cost £150,000 - £1 million
As a rough guide, to dig out the basement and leave to a water tight concrete shell, the cost is around £1750 per m2.
United Kingdom
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