CellarTech South West Ltd
Basement & Cellar Conversion
Basements & Cellars Supplied & Built
Serving Gloucestershire & the South West





Underpinning is a method of strengthening and stabilising the foundation of an existing building to facilitate a change of use of the property (such as the building of an extension or basement) or to provide extra piece of mind where the original foundation is no longer secure enough due to the excavation of soil, wear and tear etc.

 Our team of project managers, builders, structural engineers, electricians and gas engineers will ensure that your existing property remains structurally sound and that this piece of work is completed, quickly and with minimal fuss.

All our work is backed by our Company Guarantee and the materials used (we use John Newton Membranes – the best in the industry) carry their own 30 year guarantee.

Please contact us for a no obligation chat to discuss your needs.


Please click on thumbnails to enlarge images.

Images are taken from work carried out whilst trading as a different building firm.