Underpinning and Foundation Installation in Reading
Services for House Extensions and Basements

Extension projects often require underpinning as well as foundation installation. Underpinning is also a common inclusion of basement conversions and property renovations. The groundwork contractors at Cornerstone Foundations UK offer a full range of groundwork, foundation and underpinning services for extensions, renovations, basements and other projects in Reading and the surrounding areas.

If you need restricted access piling, augered piling, any other type of piling, subsidence treatment, bulk excavation, basement construction or other specialist groundworks, get in touch with our team today. We are ready to provide bespoke solutions.

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Extension and Basement Foundations

When building an extension or basement, new foundations must be installed to support the structure. A structural engineer will assess the best type of foundations for the project, and our groundwork contractors will work with them to install quality foundations tailored to the ground conditions and load.
Foundation installations for extensions and basements commonly involve one of the following:
Site access for extensions is often limited due to the proximity of neighbouring buildings. In these cases, we can offer restricted access piling, which is ideal for smaller and sensitive sites in Reading and the surrounding areas.


Extensions and basement conversions often require underpinning services to strengthen existing foundations. At Cornerstone Foundations UK, we use various underpinning methods, including piled underpinning, to give foundations the support they need to withstand additional loads. Again, we work alongside structural engineers and architects to deliver ideal solutions for any site and construction specification.


As experienced groundwork contractors, we provide an extensive range of groundwork services for property extensions, basement conversions and basement construction projects. Customers in Reading and the surrounding areas can rely on Cornerstone Foundations UK for all the following services, delivered on time and at competitive prices:
We also provide the above services for all other domestic and commercial projects.
Cornerstone Foundations UK - Experts in Subsidence
For foundation installations and underpinning services in Reading, please call 07436 364091 (Michael), 07887 836811 (Paul) or 0118 2030889 (Office).