Thames & Newcastle

Basements

As one of the most technically demanding aspects of construction, basements require specialist expertise to avoid costly delays, increased costs and compromised quality. At Thames & Newcastle, we eliminate these risks with our dedicated in-house basement team.

By engaging with project teams in the early design stages, we deliver practical, buildable basement solutions from day one. From underground extensions to luxury basements housing swimming pools and spas, we have the skills to seamlessly integrate durable and functional living spaces.

In-house expertise

Unlike companies that rely on subcontractors, we manage every stage from basement design to installation, ensuring seamless integration with the rest of the build.

By keeping everything in house, we deliver:

Our groundworks specialists have been delivering basement projects across London and the South East for more than three decades. Whether working in tight urban spaces or overcoming logistical challenges like pedestrian access and restricted parking, their expertise minimises disruption ensuring smooth project execution. 

Industry-leading waterproofing

We don’t just build basements – we make sure they stand the test of time.

Our team includes certified surveyors in structural waterproofing, and we have earned recognition as a Newton Specialist Basement Contractor (NSBC). Newton is the UK’s leading independent supplier of structural waterproofing systems. As an approved NSBC contractor, we are trusted to design and install robust waterproofing systems, adhering to strict workmanship criteria.

To discuss your basement project, contact us.