This extension project features deep basement foundations
So you’ve got a great design in the bag and you’re keen to crack on with your extension. First things first: you need to decide how to build it, and that process starts with the foundations. Specifically, you need to understand what supports the existing house. This will have a major impact on the design of the new footings. Combine this with knowledge of soil conditions, trees, service/drain locations and more, and your team can plan the best solution for your project.
Typical existing foundations