I am thinking of having a second storey extension built on top of an existing extension. The problem I have is that I don't know what the foundations are like on the existing foundation to see if they will support a second storey.
The local Building Control department have told me get a Trial/Pilot hole dug and they will come out and inspect the foundations.
I have been told the make sure the hole is on one of the corners of the existing extension so that both sides of the foundations are exposed and visible.
As I have never done this before, can anyone suggest the best way to this, what to do and what to avoid, any pitfalls to look out for. Do I need to be a set distance away from the walls?
I assume (on the basis the ground id sodt enough) a spade and the likes will do, i.e. no drill/diggers required
Any comments appreciated M