Our garden is on a hill and is split into 4 levels, the top one being the driveway which is accessed via an access road at the back of the house. There's no parking at the front of the house. We want to extend our driveway by about 2 meters because we can only just about get two cars on it. The problem is the extending that driveway on the top level will take away some of our garden (which isn't very big as it is).
So I'm wondering if it's possible to extend the driveway but somehow keep the space underneath as a sort of summer house spot, with doors that open so that we don't lose too much space from the garden area. I don't know if this is possible and if so what sort of builders would be happy to do it - would I need an engineer or architect to work out how much weight could be put on the structure? If so it sounds very expensive. Not sure whether it's worth looking into.