I was looking at a Victorian terraced house which is for sale, and in the 2-storey extension, the extension being about 50+ years old, there are a number of external cracks visible. A couple around a window, and also on other parts of the upper external wall. The extension is rendered over.
I was wondering who would be the best person to tell me something about these. To tell me if they are just cracks on the rendering, or they are more serious.
Should I be enquiring with a surveyor (what type?), or a builder?