Can an existing FHA loan be assumed if you do not plan to occupy the property?
It depends on the language in the loan docs. It might be non-qualifying assumable, not likely but possible, or it might be qualifying assumable. It might not be assumable at all. Read the loan docs to find out.
Just about any loan can be taken subject to, which is a way of “assuming”, for lack of a better word, the loan without qualifying.