Attached To Neighboring Property

[Ben D.]

Well this is a weird one. I'm considering making an offer on a property next week that has one odd, questionable feature. It is a single family residence but apparently the previous owners were pretty tight with the next door neighbors as they have a roof/overhang that literally connects the two houses.

Has anyone ever seen anything like this before? (I haven't.) Thoughts on any legal problems that that could cause? It's kind of hard to describe but a section of roof is literally connected to both properties.