Do I need my neighbor to sign anything to close?

A neighbor generally does not need to sign anything for your closing unless there is a shared driveway, fence, easement, or boundary agreement tied to your property that the title search turns up. If a survey reveals an encroachment, like a fence or structure crossing the property line, resolving it sometimes does require a signed agreement between neighbors before a title company or attorney will clear the closing. Your closing attorney's title work will flag any of these issues well before closing day. Joel Boss can tell you early if a specific property has this kind of complication.