If you log in on a floor tile you’re teleported to the nearest nature tile; this is to stop players from being able to hide characters in other people’s homes to steal their stuff and be essentially untraceable after once getting in.
Second though, don’t share a wall with a neighbor. There should always be a gap between your wall and theirs. If you build walls touching someone else’s buildings they can destroy those sections of your wall in 4 hits and break your house.