Quote Originally Posted by Avidria View Post
Well this is an ancient post but I'd actually been wondering the same. There doesn't seem to be much rhyme or reason to how the ranks are decided either... or at least, some seem to make less sense than others imo. Makes me wonder how SE decides on it.
It's just better locations. Waterfront, close to shops, etc... costs more. The plots are functionally identical.
Here's a map of grades




can see all the grade 1 is waterfront, the highest grade mansion is the one next to the hotspring,