When Is A Treehouse No Longer Just A Treehouse?

Consumerist: Did the treehouse of your childhood dreams include WiFi, cable TV, a mini fridge, fireplace, deck and air conditioning? Maybe not, but does having the space to fit all those amenities in a homemade structure residing in a tree mean it’s still a treehouse, or is it more like an elevated guest house? One town is seeking to define what a treehouse is, to keep people from going overboard with their aerial retreats.