Hi there, Dodgeman Well, if it turns out to be a hit,maybe you'll have to build one for your kitties! I've got about 10 people committed to helping me. I checked with my city hall and they said that as long as it is 6' or under I don't need a permit, so I'm going to keep it a hair under 6ft. My biggest challenge will be the slope of my back yard since my enclosure will be headed down hill. I haven't found anyone yet who has attempted this on a slope. My neighbors seem pretty supportive so I'm hoping to not have too many problems. Also, I am planning to grow something like morning glories over the enclosure so it will look more attractive to my neighbors.