We live in Tempe but our backyard looks like a small, private park. We have grass, and multiple Chinese Elm trees. In addition to the treehouse, we also have a pool that lights up nicely at night with beautiful blue plaster. The treehouse itself features a large deck, a large stair with a 300 landing, and an interior room that is insulated & air-conditioned. The room itself is about 8x8 and approximately 6' high.
We also have a guest suite that's accessible with a commode, sink shower and room for changing or equipment.