Funny, my buddy and I built a tree house squat in 2006 in Whistler. Made it through the Olympics and just keeps getting better. We used chloroplast for walls (waterproof and very light, mildew resistant also). The trick is to make the roof clear! We used Palruf, it is a clear ridged plastic. No mold, and you have natural light all day long. We made a high loft quilt that hooks onto the ceiling at night and keeps it nice and warm in the winter. We have a small wood stove that keeps the place nice and toasty. In a couple weeks we are going to have an outdoor movie night. I'm bringing a projector and laptop, from the side deck we will project the movie between two trees on a white tarp (bungied between). Trick is to have a water source near by and to stock pile wood. No one has found it yet. Always open and ready to be used. We even have a tree house sign in book if you do happen to find it. Our hope is that if it is found it will be found by respectful people. As my buddy says, "animals" don't walk. They drive up light a fire, leave garbage and leave. You can't drive up. We wanted something fairly accessible, no ferries!
