My dad built a tree house about 12 years ago and since we don't really play in it anymore we're turning it into a chicken coop. We are surprised on how sturdy the tree house still is after all these years, but we're replacing wood here and there. My dad said it's about 100 square feet which I think is quite enough room for 5 chickens. Here are some images: Chicken wire will be put over all open areas. I wish I take a whole picture of the inside, but it didn't fit in the camera. We're going to take the electrical wires and TV out (unless the chickens would like to watch TV.) Underneath will be the run. We'll put a opening under the tree house along with a ramp for the chickens. I was wondering if the chickens could roost up here, or is it too high? Will the chickens use a ramp up there because we'll be using sand as bedding and I don't want them to jump down and possibly hurt their feet. Though, these will be perfect for hanging their feeders and water. Well, that's all for now. As you can see we've changed the entrance into the tree house, there will be a door that I go through in. I'll update with more pictures as we progress with this project... unfortunately it won't be very often since my dad works a lot during the week, but I won't be getting my baby chicks until April so we have plenty of time to finish this.