So I was planning on building a new coop for the hens this spring, but then I cleaned up an existing shed. Low and behold there is a lot of free space once things get cleaned up. I was able to take the back 8 feet of a 14 x 20 storage shed and convert it into a walk in coop. It's worked great so far. I started with vinyl flooring from a salvage shop for easy cleaning, then built some nesting boxes, a roost, and drop-door that opens/closes from the outside of the door inside the shed. I'm still working on converting the rest of the shed into an animal supply area. Currently they have a 10' x 10' outside run, but I'm hoping to free range them soon.