So I started with my old coop (empty about 15 years). 5x8 or so. Got a few hens, then a few more. Enlarged the run, got a few more. Finally decided that while selling eggs is fun, I would LOVE to sell hatching eggs and baby chicks, so we needed a way to separate breeds occasionally at least. At this point, a friend who raced pigeons passed away. His widow tried to sell his racing pigeon loft, but was unsuccessful. I asked how much, she told me if I could get it moved, it was mine. $600 later (moving costs) plus several trips to prepare the building, and finally it's here! Interior is divided into 4 sections, each one 12' x 6'. Each has it's own window and door on the eastern side, and we are adding windows on the western side. The run is being built, 30' x 40', with 2 feet of sheet metal, the 4' of wire fencing. Hoping next month to add poultry netting over the top. The birds have been free ranging during the day, but will be confined for the time being, with some breeds staying confined until we get the pen set into several runs. Interior is pretty simple, with perches and poop boards. Nest boxes not added yet, but birds are still mostly in the other building until the run is finished (hoping to get a good bit of it done tomorrow).