We've decided to build our coop as soon as the rain lets up a little. I'm using an old shelf from a machine shop (is very strong use to hold lots of metal, had a piece of linolium on it). The floor plan will be 4x8 feet. I'm hoping that will be big enough, if not I'll either add on to it or build another. I've chosen to do a lean-to style of roof, and at this point I'm not doing shingles, but a fiberglass waved thingy (not sure of the name). The frame work will be done with 2x4s, and the walls will be OSB. I figured out cost of materials to be about $125 at Lowes, I picked up 2 gallons of paint at Lowes for $5 each, they were rejects, I'm hoping it'll be enough. One gallon is a rusty red color and the other a light grey. The door will be 2 feet wide, (about the same as our bathroom door). I'm adding 2 windows, they won't have glass in them but wire to let air in, I'll have window covers too. We're using a lot of cheap materials since only one person is working and we've got kids. As for the run, we're not sure of the over all size yet. We're going to build it with field fencing and 6 feet high so we can clean it easier. At the bottom of the run I'll also be adding chicken wire about 4 feet high, right now I've got a roll of 2 foot high 150 ft long chicken wire. The fencing frame is going to be 4x4s that we've got laying around and 2x4s.