I've started working on my coop that will sit beside my garage. I have a small city lot, so not a lot of room to work with. The coop is 6 feet wide by 3 feet deep (18 sq ft) It has external nest boxes 14 inches deep by 3 feet long (another 3+ square feet). The coop interior is about 5 feet tall and will have a couple of different roosts at different heights. The front of the coop opens up completely with 2 hinged doors for easy access and clean out. The screen panels on the run are removable so I can get a rake in there. I plan to use sand in the run. I have 5 chicks and hope they all survive and all turn out to be hens and no roosters. So does my coop sound like it will be large enough for 5 standard sized hens? They will also have a large run 22 feet long by 3 feet wide by 40" tall and some free-range time. UPDATE: Thanks all for the input on the size requirements. The build is coming along. Pictures are in my profile page, the link is in my signature below.