I bought a coop similar to that size about 8 years ago for my first 4 chickens. I placed in in a 15x10 fenced in area and they all did just fine, until they flew over the fence and I lost 3 and then had to give away the last one. That coop sat unused through the heat, rain, snow and freezing cold until this year when I decided to try again. The roof is a bit warped but still water proof and I have 4 chickens in there again. They seem happy as they really only sleep in there and free range in a 20x20 higher fenced area now. This time though it is only temporary as we will be turning and old shed into their coop, hopefully before winter.