Another idea for those with limited building experience. We had a local high school building trades program build our 5 x 6 coop for us. The kids helped with the design and all we had to pay was for the materials. Some of the students had chickens at home and had some great ideas and suggestions for the design. I think their program now builds a few different size/style coops and sells them in the community. They built it like they would a home construction and did a great job.