Last summer (2017) we expanded and built a 8’x 12’ coop. It took three days to complete and a few more to assessorize. We love it. The first year was great, we didn’t lose any chickens to predators. We have now expanded to 25 chickens and a rooster. We now use the original coop to raise chicks and relocate broody chickens.
Looks good but needs a lot more details on actual construction process. I see you added a materials list in the comments which is nice but a how to would be nice as well.