Here is a photo of my coop. I needed a coop very quickly and put this together in 6 hours. That was 2 years ago. Even with the end being open all the time, I still have moisture problems in the winter.
It is built on a 4 x 6 treated base. I was planning on building a permanent structure on that, but that has not worked out so far. During rain or snow with a southern wind, I have an old blanket that gets clipped to the cattle panels to keep out moisture but allow air to pass through.
It is not pretty, but it was fast to build, pretty cheap, and has worked well for the most part. I was surprised how well the tarp has lasted and how comfortable it is in there in the winter. I do have an infrared heated that gets turned on over the roost when temps drop below -10.

It is built on a 4 x 6 treated base. I was planning on building a permanent structure on that, but that has not worked out so far. During rain or snow with a southern wind, I have an old blanket that gets clipped to the cattle panels to keep out moisture but allow air to pass through.
It is not pretty, but it was fast to build, pretty cheap, and has worked well for the most part. I was surprised how well the tarp has lasted and how comfortable it is in there in the winter. I do have an infrared heated that gets turned on over the roost when temps drop below -10.