I had concerns about the flat roof at first, but I haven't had any troubles with it.
If I remember correctly, the materials for the coop and the run were approximately $600. I did have some materials left over that I used to start a Chicken Tractor.
To answer aflad2012's questions. My chickens don't seem to mind the snow. But I do spread straw around the run during the muddy season. I also added an exterior pop door that can be opened by pulling a rope. I close them in at night when it drops below 50 degrees. I love watching them race out...
Dark Dozens
Buff Orpington Chicks - 2 days old
The Coop and Run
Buff Orpington Chicks - 2 days old
Buff Orpingtons - 4 weeks old
Buff Orpingtons - 11 weeks old
Buff Orpingtons - 19 weeks old
First Egg - 25 weeks
Buff Orpington - 1 1/2 years old
Buff Orpington Chicks - 2 days old
Buff Orpington Chicks - 2 days old
Buff Orpington Cockerel - 4 1/2 weeks old
Buff Orpingtons - 11 weeks old
Buff Orpingtons - 19 weeks old
First Buff Orpington Egg - 25 weeks old
Partridge Cochins...