We are ready to buy one of these to start our coop but before we do I'm looking for some feedback from my fellow Arizonans:
We decided on this because it's metal and lumber is prohibitively expensive around here. Also, we can disassemble it and take it with us when we move. Metal will also last longer than wood in our desert environment.
As you can see this design needs some alterations to become predator proof. The entire thing will be completely enclosed in 1/4" hardware cloth, including the floor as we have a huge ground squirrel population. We're also adding our own door.
The coop is 6'3" (important to me; I'm 6'1") in the walk-in area. With the extension it'll be a total of 172 sq. ft. for 10-12 chickens. The door faces south, nest boxes are on the north side.
Here are some examples of how we plan to modify it. Please excuse my lousy Sketchup skills; Sketchup and I are mortal enemies.
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Here are more detailed illustrations of the hen house. I'm posting this here instead of in the coop design section because I think it's difficult to understand our crazy climate and needs if you don't live here. I don't mean to insult anyone by that. It's just tough to grasp the combination of 20F - 115F temperature swings, sideways monsoon rains when it's 100F, microbursts, snow, 1% humidity, etc. unless you've lived through it all.
The proportions of the hen house are somewhat constrained by the geometry of the run. It's 6' wide by 4' high and 4' deep. The legs are 1'6". We tried positioning it outside the coop but decided we wanted the weather protection and security of it being inside. Only the nest boxes are outside, for easy egg retrieval.
The silly white rectangles on the sides are my version of soffit vents, the green part in the inside is vinyl flooring for a deep litter system. The ramp is removable.
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We tried to design a hen house that can be opened or closed up in increments, to match the weather and the hens' needs. The bottom door in the front only drops down for deep cleaning. The top/ceiling of the hen house can be removed entirely.
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