Not 100% sure on exactly what you said you had to work with lol. Sorry.Ok Y'all.
Throw me ideas please.
This is the Bitty house I am needing to modify. It is TINY at just 3' deep and 4' wide.
I have a couple pieces of siding (small chunks) enough to add up to 11 inches in height. I think it needs the height to let moist air out easier.
I have it on legs now that give 20" of clearance under it.
Thinking of making one side wall hinged for cleaning. That or the front.....
I do have 2 pieces of 10' long 3' wide metal roofing and the cull 2x4's I got for this.
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The coop part is raised (I am short so just 22 inch legs). I have 2 pieces of siding measuring 22"x49" yes 49".Not 100% sure on exactly what you said you had to work with lol. Sorry.
if you're wanting to allow a little bit more airflow and keep it easy to clean since it is that low to the ground I would recommend having the top hinge that you can lift up for cleaning instead of having to get down and try to scrape out the front.
Or another suggestion if you have the materials would be to raise the entire unit a couple more feet off the ground and add an entire bottom layer to it making the coop part elevated.