Coop on Trailer

[Goon]

I'm want to build a coop on a trailer, I'm currently in the resource gathering phase. Does anyone have any good designs I can go off of. I'm thinking around 6x5x5 for the size, not including the roof

 

[Percheron chick]

Start with the trailer. How big is the frame? Never go smaller than the frame. Check CL. There are often non road worthy, non titled campers available basically for free that might just need newer tires, $100 and some imagination to have a second productive life as a chicken coop.