Recently I've purchased DYI chicken coop plan with an included material list, but I'm not so sure if it's made according to the US standards and if I'll be able to find all materials in some shop in Houston where I live.
Unfortunately, I can't upload any pictures here, so please check the pdf I've put at:
US standards for a chicken coop?? Anyhow it's impossible to tell for sure without the completed plan picture, but it looks like a lot of weird- sized lumber, and therefore, more work than it needs to be.