My coop I built but modified quite a bit. It was still helpful to have the dimensions to go by:) This is the free Purina Mills Coop plan. Nest boxes are too high and sky light is no good for sunny climates but overall it's a nice coop.
Oh my goodness, what a great set up for a chicken coop! The box on the end is where they collect the eggs so there's no fear of getting your eyes pecked out by a cranky roosting hen! :) Her site has other amazing ideas as well