Yeah, my dad and I built some coops years ago, took a huge amount of time and tools and skill (not mine!). I don't know where to start with really making things: my hens and geese live in two stacked tatty boxes, with a metal roof and some doors/latches added. Its nothing like perfect or pretty, but I wouldn't know where to start with building one and I don't have £££ to spend on proper houses. My broody hen is in an old ferret hutch and run, my brooder is a single bed sted with wooden pannels around it and fire guards as a roof; my dog sleeps in a wardrobe, my ferrets used to live in a tv cabinet with a cage nailed on the top - you get the idea, I can cut a new door and screw in some hinges, but the rest is a mystery to me
so, alas, my hen houses will probably never graduate to something as pretty as the designs.
Everyone seems happy though and at least they have plenty of space