Okie doke, this is what we've been working on for the past couple weekends. It is for our 3 chicks (bantams + an Ameraucana) with room for a couple more. Never built one before, and we've been kinda winging it after pouring through these forums and many trips to Home Depot.
It's 4x10, and the frame is 4ft tall (well, 4ft studs + thicknesses of base) with an extra 1 foot rise in the front for roof slope. 8 and 10 foot lumber is easy to find. I will have to hunch over a bit to get inside, but made the executive decision for this to keep the profile of the coop beneath our privacy fence height. It is light enough for us to pick up with ease or me to drag it around with some difficulty, and I want to keep it that way in case of something. We originally intended to make a more traditional enclosed coop, but looked around, lots of other local coops had a 3 sided shed style. Decided partway through building to go with that.
What's left is to build the main door, attach the hardware cloth ($$), and put on the roof ($$). Hardly anything at all. Total cost will end up in the $400 range: $100 for hardware cloth, $100 roof panels/special attachments, $200 lumber (mostly cedar + PT) + outdoor screws/connectors. And also extra $50 in miscellaneous stuff that we somehow needed. Does not include table saw, impact driver (LIKE SCREWING THROUGH BUTTER), other tools that we already had. Srlsy, self-tapping screws and that impact driver saved us from despair. Those star bits, my god.
We're going to use ribbed metal panels with a foot overhang on the front and back and however much we can get on the sides after cutting them up. The back two feet of the coop is floored with plywood where the nest box will go and will have sand covering. They can use the platform area if they don't feel like perching or want to pile up in a chicken ball. Then I just pull open the rear door and rake whatever gross leavings they have behind to the bottom of the run. My plan is to have a higher 'main' perch towards the front walled section of the coop area that they can hop to, and their poops will drop to the ground. If that doesn't work out for whatever reason, it shouldn't be too hard to add another plywood panel.
I'm intending to make the rafters and purlins out of 2x2s to keep weight down vs. 2x4s.
My initial plan was to have it directly on the ground, but BF thinks we should keep it on concrete blocks. Still mulling over that one. Also thinking about if we should put a ceiling over the coop part directly in case rain blows a bit horizontally and bypasses the main roof.
This is hard! But kinda fun. But also stressful. And chickens are not grateful at all. Any last minute suggestions, 'nooo you built a chicken deathtrap', etc. comments?