We’ve decided to start naming our coop models, using Austin neighborhood names. Our first one will be called the “Brentwood” and the second the “Crestview” (we live right on the border of the two). Here is our second model, sitting outside drying (with the roof off):

As you can see, it uses the same format as the other coop. This is by design, as it allows us to use interchangable components. A door on the Crestview will work on the Brentwood. All of the doors and fixed panels use the same basic design: 45 degree miter joints with biscuits. There is very little work done “in place” — it’s all made up of components. This makes it easier to mass produce, and opens the possibility of pre-fab kits.
In the above photo you can see that one lower panel has a wooden insert. Here is a closeup:

I routed a slot into the frame, in which a 5 mm plywood sheet runs. This was our first version of this “run access” door. This side of the coop will be where the chicken run will be attached. During the day, you slide this door open so that the chickens can roam a bit. At night, you close it up. It works okay, but I’m not entirely happy with it. “Not entirely happy with it” is a Ron euphemism for “I think it’s too complicated and need to build a better one”.
Here is a front view of the coop, with the roof in place:

Here you are seeing how the doors work on our coops — this is the “special sauce” I kept alluding to. None of our doors use hinges. Everything is a sliding door. This gives you full-width access, if you need it. It also makes it harder for critters to open (there will be a locking mechanism, not visible here). Plus, you can remove the doors to reduce weight while moving/installing the unit.
To give you an idea of how important this concept is to our coops, look at the bigger Brentwood model:

The Brentwood premium model has eight access doors. Both upper and lower doors on the ends open. Two upper side panels open, along with the two smaller storage doors above them. There is nowhere in this coop you can’t get to. Have a sick bird? Just slide away the nearest panel to get to it. No need to crawl in.
Since the solid and screen panels are interchangable, you can swap out panels depending on conditions. Cooler weather on the way? Just replace the screens with solids. Having problems with the late day sun in summer? No problem. Put the solid doors to the West. Want full ventilation? Put in all screens.
The coop has one fixed solid wall, on the lower end of the roof slope. That’s the side that should face the South during the summer — the wall creates shade, and the pitch of the roof reflects off that 3 PM Texas sun.
Finally, here’s a shot of the nesting boxes:

If you check out some other coop designs, you’ll notice that many have built-in nesting boxes, with a small egg access door. That’s a fine idea, but wasn’t the route we wanted to take. Why? Because we learned an important lesson from Evelyn’s mom in Puerto Rico: Hens will lay eggs in just about anything they can get their bodies into. Her mom uses a variety of containers, simply wired to the sides of her chainlink open-air coop. No fancy egg access doors. No fancy ramps (chickens can fly, after all). Dead simple.
So, we went with the idea of creating individual nesting boxes, made out of 1 x 12 pine. The boxes are about a foot square with an open top and a ledge to keep the bedding in (most visible in the upper right box in the photo). Got more chickens? Just buy another box or two (hens share boxes–one box will handle 2-3 hens). Want to put new bedding in the box? Just take it out, dump it into the garbage can, and re-bed. No digging around with a dustpan and a wire brush.
This movable nesting boxes are an important part of our bigger Brentwood model, since we designed that to have movable roosts and nesting areas. You aren’t stuck with having the nesting boxes always at one end. You can swap them. We did this so that people could more easily orient their coop to their land and to the local weather conditions.
But wait, there’s more!
Once we have the two models set up in the backyard again, you’ll see another benefit of our Sustainable Urban Module design. Stay tuned.