The problem is that we rent the home we live in. Having chickens (no roosters) in the backyard is okay in the city where we live, but since we rent, the likelihood of having to move is rather high. I think I can convince our landlords to allow it, but I will need to design a coop & run that can be easily broken down and moved in small pieces. So, before I sit down to try and design one, has anyone else already worked up plans for such a thing? Size would be for less than a dozen (more like 6 to 8) hens. Has anyone already put together plans for something like that?
For a run, maybe look into large dog kennels, the ones that are 8 or 10 feet on each side.
Some of them are made of flat panels that are easy to take apart, transport, and put back together later.
Some come with roofs (basically just a tarp) and some without.
Some can be made large by just getting extra pieces, some cannot.
Some have chain link fencing, some have metal wires forming a mesh of rectangles (various sizes depending on the brand.)
Or there is this from
Tractor Supply, actually labeled for chickens:
https://www.tractorsupply.com/tsc/product/producers-pride-universal-poultry-pen-8-ft-x-8-ft-cr0808
Ignore what it says about how many chickens it holds. It's an 8x8 pen, which makes a good run for about 6 chickens (or more, if you get two and connect them). That one has a sturdy wire mesh roof that will keep out climbing or flying predators, which many dog kennels do not have.
For any of these ideas, the mesh is large enough that a raccoon could reach through and grab chickens, or small chicks could walk right out. You can put hardware cloth over the large mesh to make the holes smaller. If you attach a piece of hardware cloth to each section of a pen like that, you can still take it apart and put it together again as many times as you like, but there will be gaps at the corners (more secure than if you skip the hardware cloth, may or may not be secure enough for what you need.)
For a pen that is only used during the daytime, with a more secure coop for night-time use, I have found this kind of pen to work pretty well.