Finally I got some pictures taken and uploaded!!
I just wanted to share our setup, a version of the Rakenhouse.
Dimensions are 7 1/2' x 20', which are perfect for the 14 chickens. We just have our trio of rabbits so far, but once they have litters we'll install 2 grow out cages.
I'm also interested in colony raising the rabbits, and am thinking of putting a divider in the front half of the hoophouse for the rabbits, the back half would stay for the chickens. That would give us 7 1/2'x 10' for each. Wondering if that would be sufficient space?
The nice thing about this style of building is that it was so easy to build, and fairly reasonable in cost, I think. For the frame it's just cattle paneling bent from end to end (as many as you want to make the length you want) and attached to the base frame. NExt year, we'll upgrade the tarps (there are 2 heavy duty ones now, but summer got too hot in there) to an insulated tarp. For ventilation, both ends are chicken wire, but we can add tarps when it gets colder.