Dear Friends: We are considering converting the backyard playhouse (we call it the "barn") into a chicken coop. This is a fairly large structure (64" x 104" interior) and sturdy. I am thinking of converting 36" of it into the coop (36 x 64 = 16 square feet) and adding the run on the back of 36x110 = 27.5 square feet. I am posting pictures of several views of the barn. I was planning to build across the barn with hardware cloth and a door on the interior, cut a hole to the run on the back, and a hole to nest boxes on the front. I thought I would also build a six foot high run enclosed by hardware cloth with another door off the back of the barn so I can easily get inside the run. San Francisco is surprisingly full of dangerous predators. Hawks, raccoons and skunks are just the start with coyotes living in nearby Golden Gate Park. I have two 8 yr olds and they will NOT be happy if any of our birds fall prey. So this sucker needs to be seriously safe. I have been reading here on the forums for several weeks and have some thoughts about how to do that, but with questions below. One final note is that I would appreciate all suggestions for how to save time in keeping chickens. I am willing to spend a little more money to save time. Having said all that, here are my questions: Looking at the floor of this structure, do you think it is sufficient to keep out predators or does more need to be done? I was planning to put a nest box on the exterior right beneath the window. Does that make sense? For the roost what is the best strategy for ease and speed of cleaning? Do I need both food and water both inside and outside? San Francisco limit is 4 chickens. Can I fit 4 chickens comfortably in this space, especially with a somewhat smaller run? Is 2 nest boxes sufficient for 4 chickens? When building the run, will it be sufficient to sink hardware cloth around the outside of the run? How deep will I need to sink it? Or should I do something else to make the run safe? Thanks everyone for helping this newbie, I really appreciate it!