Hello Chicken People! What a wonderful resource this site is! Thank you all! We are embarking on the adventure of adding three hens to our family which is currently 5 humans, 1 dog, 2 cockatiels and 2 fish. We have the chicks in the garage now, living in a warm box they are nearly 4 weeks old (picture above is 1 week old) and I am trying to finish up their coop pretty soon. So let me describe the our environment and coop design and I have a few questions. We live in a suburb of northern California near San Francisco Bay in a very temperate climate; rarely freezing in winter. A permit is required to keep poultry and I intend to get one. They allow us up to 6 hens, no roosters. The backyard is ~30x60feet and mostly lawn and plants. In the past there have been raccoons in the neighborhood although I am not aware of any now, but want to design something coon proof anyway. Of course there are rats, squirrels, feral cats, crows and the occasional bird of prey. The coop I am building is 3'x4'. Bottom floor is 3' high. Total height 6' at peak, 5' at the eave. The bottom will rest on the earth with a ramp up through the floor into the coop above. Two nesting boxes and a roost or two. Keeping this thing clean is a priority, so one of the features I have is an easy opening top/side and also a removable floor. If the floor gets really nasty it could be easily replaced as well. I typically go overboard on design, so here are some of the things I'm doing based on what I've read: :|downstairs has 2 solid walls to give the hens a safe corner to run to in case a coon tries to get them. The other 2 walls will be 1/2" wire. :|The bottom will have wire fence 1x3 to prevent anything from burrowing in, but letting the hens have access to the earth :|I plan on moving this thing if they are scratching too much in one area. Maybe even a couple of wheels on it. :|I plan to build a run which would attach, maybe 4'x8' I welcome any feedback or advice. Questions: 1.How much light is needed in the coop? I could put in window(s) or I could use the transparent sun-tuf roofing. I was afraid the clear roof would roast the occupants, but I've read they need light inside. I'm confused. 2.How much ventilation is needed? I'm assuming on hot summer days they will need a breeze, so was planning on some vents, just not sure if they should let light in as well or not. Was planning on making them closable for winter. 3.The permit asks about lime washing and how frequently it is applied. What is that? Should I leave the interior bare wood or should it be painted (or lime washed?). I was not planning on painting 'cause I assumed the hens would peck at it. As an alternative I have some BEHR deck sealer which I think is silicone based. Would this be a good or bad alternative to paint or bare? 4.I've seen several coops with linoleum flooring... now I'm wondering if I should add that too? Or should I be leaning towards a wire floor like this one? 2story Coop Here a picture so far: Thanks for looking!