What a cute idea! I am a "newbie" to raising chickens as an adult, Silkies to be exact, but I have read a lot about raising chickens and grew up with them on our lil farm. From what I have learned, you need areas large enough to house certain numbers of chickens! I think having 8-10 chickens in the playhouse would be okay, but like I said, it's a guess! You don't want too many fighting for space! You would need to add appropriate wire or chicken wire to the open areas to protect your chickens from predictors! You should and places the can roost like broom handle sized poles across a couple places for them to sit and of course a couple nesting boxes for them to lay their eggs! You want a way to easily collect their eggs. This means that wherever you put your nesting boxes there should be access to the outside where you can just reach in and collect the eggs without going into the coop! I hope this makes sense and helps you a little! I bought a "mini" barn for my 2 Silkies, but I don't keep them confined to such a small area. They stay in when it's too cold but the rest of the time they are free to roam the yard. In the first photo below, the roof wasn't quite finished but to the right you can see the nesting box that I access from the outside. 2-3 chickens will often share one nesting box! Make sure you gather eggs everyday if you are eating them!