after reading comments here and You asking about this, i would if I was you start building a bigger coop for them outside. you need wood, just enough to make sides etc. it doesnt have to be pretty. cut a hole for a window etc. really i would not even consider 30 plus (or whatever) (thats too many) inside the house...
Your human health (and others that live with you) should be top priority. REgardless even IF you plan on eating them for din din later on.
Can you build a quick coop. yes you can.
i would NOT put that many chickens in the house period. Good luck.
p.s. buy plywood, its cheaper. nails. make a box form who cares, just please tell us you wont put that many in the basement?
these are just my opinions.... and my hubby's who i have just told (sitting next to me on the couch)
where are your other livestock living? Currently owned by 4 dogs, 3 cats, 10 hens, 1 Black Australorp Rooster named Zorro, 6 (soon to be 4) Ducks, 4 goats, 3 sheep, & 2 pigs. and I am just getting started!