Coop size?

[dr8goons]

What size coop would you recomend for 25 to 30 chcikens? I have 12 itty bittys now and 7 to hatch mon. right now we have a 14x18 run and were going to be adding a 14x 30 run to it with in the next week. Now im just lost on coop size for them

 

[s6bee]

For standard chickens they suggest 4 sq.ft per bird inside and roughly half that for Bantams. I would stick to the larger square footage if they will spend a good amount of time in the coop for bad weather. Otherwise they can beat up on each other and it will get bloody.