Too big now could be too small later!

Possibly one of the most important factors that will need to be looked at is the size of chicken coop you want to build.  There are small, medium, and large plans for hen houses and  chicken coops, and each accommodates a specific number of chickens. The biggest mistake you can make is adding too many chickens into your coop.  Because each chicken requires a certain size area to feel comfortable and lay eggs properly, you’ll really want to make sure you are considering your coop size wisely. It is always better to error by planning too big than being too small, plus then you can always add more hens to the coop if you want later on.