OK I will see if I can figure out how to post this. I don't have any chickens ,,yet! Just received 150' of 6' chicken netting for my future run, I am working on building supports. Have to convert a small structure to a chicken coop and then I am ready to get some chickens!
Good luck on your coop building project. What kind of chickens are you planning on?
We are happy you’re here! 
"They" say you need 4 SF per bird in the coop and 10 SF per bird in the run, and I say my chickens would be at each other's throats if I only gave them that much space.
So build bigger than you think you will ever use!! And just make it predator proof from the get-go. You'll be happy you did. Or you can do it the way some of us have, and learn the hard way.
Best of luck to you!!!