Thank you all for the comments. I will tell the builder of my coop(my brother-in-law) that we need to do some resizing. We were thinking about doing the enclosed part 5 by 4, and open-bottom 10 by 4(will that be big enough?). It breaks my heart that they cant run around free but that's what happens when you go from being a co-owner at a 10 acre farm in Florida to a city house in California! I do not want any pecking, I've seen those cases before, so thankyou again for the resizing help!
Why not draw up your plans and show them with an explanation and don't forget the 10 chickens part as I am sure most people wont go back and look to see what the population in the is going to be .....
Most of the regulars on here are going to be honest and fair about space requirements to put the coop & run the material cost and so on or and the labor of course ....