This is our kennel setup. This is the rear view followed by the side
view. All dogs are on concrete with roofs over the kennels. We use
55 gallon plastic drums for houses due to their durability. We also
incorporate a metal panel between the first two to prevent Romeo
from urinating on Bella.
This is our puppy nursery. It's an insulated 10' x 12' with two
whelping kennels on either side. It has lights, a/c in the summer
and  heat in the winter (neither pictured). We use kiddie
swimming pools as whelping boxes and they are fantastic!
However, all pups are born inside under constant supervision.