Doc E you have a nice looking setup for Casey. Since it does get cold here in SD also I have a 4 by 16 ft run for each of my dogs and on the outside of the run I have a house that is 4 by 3 ft and 30 in high. They have an entry that gives them protection from cold winter winds. Tey have a triple floor with air space between each floor and a double wall and roof with insulation. When it gets down to about 20degrees I stuff the sleeping quarters with fresh hay and let them burrow in. The Chessie usually sleeps out on the concrete in front of his house unless it is fly or mosquito season or it gets down to about 10 degees. The Lab will sleep in side the dog house almost all weather. The cement makes it easy to clean up if one of them can't hold on till I let them out in the morning. I scoop and then wash it out.