Plastic dog houses are not suitable protection for your dog.

Court House - Plastic dog houses are not suitable protection for your dog. They are too hot in the summer and too cold in the winter. If your dog spends time outside in the yard, provide a thermal igloo or a waterproof, wooden doghouse raised off the ground, facing south, filled with straw and having an off-side door with a flap. Bring your dog inside when you are.