There are lots of great options when it comes to dog house material, so it really comes down to the style you like best. Common materials include wood, plastic, resin, and hardwood. Wood is the most popular since it's a good insulator and can withstand high temperatures and humidity. Take the weather conditions of where you live into account when deciding what you want your dog house built out of. Tip: drill several holes the size of nickels into the side of the house's walls to allow warm air to escape in the summer and dry the interior in the winter.