This step by step diy article is aboutoutdoor cat house plans. Building a wooden house for you cat is a great idea, as it will protect it from bad weather. In addition, if you know the basic woodworking techniques and buy quality materials, you can get the job done in just a few hours. From our experience, we recommend you to build the frame of the cat house out of 2×2 lumber, as you could add rigid insulation boards.