If you want to learn more about how to build a large dog house you have to take a close look over the free plans in the article. The actual dog house is 4 ft x 4 ft, while the porch area is 4 ft x 4 ft. This pet shelter is built on 2x4 wall framing and it features a roof made with shingles. The exterior wall panels are made of 1/2" plywood.