If you have kids, chances are you have a tree house in the backyard for them to play with. But if you have a dog, where is his safe area in the yard? If you don't have a dog house yet, why not make one cohesive look in your back yard by having matching tree and dog houses.
This is a great family project that the kids will enjoy being involved in and can make for a great family weekend together.
Start by taking into account what you already have in place in the yard for your children. What colors and style are at play in the dog house? If it's a complicated design (say a pirate ship or a castle) you may not be able to make dog houses that look the same. Instead, you will need to come up with a complementary design that matches the tree house but still works in the construction of a dog house. If you have a little artistic talent, you may want to draw a few sketches first to make sure you like the plan.