Here are a few steps you should take before you begin your home addition project.
1. The first thing you should do is determine what you need and exactly how the space is going to be used.
2. Think about how your addition will look when it's finished. Will it blend in with your existing house and your neighborhood? You don't want to make it so big that it becomes too big for your lot. Additionally, you don't want it to be overbuilt for your existing neighborhood. Otherwise, you will lose the return on your investment.
Check out the rest of the steps here...