Typically, 30 years is an average amount of time to pay off a mortgage. But what if you don’t want to be “normal”? What if you want to own your house free and clear in half the time? You can, using these techniques for how to pay off a 30-year mortgage in 15 years. First, you need to learn about the subject so you can succeed. You’ll learn about everything from extra payments to terms you should know about mortgages.