One of the first things you have to do when buying a home is take an in-depth look at your financial situation. Since most people buying a home have to apply for a mortgage, it is imperative that you know what lenders will be seeing when they investigate your creditworthiness. Getting your credit report and knowing your score will be one of the first steps you want to take. But you might be wondering how much it really matters. The truth is it matters a lot. Here's why.