The better your credit score, the better the mortgage interest rate for which you should qualify. That can mean thousands of dollars saved over the life of the mortgage. If your credit score needs improving, get started prior to your search for a new home.
Your credit report influences whether or not you'll qualify for a mortgage and what kind of interest you'll pay on that loan. This isn't something you can safely ignore. Smart homebuyers understand the importance of monitoring credit scores and credit reports. Here is some information about how to get your credit report.