Getting pre-qualified for a mortgage is the first step in the home buying process. The lender will evaluate your income, debts, down payment, and credit history to determine the amount they are willing to lend. 

This pre-approval will include an interest rate (usually for 3 months)

and will provide you with a clear understanding of your budget and the price range of homes you should target in your search. Pre-qualifying also eliminates uncertainty and risk in financing once you find your desired home.