If you haven’t already gone through the mortgage pre-qualification process, you will need to meet with a lender or mortgage broker. They will establish how much of a mortgage you will qualify for. Mortgage rates vary considerably and it is paramount that you shop around for the best rate, terms and options. The pre-qualification process can be completed fairly quickly, based on less information than is required for getting pre-approved. While it is fast and it does help, a pre-qualification letter is an opinion from a lender of the maximum amount of real estate you can qualify for. In a competitive seller’s market, an offer from a buyer with a pre-qualification letter could lose out to a person who is pre-approved.