Pre-qualified Buyers

Those buyers are wise to find out ahead of time how much mortgage they might qualify for. It'll be even better if they get pre-approved, with a lender promising to give them a mortgage loan. In either case, what they're doing doesn't involve your specific house at this point. But when and if they make an offer, you'll have some assurance that they're financially able to afford the property, which will take some of the uncertainty out of the negotiations and really is a plus from your point of view.