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Multiple mortgage pre-approvals and effects on credit score
The problem is not the credit score; it is the "competing" inquiries. Multiple inquiries will be considered as one if done withing a short time period (2 month, IIRC) and for the same kind of credit, because people do shop for rates, you're not the first one to do that. So don't worry about that. What you should be worrying about is banks asking questions about these inquiries, which is an annoying (at least for me) technicality. You'll have to explain to each of the banks that you want a pre-approval from that you're going to take the mortgage from them, and not from anyone else. In writing, with your signature notarized. Which is OK because it's done (the signature and notarizing) at closing, but you'll have to "convince" them that they're the chosen ones to get approved. Other than that it's pretty simple. I've done that (including the declaration that I'm not going to take any loans based on the other "competing" inquiries), and it worked fine when I took the original mortgage, and when I refinanced it later in a similar "shopping" fashion. Do it closer to the actual bidding, because closing does take at least 3-4 weeks, and the rate lock is usually for 30-60 days, so not much time to shop if you take that road.