Lender pre-approval for small multi-family

[Peter Barrow Jr]

Hello. I've heard that getting a pre-approval before shopping for a small multi-family will is the recommended way to let the agent know you're serious and preferred if dealing with a BRRR. However, how do I get a pre-approval for one property when I will be looking at many properties? Wod I be able to use the same pre-approval as a basis for any property I'm looking at that has similar criteria? Can't wait to hear from someone on this. Thank you.