Pre-approval Package prior to LOI?

[Jonathan Pluviose]

How do I go about getting a pre-approval? I don’t have a property under contract yet, but the idea I had is to present a minimum performance scenario. Basically agreeing with a lender that, if I find a property that produces certain numbers or better, then they’ll fund the deal post a formal inspections. My goal is to shorten my financing contingency, & be a more attractive first time buyer. Thanks J