pre approval prior to showing?

[Tami R.]

I have about 75 doors about 85% SF. looking at making a purchase of 95 more doors with 90% being multi units. I was curious on how everyone does the viewing process of a vacant property? do you make potential tenant fill out an application prior or show house first. I have always shown house first but I would say majority of the time if I would have seen their app I would have known if it was a waste of time or not.... i.e. someone making $1k a month, I am not letting rent a $600 house. what is your process?