How do I perform a credit check on a person, with their permission, of course?

Have someone I might seriously consider renting the house to. She passed all my questions with flying colors. I asked if she’d consent to a credit check and she said, “Sure. It’s only smart to be cautious when working with people you don’t know.”

I’ve been in businesses where we ran credit checks, but they were tied in with a specific companies who did that. As an individual how would I do that?