appraiser Key Questions to Ask Before Letting an Appraiser in the Door By John Maynard & Richard Hagar • Nov 5, 2013 A McLin / flickr Listen Listening... / 3:21 Street Cents Q&A about questions to ask before letting an appraiser in the door. Should you vet a residential appraiser before letting him in the door? That's the question KPLU's John Maynard had. "Ask questions!" says Richard Hagar, a Seattle-area real estate appraiser and educator.