Hey, Bob...I would refer you to your local "Builder's Association". Most of the cats there are "vetted" by marketplace...meaning, people talk. So, builders who have a decent reputation tend to be part of their local association. Not a hard and fast rule, but a starting place. Once you speak to the BA, check Angie's List, the "real reviews" and then ask your prospects for the contact information of their last 3 clients. IF you get tons of push-back then, run, Forrest, run.