Great answers from great people - I like that! Many agents can steer consumers in the right direction regarding selection of a contractor.
Colorado consumers always should check with the city to learn if a contractor is licensed. As others note, they should carry liability insurance as well as worker's compensation.
I've known a general contractor here in Longmont for many years who should get a phone call if anyone wants to build a custom home or remodel. The guild is a good place to start, too.
Thanks all who added their thoughts and recommendations.