Some things I’ll admit. One is that I don’t have the equipment or the skill to take down a partially burned out 1300 sq ft house. Last week I called to get an estimate on tear-down. Tonight that contractor called back, extremely chatty and difficult to understand, and talked about all sorts of unprofessional things for 1/2 hour. He’s lost his opportunity.
Even when building a non-standard house, anyone who is hired to help should be licensed and insured. This protects both you and them. They should have references. They shouldn’t demand payment before the work is due. (Partial to pay for supplies is one thing. Payment in full is quite another.) They should present you with a contract which you both sign that states the terms of your agreement, and what happens if they fail to complete or make an error that causes loss or damage to your property. If they are paid to assist or to do the work, they should also be professional in their contacts and should respect your time, your desire for a second opinion, and your vision. It will be your house, after all, not theirs.