The contractor I plan to use is out of Montana, and they have been building log homes for something like 27 years. I toured a couple of their spec homes and they look pretty good.
Check their record in the courts and with local and state regulatory authorities, using both individual and corporate names, including any prior corporate names and d/b/a names. Get some help from someone who knows or be ready to ask lots of questions of clerks to make sure you have run everything down of consequence. That may take a day or two or more of effort, but considering the cost and nature of a home, it seems worthwhile.