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.
All very good points, and very worthwhile. I plan also to check with some of my Montana bankers to see if they've run into collateral financial damage from dealings with the company.