Always do your home work. That is most important when selecting a contractor.

• Make sure they are insured. Always get there insurance information from the insurance company. This is more official coming from the insurance company.
• Ask Questions. Never be afraid to ask what is on your mind, you might ask the one question that runs them off or the one question that makes them your contractor.
• Ask for References and pictures from previous jobs. And if they are a good contractor as I always ask please leave feed back for the next client so they can see if you were satisfied or not.