It is important to make sure that you are working with a licensed and insured contractor. The best way to see if they are licensed is by checking their credentials at the city, county, and state levels. Make sure they are registered as well. You can also find out if your contractor is insured by asking them for proof of insurance or checking online. If you find out after hiring a contractor that they are not licensed or insured, you may have to pay for any damages caused by them in court later on down the line.