The contractor mostly works in constructions and his job is to supply materials or to perform services in exchange of money. Be cautious about the contractors you hire.
There are a lot of ways to find you the best contractor.
Find companies that offer remodeling services in your area and hire a prescreened contractor from them. To make sure you get the right contractor is by asking your friends and relatives about the contractors they worked with and if they were satisfied with his work it means you can hire him too. Other locations to hire a contractor from are the local builders association and others.
If you have references from a contractor use them and visit his previous clients. Ask them about the services he performed and if they were satisfied with the results. You should ask about jobs that are the same with what you want from the contractor. If they say they would hire him again, than you should hire that contractor.
Take advantage of these tips when searching for a contractor. Try to pick around three contractors and then compare them to see with whom you feel the best communication. Then make your final choice.