Based on the phone interviews, pick three or four contractors to meet for estimates and further discussion. A contractor should be able to answer your questions satisfactorily and in a manner that puts you at ease. Tom says that it's crucial that you two communicate well because this person will be in your home for hours at a time. On the other hand, don't let personality fool you. Check in with your state's consumer protection agency and your local Better Business Bureau to make sure contractors don't have a history of disputes with clients or subcontractors.