Your contract should include: detailed time frames, the total cost, payment arrangements, your contractor’s license number, project description, names of parties involved and how to handle additional costs if necessary. Be cautious; if you are not given a timeline for the job to be completed, this may indicate the contractor has several current jobs and may not complete your job in a timely manner. Keep track of all-important information as well by keeping job-related documents such as contracts, payments and receipts in one place.  Record key contact information for everyone working on your project.