Shop around: For major repairs, take time to get multiple estimates based on the same specifications and materials. Ask for references, and verify that the contractor is licensed and insured. Legitimate contractors should have liability insurance and workers compensation. Without insurance, if a worker is injured on the job, the homeowner may be liable.
Get everything in writing: Require a written contract with anyone you hire. Be sure their name, address, phone number and license number are included. Read and understand the contract in its entirety, and never sign a blank contract. Make sure the contract includes a detailed list of labor, materials and services to be completed.
For more information, go to bbb.org.