Before signing a contract, make sure the electrical, mechanical (heating and air, etc.), or plumbing contractor is properly licensed by the Oklahoma Construction Industries Board.
Oklahoma laws do not require a general contractor doing work in the state to have a state license in Oklahoma.
Obtain names, addresses, phone numbers, and license or registration numbers. You can verify your contractors license or registration at :
https://cib.ok.gov/are-they-licensed or call the Oklahoma Construction Industries Board at 405-521-6550.