Plumbing,Electrical and Mechanical Contractors are licensed by the Oklahoma State Department of Health. Testing requirements are as follows, proof of at least 4 years work experience in the trade you are applying for. Once approved a written test is taken. Call the State Dept. Of Health for details. State Dept. Of Health

Oklahoma Department of Health Construction Industries Board 1000 Northeast 10th Street, Room 1205 Oklahoma City, Oklahoma 73117 (405) 271-5217; Fax (405) 271-5254

Architects: Board of Governors of Licensed Architects and Landscape Architects of Oklahoma Landmark Towers 3555 Northwest 58th Street, Suite 640 Oklahoma City, Ok 73112 Post Office Box 53430 Oklahoma City, Oklahoma 73152 (405) 949-2383 Fax (405) 949-1690