Building permits in Oklahoma
2 jurisdictions, each with the department that issues, its portal and its phone number. Cities issue their own permits; counties cover unincorporated areas, which is the distinction that sends most contractors to the wrong office.
2 checked against the department's own page
Licensing
No statewide general-contractor license; electrical, plumbing, mechanical & roofing are state-licensed (Construction Industries Board). Cities require local permits/registration.
Oklahoma Construction Industries Board (CIB)