Almost always the answer will be YES. The amount of electrical work to be done in the State of Oregon without a permit is extremely limited. Don't be fooled by people compromising your home or company's value and safety by doing unlicensed or unpermitted work. Most emergency repairs we do are correcting unpermitted amateur wiring.
Who is responsible for obtaining permits? The property owner or contractor is responsible for obtaining structural, mechanical, electrical, plumbing, and manufactured dwelling setup permits. For electrical work, Oregon law requires that if an electrical contractor performs the work, the contractor is responsible for obtaining the permit. Electrical permits are nontransferable.