Oregon Administrative Rules (OAR) 918-309-0025 covers phased permitting. These rules are located here: Oregon Administrative Rules

Issuing permits in phases is common when a large construction project has a tight deadline. The entire set of plans for a large project will take a long time to go from the hands of the architect to the jobsite. The plans will have to go through many engineers and design professionals as well as the plans review process at the city where the project will take place.

Often, in order to get the trades moving, a foundation plan will be applied for even if the remainder of the plans are still under review. If the phased permit is obtained, the job can get started. By the time walls are about to go up, another permit will be ready to be issued for the next phase of construction.

918-309-0025 Phased Permitting

(1) During the plan review process, an electrical contractor may request a complete or partial permit before the entire plans and specifications are submitted or approved, if adequate information is provided showing compliance with pertinent portions of the code. The permittee proceeds at his or her own risk, without assurance that the permit for the entire installation will be granted, or that corrections will not be required, including those portions permitted. The partial permit shall allow the electrical contractor to proceed with work pertaining to the electrical system of the structure.

(2) Any inspections performed by the local jurisdiction on the site or of the ground work shall be counted toward the number of electrical inspections allowed by the full permit once plan review is complete and the permit is issued.