Benton County, OR Building Safety: Building Permits (2026)

Benton County Code § 11.000 sets the Building Code's reach: it applies in all areas of the county except where an incorporated city has elected, under ORS 455.020, to administer the specialty codes itself, so Corvallis, Philomath, Adair Village and Monroe run their own permit desks while the county code governs unincorporated land. To get a permit, § 11.105 requires the applicant to file plans, specifications, computations and other data for the building official's review; once the official finds the submission conforms to the code and other applicable laws and the fees are paid, the permit issues, with the approved plans stamped and kept on the job site (§ 11.110).

The official can issue a partial permit for part of a project before the whole set of plans is approved (§ 11.105(3)). Permits are not open-ended. Under § 11.125, a permit becomes null and void if work doesn't commence within 180 days of issuance, or if work is suspended or abandoned for 180 days after starting, and every permit expires outright six months after issuance regardless, unless the county approved a longer completion period for a large or complex project. An expired permit can be reinstated within one year if the code hasn't changed and the plans haven't, at half the original permit fee.

Section 11.130 addresses work that starts without a permit: it triggers a mandatory special investigation, and an investigation fee is added on top of the permit fee whether or not a permit is ultimately issued. Permits are not transferable between persons or firms (§ 11.135), and the building official can suspend or revoke one issued in error or where work violates any county ordinance (§ 11.140).