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Clackamas County, OR Solar Energy: Panel Permits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Adopted code
Oregon Solar Installation Specialty Code
Adoption citation
ORS 455.010 through 455.897
Permit issuance
Section 9.02.240
Application expiration
180 days with no permit issued
Permit voids
180 days idle or uninspected
Unpermitted install
Investigation fee required

Summary

Clackamas County regulates rooftop and ground-mount solar installations under the Oregon Solar Installation Specialty Code, adopted by County Code 9.02.040(M). Installers go through the same permit path as any other specialty-code project: plans reviewed by the Building Codes Division, fees paid before issuance, and permits void if work stalls or goes uninspected for 180 days.

These county ordinances apply to unincorporated areas of Clackamas County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

The Clackamas County Building Code consists of the following Specialty Codes as adopted by the State of Oregon, and regulations: ... M. The Oregon Solar Installation Specialty Code as adopted by ORS 455.010 through 455.897, except as modified in this Chapter, shall be enforced as part of this Chapter.

Full Breakdown

02 folds solar energy installations into its Building Code system. 897, and makes it enforceable as part of the chapter except where modified. 240 the applicant files plans and specifications with the Building Codes Division, and the building official issues the permit only once the work and plans conform to the code and the applicable fees are paid. 270 governs how long that approval lasts: an application with no permit issued within 180 days automatically expires, and once a permit is issued, it becomes void if the solar work is not started within 180 days, is suspended or abandoned for 180 days, or is not brought to inspection for a 180-day stretch.

Applicants can request a written extension, up to 90 days on a pending application or up to 180 days on an issued permit, by showing circumstances beyond their control kept the project from moving forward. 320 and are based on the value of the installation. 330 treats the unpermitted installation as a public nuisance.

Violations & Fines

Installing solar panels without a permit forces a special investigation under Section 9.02.280, adding an investigation fee to the eventual permit fee whether or not the county ultimately approves the work. Section 9.02.330 makes the unpermitted installation a public nuisance, with each day it remains uncorrected treated as a separate offense, and the County can pursue abatement, injunction, or a Compliance Hearings Officer case to force removal or correction.

Frequently Asked Questions

Does Clackamas County require a permit for solar panels?
Yes. Section 9.02.040(M) adopts the Oregon Solar Installation Specialty Code for the unincorporated county, and any solar installation covered by that code goes through the standard Section 9.02.240 permit process: plans filed with the Building Codes Division, review for code compliance, and payment of fees before the building official issues the permit.
How long does a Clackamas County solar permit stay valid?
Section 9.02.270 voids the permit if the installation is not started within 180 days of issuance, or if the work is suspended, abandoned, or goes without a passed inspection for any 180-day period afterward. A written extension of up to 180 additional days is available if the permittee shows circumstances beyond their control delayed the work.
What if I install solar panels before getting a permit?
Section 9.02.280 requires the county to conduct a special investigation before a permit can be issued for work already underway, and charges an investigation fee based on actual or average investigation cost in addition to the permit fee. Section 9.02.330 also treats the unpermitted installation as a public nuisance subject to abatement.

Sources & Official References

Other rules in Clackamas County

All Clackamas County rules

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