Do I need a plumbing permit in Oregon?

In Oregon it depends on the size of the job. Permits are issued locally, so the answer comes from your Oregon city or county rather than a single statewide rule. Of the 2 Oregon jurisdictions we have verified for plumbing work, 1 requires a permit outright, 1 depends on the size or scope of the job, and 0 require none.

Is there a plumbing permit exemption in Oregon?

1 of the 2 Oregon jurisdictions we cover sets a threshold rather than a flat rule, so the same job can be exempt in one Oregon county and permitted in the next. The table above lists each Oregon jurisdiction's published threshold in its own words, with the source and the date we verified it.

Oregon

Do you need a plumbing permit in Oregon?

By Mario Bailey Last checked 16 Aug 2026

Always required: 1; of 2 jurisdictions
Conditional: 1; depends on size or scope
Not required: 0; exempt outright

Plumbing Permit rules nationwide, beyond Oregon.

A plumber tightens a fitting on water supply pipes

Requirements and size thresholds for plumbing permits vary by locality. The table below compares what each Oregon county or city requires. Always confirm with the local office before starting.

Comparing states? See plumbing permit rules across every locality we cover.

The application steps and inspection sequence for plumbing permits come from the model code rather than from Oregon law, so they read the same wherever you build. We keep that walkthrough in one place: how a plumbing permit application and its inspections work, start to finish. What changes between Oregon jurisdictions is below: who requires a permit, what they charge, and which office you file with.

Swipe sideways to see thresholds and confidence.

Locality	Permit required?	Typical threshold	Confidence
Eugene	Yes	Any size	Confirmed on official page
Portland	Conditional	Before repairing, replacing, or moving plumbing pipes, adding new piping, capping pipes...	Confirmed on official page
No localities match your filter.

Common questions about plumbing permits in Oregon

Do I need a plumbing permit in Oregon?: In Oregon it depends on the size of the job. Permits are issued locally, so the answer comes from your Oregon city or county rather than a single statewide rule. Of the 2 Oregon jurisdictions we have verified for plumbing work, 1 requires a permit outright, 1 depends on the size or scope of the job, and 0 require none.
Is there a plumbing permit exemption in Oregon?: 1 of the 2 Oregon jurisdictions we cover sets a threshold rather than a flat rule, so the same job can be exempt in one Oregon county and permitted in the next. The table above lists each Oregon jurisdiction's published threshold in its own words, with the source and the date we verified it.

Do you need a plumbing permit in Oregon?

Common questions about plumbing permits in Oregon

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