Oregon
For Oregon, disclosure required is Yes; sellers of real property of up to four dwelling units must provide a seller's property disclosure statement including disclosure of any testing or treatment for radon gas; testing mandated is Yes; school districts must develop a plan for radon testing in any frequently occupied room in contact with the ground, with retesting at least once every 10 years; professional certification required is No state-specific licensing requirement for radon professionals; action level pci l is No state-specific action level; follows EPA recommended 4 pCi/L; school testing required is Yes; school districts must develop a radon testing plan for frequently occupied rooms and retest at least once every 10 years. Schools must adopt a Healthy and Safe Schools Plan addressing radon, recorded from its source on 2026-08-15.
- jurisdiction
- Oregon
- disclosure required
- Yes; sellers of real property of up to four dwelling units must provide a seller's property disclosure statement including disclosure of any testing or treatment for radon gas. verified
- testing mandated
- Yes; school districts must develop a plan for radon testing in any frequently occupied room in contact with the ground, with retesting at least once every 10 years.
- professional certification required
- No state-specific licensing requirement for radon professionals
- action level pci l
- No state-specific action level; follows EPA recommended 4 pCi/L
- school testing required
- Yes; school districts must develop a radon testing plan for frequently occupied rooms and retest at least once every 10 years. Schools must adopt a Healthy and Safe Schools Plan addressing radon.
- statute citation
- Oregon Revised Statutes §§ 105.462--.490, 332.341, .345, 332.331, .334, .337, 455.365
What the source says
Amends existing disclosure law to require sellers of real property consisting of up to four dwelling units to provide buyers with a seller's property disclosure statement, which includes disclosure of any testing of or treatment for formaldehyde, radon gas, mold, lead-based paint, or asbestos on the property.
— eli.org, retrieved 2026-08-15
Source
- eli.orghttps://www.eli.org/sites/default/files/files-pdf/2025%20Radon.pdf