Oregon Revised Statutes Revenue and Taxation § 308A.733

(1) Where any property has been granted special assessment for the purposes of property taxation under any of the special assessment laws listed in subsection (2) of this section, and the owner or other qualified person applies for a change in the classification under another special assessment law, the applicant shall have 30 days thereafter within which to withdraw the application, by giving written notice to the public official or agency to whom the applicant applied for the change in classification. If no notice of withdrawal is given by the applicant, the application shall be acted upon and the change in classification made, as otherwise provided by law.

(2) This section applies to the following special assessment laws: