Oregon Revised Statutes Chapter 308 § 308.232 — and 308.235 utilizing the market data approach (sales of comparable properties),

and 308.235 utilizing the market data approach (sales of comparable properties), the cost approach (reproduction or replacement cost of the plant) or the income approach (capitalization of income) or by two or more approaches. The assessed value of an industrial plant shall be determined under ORS 308.146. (2) The owner of a plant may elect to have the plant appraised and valued for ad valorem property tax purposes excluding the income approach to valuation. An owner making an election under this subsection must further determine which of the following paragraphs is applicable to the election: (a) If this paragraph applies to the election, the owner may not be required to provide any itemization of income or expense of the industrial plant for use in making an appraisal of the plant for ad valorem property tax purposes; or (b) If this paragraph applies to the election, the owner may not be required to provide any itemization of income of the industrial plant for use in making an appraisal of the plant for ad valorem property tax purposes, but may be required to provide an itemization of operating expenses of the industrial plant for use in measuring functional obsolescence in a market data approach or cost approach to valuation. (3) Not less than 30 days prior to the making of a physical appraisal or reappraisal of an industrial plant by the Department of Revenue or by a county assessor, the department or assessor shall notify the owner of the plant by mail, return receipt requested, of the intention to physically appraise the plant. The notice shall inform the owner of the date the appraisal is to commence. In commencing the appraisal and to aid the owner in making an election under subsection (2) of this section, the department’s or assessor’s appraisers first shall make a preliminary survey of the plant as to the methods and approaches to the valuation of the plant to be used in the appraisal. The owner or owner’s representative shall immediately thereafter meet with the appraisers, and within two days after the meeting may give written notice to the appraisers that the owner elects to have the plant valued in accordance with subsection (2) of this section. The written notice shall state which paragraph of subsection (2) of this section is applicable to the election. Failure to make the election precludes the owner from making the election for the tax year in which the valuation determined by the physical appraisal is first used on the assessment and tax rolls of the county. (4) If an owner does not make an election under subsection (2) of this section, the owner shall make available to the assessor or department all information requested by the assessor or department needed to determine the real market value for the plant. At the request of the owner, the information shall be made the confidential records of the office of the assessor or of the department, subject to the provisions of ORS 305.420 and 305.430. (5) If an owner makes an election under subsection (2) of this section, the owner may not in any proceedings involving the assessment of the industrial plant for the tax year for which the election was made, before the county property value appeals board or the Oregon Tax Court, be entitled to introduce evidence relating to the use of the income approach to valuation of the plant or introduce any information protected under the election. (6)(a) On or before December 31 of the tax year in which the election under subsection (2) of this section first applies to an assessment and tax roll, or on or before December 31 of any subsequent tax year, if the owner is dissatisfied with the election under subsection (2) of this section, the owner may revoke or revise the election. (b) If the election is revoked, the owner may request the Department of Revenue or the county assessor, whichever is applicable, to revalue the plant for the next tax year using the appraisal methods set forth in subsection (1) of this section. (c) If the election is revised, the paragraph of subsection (2) of this section that was not applicable to the election shall become applicable to the election in lieu of the paragraph applicable before revision. If the election is revised, the owner may request the Department of Revenue or the county assessor, whichever is applicable, to revalue the plant for the next tax year in accordance with the revised election. (d) If a revocation or revision of an election is sought, the owner shall demonstrate that the determination of real market value requires taking into consideration the utilization of the income approach to valuation or the measurement of functional obsolescence using operating expense information. Thereafter, at the request of the department or the assessor, the owner shall make available to the department or the assessor all information requested by the department or the assessor as provided in subsection (4) of