(2) The assessor shall correct the maximum assessed value of the property for the current tax year if, in the petition filed under this section, the petitioner demonstrates:
(a) A difference between the actual square footage of the property as of the assessment date for the current tax year and the square footage of the property as shown in the records of the assessor for the tax year.
(b) That new property, or new improvements to property, added to the tax roll in a prior tax year did not exist as of the assessment date for that prior tax year or any subsequent tax year.
(3)(a) A correction made under subsection (2)(a) of this section must be proportional to the change in the real market value for the current tax year that is due to the correction of the square footage of the property.
(b) A correction made under subsection (2)(b) of this section:
(A) Must reflect, in a manner determined by the assessor, the removal of the new property or new improvements to property from the assessment and tax rolls as accepted by the assessor.
(B) May not be made to the extent that the assessor finds that the new property or new improvements to property existed on the assessment date of a prior tax year and the petition is best construed as demonstrating a difference in the nature, extent or value of the new property or new improvements to property.
(4) Notwithstanding subsection (3) of this section, a correction made under this section may not cause the maximum assessed value of the property to increase by more than three percent from the maximum assessed value of the property for the preceding tax year.
(5) A petition filed under this section must be on the form and contain the information prescribed by the Department of Revenue and must be filed with the county assessor on or before December 31 of the current tax year.
(6) A decision by the assessor pursuant to a petition filed under this section may be appealed under ORS 305.275. [2001 c.764 §2; 2007 c.516 §3; 2009 c.443 §4; 2015 c.39 §1; 2015 c.97 §1a]