Upon its consideration of any complaint or other information available, the county board of equalization may make such changes, by way of increase or decrease in assessments, appraised values, or changes in classifications or subclassifications, as in its judgment are proper, just and equitable; provided, that the property owner or owners shall be duly notified by the board of any increase of assessment or change in classification and given an opportunity to be heard.
(1) Such notice shall be given at least five (5) days before the adjournment of the board, and such notice shall include the tax year for which any increase of assessment or change in classification is made.
(2) Notice by United States mail to the last known address shall be deemed sufficient within the meaning of this section.