The property tax administrator is required by law, after consultation with the advisory committee to the property tax administrator and subject to the approval of the state board of equalization, to prepare and publish manuals, appraisal procedures, instructions, and guidelines (property tax materials) concerning the administration of property tax. Beginning January 1, 2023, section 1 of the act requires the administrator to conduct a public hearing on a proposed change to the property tax materials before submitting the proposed change to the advisory committee to the property tax administrator. The administrator must publish notice of the hearing and mail notice to those people who so request. At the hearing, interested persons may submit information and the administrator is required to consider any submissions. Any interested person may also file a written petition to the administrator for the issuance, amendment, or repeal of any property tax materials. Currently, a taxpayer who wishes to protest the valuation of their taxable real property must file a notice of their objection and protest with the assessor by June 1. Sections 3 and 4 extend this deadline to June 8. Section 4 also requires an assessor who discovers any error that impacts the valuation of a class or subclass of property to recommend to the county board of equalization an adjustment to the class or subclass of property to correct the error. Section 5 requires the state board of assessment appeals to advance an appeal concerning the valuation of rent-producing commercial real property on the board of assessment appeals' calendar when the taxpayer provides certain relevant information and requests an advancement on or before July 15 of the same calendar year. The board of assessment appeals may charge a fee to a taxpayer, if the board of assessment appeals advances the taxpayer's appeal. Section 6 places a 5% cap on the amount by which a valuation of property set by a county board of equalization can be increased on appeal. $2000 is appropriated from the general fund to the department of local affairs for use by the board of assessment appeals for implementation of the act. (Note: This summary applies to this bill as enacted.)