May 1: This is taxable status date (the date on which the type, use, condition and ownership of a property is determined and then valued as of the prior July 1).
The Prior July 1: This is the effective valuation date for assessment purposes; therefore, for the June 1, 2018 tentative assessment roll, the valuation date is July 1, 2017 for all improvements that exist, or did not exist, on May 1, 2018.
June 1: This is the annual tentative assessment roll filing date.
June 20: This is Grievance Day (Tuesday, June 19, 2018); once a year property owners can challenge their property assessment. This day is always the 3rd Tuesday in June, by law; it is not a discretionary date.
September 15: This is the statutory filing deadline for the final assessment roll.
October 16: This is the last day to file appeals against a final roll.