All property valuation appeals must be filed with the Assessor’s office no later than ninety (90) days after the due date of the first quarter payment. The account must be remain current to preserve appeal rights. The deadline to file an appeal your property valuation for tax year 2016 is October 14, 2016. The appeal must be received by the Tax Assessor's Department by the deadline. No exceptions can be made to this deadline for any reason. See RI General Law 44-5-26 for complete details on the appeal procedure and timeline.