Philadelphia's October 5 Market Value Appeal Deadline
The Office of Property Assessment began mailing tax year 2027 Notices of Valuation on June 29, 2026. The informal route, a First Level Review with the Office of Property Assessment, was due September 1, 2026.
The remaining route the city describes is a formal appeal to the Board of Revision of Taxes. The Board states that the deadline to file a 2027 market value appeal is October 5, 2026, the first Monday in October of the year before the tax year.Three grounds the Board listsThe Board's appeal page names three grounds: the estimated market value is too high or too low, the property is not assessed uniformly with similar properties, or the recorded property characteristics are substantially incorrect.
The evidence differs by ground. A market value case rests on sales of similar homes. A uniformity case compares the property's assessment with similar properties. A characteristics case rests on documents showing the record is wrong.Who may appeal and how to fileThe Board treats an owner of record, an equitable owner, a tenant responsible for paying all or part of the real estate or use and occupancy taxes, and a mortgagee in possession as an aggrieved party who may appeal.
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