How to appeal property taxes in Colorado
County-specific guides with this year's deadlines, the exact forms, and step-by-step filing instructions — researched from official Colorado sources. Or skip the reading: run your address through the free check and get your county's answer in about two minutes.
Arapahoe County
Arapahoe County, CO real property protests run each May-June (2026 deadline: June 8); covers the 6.8%/7.05% assessment rate, mill levies, and tax due dates.
Denver County
Denver homeowners had until June 8, 2026 to protest their values. Learn where to file, what evidence works, the appeal's next steps, and savings.
El Paso County
El Paso County, Colorado property owners appeal values to the Assessor, then the County Board of Equalization. See the 2026 assessment rate, mill levies, intervening-year rules, and how to file.
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