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.
Adams County
How Adams County, Colorado homeowners can appeal their property valuation, including 2026 intervening-year rules, the CBOE process, deadlines, and senior/veteran exemptions.
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.
Boulder County
Boulder County property tax guide: Sept. 15, 2026 BOE appeal deadline, 2026 residential rates, Senior Homestead exemption, and filing steps.
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.
Douglas County
How to appeal a property valuation in Douglas County, Colorado — assessor protest, the county Board of Equalization, and further appeal options for the 2026 tax year.
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.
Jefferson County
How and when Jefferson County, Colorado homeowners can appeal their property valuation in 2026, including the Assessor, CBOE, and state-level appeal steps.
Larimer County
Larimer property tax appeal deadline was June 8, 2026. Check CBOE options, 92.728-mill example rate, and senior/veteran exemptions.
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