Colorado property tax appeal guide
AppealTax can help review your assessment, identify errors, organize comparable sales, and prepare a clearer challenge before the local appeal window closes.
Start by checking your Notice of Valuation and gathering your county property record.
Colorado County Guides
Select your county or county-equivalent below for local property tax appeal guidance, basic deadline context, assessment-review steps, and residential tax-bill benchmarks.
Alamosa County
Arapahoe County
Archuleta County
Baca County
Bent County
Boulder County
Broomfield County
Chaffee County
Cheyenne County
Clear Creek County
Conejos County
Costilla County
Crowley County
Custer County
Delta County
Denver County
Dolores County
Douglas County
Eagle County
Elbert County
El Paso County
Fremont County
Garfield County
Gilpin County
Grand County
Gunnison County
Hinsdale County
Huerfano County
Jackson County
Jefferson County
Kiowa County
Kit Carson County
Lake County
La Plata County
Larimer County
Las Animas County
Lincoln County
Logan County
Mesa County
Mineral County
Moffat County
Montezuma County
Montrose County
Morgan County
Otero County
Ouray County
Park County
Phillips County
Pitkin County
Prowers County
Pueblo County
Rio Blanco County
Rio Grande County
Routt County
Saguache County
San Juan County
San Miguel County
Sedgwick County
Summit County
Teller County
Washington County
Weld County
Yuma County
Statewide Residential Benchmark
A broad statewide benchmark for Colorado is an effective property tax rate of about 0.60% of home value. On a $400,000 residential property, that equals about $2,400 per year. This is a statewide comparison point, not a guarantee of what any parcel will owe.
Basic statewide deadlines
Colorado appeal windows move fast
Colorado real property protests generally run from May 1 through June 8, with follow-up Board of Equalization appeal deadlines later in the year.
Start by checking your Notice of Valuation and gathering your county property record.
Then confirm the current year’s instructions with your county assessor, local board, municipality, or state tax authority, especially if a deadline falls on a weekend or legal holiday.
Common questions
When is the Colorado property tax appeal deadline?
Colorado real property protests generally run from May 1 through June 8, with follow-up Board of Equalization appeal deadlines later in the year. Confirm the exact current-year deadline with your local assessing office.
What should I gather first?
Gather your assessment notice, property record card, tax bill, exemption information, photos, repair estimates, and comparable sales.
Can AppealTax help with a Colorado assessment review?
AppealTax can help review your assessment, identify errors, organize comparable sales, and prepare a clearer challenge before the appeal window closes.