Property Tax Protest · Denver County, CO
Protest your property taxes
in Denver County, CO.
Home to Denver, Denver County homeowners protest through Colorado’s system: the county assessor sets the value, and the County Board of Equalization (CBOE) hears the case. Boards act on evidence of market value as of the assessment date — a licensed, USPAP-compliant appraisal is that evidence. Start with the $5 check to see what you’d save.
The protest window opens May 1, when Notices of Valuation mail, and closes in early June — the exact last day is printed on your notice. Your assessment notice states the exact date — and the appraiser prepares your report and filing guidance for Denver County’s procedure.
In the even (intervening) year values generally carry over unless the property changed, so the odd-year protest is the main event. Several large counties use an alternate protest calendar with later dates — one more reason the notice, not a blog post, is your authority.
Denver County questions
The protest window opens May 1, when Notices of Valuation mail, and closes in early June — the exact last day is printed on your notice. Your assessment notice states the exact date for Denver County.
Colorado revalues every odd-numbered year, and by law the comparable sales must come from a fixed base period ending June 30 of the preceding even year — so a 2027 value rests on sales through June 30, 2026, not on today’s market. Protests go first to the county assessor starting May 1 (online, by mail, or in person in most counties); if the assessor doesn’t move, you appeal to the County Board of Equalization, and beyond that to arbitration, district court, or the state Board of Assessment Appeals. Because the statute fixes the appraisal date, the strongest evidence is a licensed appraisal tied to that exact date, built from sales inside the statutory study period.
Comparable sales as of the assessment date, adjusted for the differences between those homes and yours — the substance of a licensed appraisal. County Board of Equalization (CBOE) panels see hundreds of cases; a signed, USPAP-compliant report is the document they can act on.
We’re not an AVM, a computer model, or a real-estate agent estimate. Every report is prepared under the Uniform Standards of Professional Appraisal Practice (USPAP) and signed by a licensed appraiser in your state — the same qualification required for mortgage appraisals.