Property tax protest · Denver County, CO
Protest your property taxes in Denver County, CO.
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, and a licensed, USPAP-compliant appraisal is that evidence.
$5, credited toward your appraisal.
Denver County, CO
Home to Denver
- Filing deadline
- June 1
- Regular date; confirm it on your notice
- Valuation date
- January 1
- Values your home
- County assessor
- Hears your case
- County Board of Equalization (CBOE)
- Desktop appraisal
- $225
- $5 check credited
- Timing
- Confirmed with your order
Deadline
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.
Confirm your filing window and recipient requirements before ordering. Service availability and delivery depend on the property, evidence and appraiser. You remain responsible for filing on time.
How it works
How to protest your property taxes in Denver County.
- Step 1
Check your savings
Enter your address and pay $5. We check your Denver County assessment against recent nearby sales.
- Step 2
Order the appraisal
A desktop appraisal valued as of your assessment date, with the $5 credited. Complex homes get one exact quote.
- Step 3
Show us your home
Walk through on your phone so the appraiser sees its condition. A desktop appraisal needs no visit.
- Step 4
File your protest
A state-licensed CO appraiser signs it, with a cover letter and filing steps. You file by your deadline, and the County Board of Equalization (CBOE) hears your case.
The evidence
Boards act on value, not frustration.
However Colorado labels the process, the case underneath is the same: show what your home was actually worth on the assessment date. A licensed, USPAP-compliant appraisal, with comparable sales, documented adjustments and a signed opinion of value, is that showing.
What the appraisal gives you
- Valued as of your assessment date, not today
- Comparable sales with adjustments and citations
- Signed by a state-licensed CO appraiser
- A phone walkthrough; a desktop appraisal needs no visit
- Starting search in Denver County: 3+ comparable sales within ~1 mi, sold within 12 months
Search settings are starting points for the appraiser, not universal filing requirements. The appraiser selects appropriate evidence for the assignment.
Confirm before you file
- The assessment date (January 1) and tax year on your notice
- The recipient: Denver County Assessor
- The electronic filing format and required official forms
- Appraiser availability and delivery timing, before you order
The process
How Colorado handles protests.
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.
Worth knowing in Colorado
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.
FAQ
Denver County questions
When is the Denver County protest deadline?
The regular filing reference is June 1. Confirm the current year, assessment type and any notice-based exceptions with the reviewing authority before relying on this date.
How do protests work in 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.
What evidence should I bring?
Comparable sales as of the assessment date, adjusted for the differences between those homes and yours — potential supporting evidence. Check the reviewing authority’s rules for admissibility, valuation date, forms and filing. An appraisal does not guarantee a reduction.
See if a protest is worth it.
$5, credited toward your appraisal.