Coconino County property tax appeal 2028: deadline, forms and how to file
To appeal a Coconino County assessment, file with the Coconino County Assessor's Office by mail, by email or in person; in Arizona the deadline is 60 days after the Notice of Value is mailed. Confirm the exact date on your notice or with the assessor; we add each county's 2028 date here when it is published.
Notices of Value are mailed between January 1 and March 1; the 2027 (tax year) annual real property notice was mailed February 10, 2026.
Data as of 20 Oct 2026 · Coconino County Assessor's OfficeCheck your own assessment
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How to file in Coconino County
- Step 1
File the appeal
Use the method your notice lists, usually Form 82130R, by the deadline on the notice.
- Step 2 · before the hearing
Prepare and submit your evidence
The petition must state your opinion of full cash value and the information behind it (A.R.S. §42-16051): for a home, at least one comparable property’s value or sale in your area, or your own recent purchase. Appeal the total value, not land and improvements separately. Issues you do not raise with the assessor generally cannot be raised later at the board (§42-16056), so put all of it in the first petition.
- Step 3
Meet, then hear
An petition for review with Coconino County Assessor's Office comes first; if you decline the offer, the Coconino County Board of Equalization hears the case. Most reductions happen at the first step.
Before you file: how to read your notice · evidence that works · informal vs formal hearing · when not to appeal
Forms
| Form | Number | Use | Format |
|---|---|---|---|
| Residential Petition for Review of Valuation | 82130R | The petition to the assessor for a single-family home. Give your opinion of full cash value and the comparables behind it. | |
| Petition for Review of Real Property Valuation | 82130 | The petition for any other real property. | |
| Real Property Petition for Review of Valuation (link text on county forms page) | 82130 | County-hosted copy of the DOR petition for the first-level appeal to the Assessor (file name says Residential; confirm whether 82130 or 82130R) | |
| Petition for Review of Notice of Change | 82130NC | Appeal of a September Notice of Change (goes to the Board of Equalization) | |
| Multiple Parcel Appeal Form | 82131 | Required with the petition for several parcels forming one economic unit |
Appeal levels
| Level | Who hears it | Deadline | Cost |
|---|---|---|---|
| Petition for review | Coconino County Assessor's Office | 60 days after the Notice of Value mailing date | Free |
| Board of Equalization | Coconino County Board of Equalization (Board of Supervisors) | 25 days after the assessor’s decision is mailed | Free |
| Court | Arizona Tax Court (small-claims division available) | 60 days after the last board decision is mailed, or directly by December 15 | Court filing fee; taxes must be paid on time or the appeal is dismissed |
What evidence the board accepts
The petition must state your opinion of full cash value and the information behind it (A.R.S. §42-16051): for a home, at least one comparable property’s value or sale in your area, or your own recent purchase. Appeal the total value, not land and improvements separately. Issues you do not raise with the assessor generally cannot be raised later at the board (§42-16056), so put all of it in the first petition.
Coconino County questions
When is the Coconino County appeal deadline in 2027?
60 days after the mailing date of your Notice of Value, which arrives before March 1, 2027. The exact date is printed on the notice. That notice sets your value for tax year 2028.
How do I file a petition in Coconino County?
Mail or deliver Form 82130R (homes) or 82130 to the Coconino County Assessor's Office, Coconino County Assessor, 110 E. Cherry Ave., Flagstaff, AZ 86001. A postmark by the deadline counts as on time.
What part of my value can I appeal?
The full cash value and the property’s legal class. The limited property value, which your tax is based on, follows from the full cash value by formula and cannot be appealed on its own.
What if the assessor denies my petition?
You have 25 days from the mailing of the assessor’s decision to appeal to the Coconino County Board of Equalization. Include the Notice of Value and the decision.
How do I contact the Coconino County Assessor's Office?
Mail: Coconino County Assessor, 110 E. Cherry Ave., Flagstaff, AZ 86001. Phone: (928) 679-7962. Hours and walk-in details: coconino.az.gov.
Can I go straight to court?
Yes. You can skip the administrative levels and file in the Arizona Tax Court by December 15, or file within 60 days of the last board decision. Owner-occupied homes qualify for the small-claims division. Taxes must be paid on time.
Check whether yours is over-assessed
Nearby counties
Navajo County · Yavapai County · Mohave County · Apache County · Gila County · Maricopa County · La Paz County
- Coconino County Assessor home
- Coconino County Assessor - File an Appeal
- Coconino County Assessor - Forms
- A.R.S. §42-15101 — Notice of valuation
- A.R.S. §42-16051 — Petition for review to the assessor
- A.R.S. §42-16056 — Assessor’s decision and appeal
- A.R.S. §42-16201 — Appeal to court
- A.R.S. §12-172 — Tax court small claims
- Arizona DOR — Property Tax Appeals
- Arizona DOR — Property Tax Forms
- U.S. Census Bureau, county population estimates (2024) and county gazetteer (2024).