Duncan Property Tax Quick Facts
- Location
- Duncan, Arizona
- Greenlee County
- Assessed By
- the Greenlee County assessor
How to Appeal Property Taxes in Duncan
Check your assessment
Enter your Duncan address for a free 60-second check. We compare your assessed value against comparable sales and neighborhood data.
Get your evidence packet
If over-assessed, pay $45 for a complete appeal packet with comparable sales, equity analysis, and pre-filled forms for Greenlee County.
File your appeal
Submit your appeal to Greenlee County. Our filing guide walks you through every step.
About the Duncan Property Market
Duncan is a city located in Greenlee County, Arizona. Every property inside the Duncan city limits is assessed by the Greenlee County assessor, which applies Arizona property tax rules uniformly across the county.
Because Duncan property values are set at the county level, the same assessment rules apply to homes throughout the city. Homeowners who believe their Duncan home is over-assessed have the right to file a appeal directly with Greenlee County.
Under Arizona law, a appeal cannot increase your assessed value — it can only stay the same or go down. That makes a Duncan appeal a low-risk way to push back against an over-assessment, especially for homeowners with strong comparable sales evidence.
Duncan Property Market Context
The property tax picture in Duncan is shaped as much by Arizona statewide policy as by anything unique to a city.
Arizona market character
Arizona home values, especially in Maricopa and Pima counties, have climbed rapidly over the past five years, pulling assessed values along with them. Effective tax rates hover around 0.6%, below the national average, but on newly built or appreciating homes the dollar impact is meaningful.
How Arizona handles appeals
Arizona uses a Full Cash Value system appealed first to the County Assessor, then to the State Board of Equalization, then Tax Court. Assessed value cannot increase as a result of an appeal.
When to file in Duncan
Notices mail in late February. You have 60 days (until roughly April 25) to petition the assessor. Missing that window forces you to wait a full year.
Common Duncan Property Types
Duncan homeowners typically file protests across these property categories:
Single-family homes
The most common residential type and the dominant protest category.
Condominiums
Common in denser parts of the city and near employment centers.
Townhouses
Attached-home neighborhoods in newer subdivisions.
Small multi-family
Duplexes and 2-4 unit buildings assessed as income property.
Commercial
Retail, office, and small commercial along major corridors.
ProtestMax supports all of the above property types in Duncan. Each appealpacket is tailored to the property's classification and uses comparable sales from Duncan and surrounding Greenlee County neighborhoods.