Maricopa County Assessor's Office

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Submit Your Appeals Online!

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Property owners and their representatives can submit commercial and residential valuation appeals through an online portal starting Friday, Feb. 26!

“Our goal is to be a best-in-class organization, and our new online appeal portal helps us get there,” Assessor Cook said. “This new platform is a great new asset for our organization and property owners, and we look forward to bringing more forms and applications online as the year progresses.”

Click Appeals on the top of our website to get started. The platform is easy to use; input your parcel number and your address will auto-populate.

If you have questions regarding our new appeal platform, give us a call at 602.506.3406 and a member of our team will be happy to assist you.

Having trouble logging in? View our tutorial (PDF)

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Notices of Value Issued February 26

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Notices of Value will be mailed or sent to property owners via eNotice Friday, Feb. 26. Each year, the Assessor's Office identifies, locates, and values each parcel in the fastest-growing county in the country.

Property values in Arizona are set a full year ahead to allow for an extensive appeal process. Unlike other forms of taxation, property taxes allow residents to both appeal their individual values and testify on how much revenue should be raised by tax jurisdictions.

“I’m especially proud of the hard work our team has produced in what was a truly unprecedented year,” said Assessor Eddie Cook. “They went above and beyond to complete our statutory requirements ahead of schedule, developed innovative solutions to complete appeals virtually for the first time, and maintained a healthy, fiscally conservative budget.”

Median property values for single-family residential homes in Maricopa County rose for the ninth consecutive year, and most property types increased for the 2022 tax year. Apartments saw the largest increase of 15.4% while commercial property increased the least by 2.1%.

Property owners have 60 days from the Feb. 26 issuance to file an administrative appeal with the Assessor’s Office if they believe their property was improperly valued or misclassified. Last year, the Assessor’s Office conducted more than 1,100 appeal meetings virtually for the first time. This year, the organization will deliver an easier way to submit appeals online. Property owners and their representatives will be able to submit appeals through an online pilot portal and will continue to conduct appeal meetings virtually for the foreseeable future.

“Our goal is to be a best-in-class organization, and our new appeal process helps us get there,” Assessor Cook said. “The online appeal platform is a great new asset for our organization and property owners, and we look forward to bringing more forms and applications online as the year progresses.”

Notice of Value Frequently Asked Questions and Key Terms (PDF)

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Educational Video Series Debuts!

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We are excited to bring you the first of our educational videos!

The first video, seen below, discusses Full Cash Value and Limited Property Value, what the terms mean, and how it impacts property owners.

Videos to come this year will highlight our Notice of Value, the appeal process, and some of our complex terms to better help you know what we do, how we do it, and how it impacts your property.

We hope you enjoy the videos!