Maricopa County Assessor's Office

Maricopa County Assessor's Office The Assessor's Office is the fourth largest assessment jurisdiction in North America.

The Maricopa County Assessor's Office, led by Assessor Eddie Cook, locates, identifies ownership and usage and annually notices & administers 1.8 million real & personal property parcels/accounts with a value of more than a trillion dollars. The Maricopa County Assessor's Office is a constitutionally based office within Arizona that is responsible for noticing and valuing up to 1.8 million real and personal property accounts. In Arizona, the Assessor's Office is responsible for valuing all property for Ad Valorem (according to value) taxation. The property taxes that utilize our underlying values are then used to fund critical government functions, from police and fire districts, to schools and flood control districts.

Our goal is to provide a fair and equitable service to property owners across Maricopa County. That starts by making sur...
09/14/2026

Our goal is to provide a fair and equitable service to property owners across Maricopa County. That starts by making sure everyone who qualifies for our exemption programs gets the relief they need.

Our efforts to modernize assessor communications continue with the passage of S.B. 2173. Electronic Notices of Claim mea...
09/13/2026

Our efforts to modernize assessor communications continue with the passage of S.B. 2173. Electronic Notices of Claim means a more convenient way to appeal your Notice of Value, less waiting in traffic, and a more efficient use of your tax dollars.

Addressing title deed fraud is one of Assessor Cook's top priorities. Today, we are rolling out new ways to protect your...
09/12/2026

Addressing title deed fraud is one of Assessor Cook's top priorities. Today, we are rolling out new ways to protect your property.

Photo ID and thumbprint verification are now required when recording a document, and we are actively developing a notification system that is set to go live on our website by January 1.

The deadline to file for our Valuation Relief Programs is coming up! Head to our website to see more information on the ...
08/31/2026

The deadline to file for our Valuation Relief Programs is coming up! Head to our website to see more information on the programs and resources that we offer to eligible property owners.

The deadline to apply is TOMORROW Sept. 1.

August is National Golf Month, and with 169 golf courses, Maricopa County is home to some of the most stunning fairways ...
08/25/2026

August is National Golf Month, and with 169 golf courses, Maricopa County is home to some of the most stunning fairways in the country. Golf courses are among the more unique properties we value, with a process that differs quite a bit from a standard commercial property.

🚨Business Owners 🚨We sent over 77,000 Notices of Value for Business Personal Property. This notice shows the assessed va...
08/14/2026

🚨Business Owners 🚨

We sent over 77,000 Notices of Value for Business Personal Property. This notice shows the assessed value of the tables, desks, computers, machinery, and other equipment used for each business.

Be sure to check your mailbox, or email inbox to see how your values have changed.

As you review your notice, if you find an error or believe that your property was misvalued, feel free to file an appeal by Monday, Sept. 14.

“Arizona will lead the country with its new law, and hopefully other states will follow us" - Maricopa County Assessor E...
08/11/2026

“Arizona will lead the country with its new law, and hopefully other states will follow us" - Maricopa County Assessor Eddie Cook on Senate Bill 1479.

Assessor Cook helped spearhead this legislation, which puts key safeguards in place to counter deed fraud - like stricter ID requirements, felony charges for those committing the crime, and alert systems to inform homeowners if there are changes to their property.

Assessor Cook spoke with Catherine Reagor at azcentral on the issue of deed fraud and why he's been so passionate about advocating for stronger protections for Arizonans.

You can read the full article below.

Hundreds of homeowners in Arizona have filed complaints about deed fraud, a new scam that can cost people their homes with shocking ease.

Our team has received several calls about a claim circulating online instructing homeowners born in the 1940s, 1950s, an...
08/06/2026

Our team has received several calls about a claim circulating online instructing homeowners born in the 1940s, 1950s, and 1960s to request a form from our office that significantly reduces their property taxes.

We have reviewed the claim and determined this information to be inaccurate.

There is no evidence that Congress has enacted a nationwide age-based property tax change.

Property tax laws are established at the state and local level, not through a federal program. Any exemptions, freezes, credits, or other forms of property tax relief for homeowners, including seniors, are determined by state law and local regulations, and they vary from state to state.

If you're unsure whether you qualify for any of the Valuation Relief Programs available in Arizona, we're happy to help! Please contact our office or visit our website for accurate information.

Assessor Cook and Cook County Assessor Fritz Kaegi spoke this week to a packed house of county officials at the NACO Ann...
07/18/2026

Assessor Cook and Cook County Assessor Fritz Kaegi spoke this week to a packed house of county officials at the NACO Annual Conference in New Orleans on insights into the property assessment process and how the work of the assessors impacts counties.

We are proud of our amazing team and the dedication to public service that they bring to our office every day! This week...
07/15/2026

We are proud of our amazing team and the dedication to public service that they bring to our office every day!

This week we had a chance to celebrate our One Team at our summer employee recognition and appreciation event with years of service pins awarded to employees at the 5, 15, 20, 25, and 30-year milestones and special recognition given to team members who were nominated by their workgroups.

Address

301 West Jefferson Street
Phoenix, AZ
85003

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+16025063406

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