Free for Maricopa County homeowners
Are You Overpaying on Maricopa County Property Taxes?
Compare your MCAO value with similar homes nearby and get the evidence to appeal it.
Find your account number at mcassessor.maricopa.gov
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- Public Maricopa County Assessor's Office records
3 bed · 2,150 sqft · built 1998
about $23,000
8 similar homes nearby are assessed about $23,000 lower than this one.
How sure: Medium · 8 similar homes · public records only
Results vary. Many homes are assessed in line with similar homes.
Maricopa County appeal calendar
- Appeal deadline for the 2027 Notice of Valuation
- February 2027MCAO mails 2028 Notices of Valuation
Dates checked September 27, 2026 · Official deadline rule (opens in new tab)
Know your deadline
Within 60 days after the Assessor mails your Notice of Valuation.
Read the appeal guideHow it works
Look up your home
Enter your address or MCAO account number. We pull your record and value history from Maricopa County Assessor's Office public data.
See how your value compares
We find similar homes nearby and show whether yours is valued higher per square foot.
Appeal your way
Save a free evidence packet for your online appeal, or have a pro file for you.
Browse Maricopa County assessments
See how values changed in your neighborhood or ZIP code.
Maricopa County appeal guides
Check the local filing process, prepare your evidence, and verify the deadline on your notice before submitting an appeal.
How to Appeal Your Maricopa County Property Tax Assessment
Complete guide to filing a Petition for Review of Valuation with the Maricopa County Assessor. Learn deadlines, evidence strategies, and how to win your appeal.
Maricopa County SBOE Hearing: What to Expect
Prepare for your State Board of Equalization hearing. Learn hearing procedures, what evidence to bring, and how to present your case.
Using Comparable Properties to Appeal Your Maricopa County Assessment
Learn how to use comparable properties to build a strong property tax appeal case. Understand equity analysis, $/sqft comparisons, and what the Assessor looks for.
Frequently asked questions
Plain answers about cost, deadlines and evidence before you appeal.
What is a property tax appeal?
A property tax appeal is your legal right to challenge the appraised value the county places on your home. In Maricopa County, you file an appeal with the Maricopa County Assessor's Office and present evidence that your home is over-assessed compared to similar properties.
How much does Maricopa Value cost?
Looking up your property, viewing assessment history, and reviewing appraisal and sales comps is free — no login required. Printable reports may require an email sign-in so you can return to them later.
When is the deadline to appeal?
In Maricopa County, your deadline is within 60 days after the Assessor mails your Notice of Valuation (usually February). You can file online via the Assessor's appeals page.
What are comparable properties?
Comparable properties (comps) are nearby homes with similar characteristics — square footage, age, bedrooms, bathrooms, and quality grade. If similar homes are assessed at lower values per square foot, that's evidence your property may be over-assessed.
Do I need a lawyer or tax agent?
No. Many homeowners successfully appeal on their own using evidence like what Maricopa Value provides. Review the official filing instructions and choose representation if you need help with your circumstances.