What is a property tax appeal?

A property tax appeal (also called a protest in Texas) is a formal process where you challenge your county appraiser's assessed value of your home. You file with the county Appraisal Review Board (ARB), present comparable-sales evidence that your home is overvalued, and the board issues a ruling.

When is the Texas property tax appeal deadline?

In Texas, the deadline to file a property tax protest is May 15 each year (or 30 days after your appraisal notice is mailed, whichever is later). The 2026 deadline has passed; the next protest window is April-May 2027.

How much can I save by appealing my property taxes?

Homeowners who appeal save an average of $774 per year in Texas, and you can protest again every year. Success rates range from 80-91% when you bring 3-5 comparable sales as evidence.

What's the difference between AppealMyTax and Ownwell?

AppealMyTax charges a flat $99, one time, for a complete personalized appeal packet you file yourself. You keep 100% of your savings every year. Ownwell keeps a 25-35% contingency on whatever you save and O'Connor keeps about half, meaning a $2,461 reduction costs you roughly $615-$1,230 every year forever. We charge $99 once and keep nothing.

Live from 1,099,363 Harris County records

Which Houston ZIPs Are Overassessed in 2026?

Color shows the share of homes assessed above comparable properties. Click any ZIP, then check your own address free.

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under 20%20 to 35%35 to 50%over 50% of homes overassessed

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<iframe src="https://appealmytax.dev/embed/map" width="100%" height="640" style="border:1px solid #E5E7EB;border-radius:12px;" loading="lazy" title="Houston property tax overassessment map by ZIP code"></iframe>
<p style="font-size:12px;">Map data: <a href="https://appealmytax.dev/texas/houston-map">Houston property tax assessments by ZIP, AppealMyTax</a></p>

Source and methodology: aggregates are computed by ZIP code from Harris County appraisal district public records. A home is flagged as overassessed when its assessed value sits above the ZIP level comparable benchmark (typical dollars per square foot for similar homes in that ZIP). Estimated annual overpayment uses the county average effective tax rate; actual bills vary by ISD, city, and MUD. ZIP boundaries are U.S. Census Bureau ZCTAs. Data last refreshed June 10, 2026.