Houston Property Tax Protest: How to File by May 15

HCAD just mailed your 2026 appraisal notice. Open it, look at the number, and decide in the next two weeks. The deadline to protest is May 15. Texans who file their protest win about half the time, and the average reduction is 8 to 12 percent. On a $400,000 home that is real money. $700 to $1,000 back in your pocket every year you protest.

This is the same evidence pack I assemble for my own home and for clients I closed last year. The whole filing takes about 15 minutes online. You do not need an attorney, and you do not need to pay a service a percentage of your savings unless you want to.

What You're Protesting

You are not arguing your tax rate. The rate is set by the county, school district, city, and any special districts you sit in. You cannot change that. You ARE arguing the appraised market value of your home, which is the number HCAD multiplies by the rate. Lower the appraised value, lower the tax bill.

HCAD assesses your home using mass appraisal. An algorithm looks at sales in your zip code, applies a ratio, and assigns a number. The algorithm is conservative on purpose, but it is also imprecise on any one property. Yours might have flooded, might have a worse layout, might be smaller than the comp it got benchmarked against, and the algorithm did not know.

Who Should Protest

Almost everyone who owns a home in Harris, Fort Bend, Montgomery, Brazoria, or Galveston counties.

• Your appraised value went up. Even if it is still under market, lowering the assessed value lowers your bill. The 10 percent homestead cap means a low protest result this year compounds savings for years.
• Your home has condition issues. Foundation cracks, roof age, dated kitchens, deferred maintenance. None of this is in HCAD's algorithm. You document it.
• Recent comps closed below your appraisal. Three to five sales in your zip code in the last six months that closed for less than HCAD says your home is worth.
• You bought the home in the last year for less than HCAD's number. A purchase price within the last 12 months below the appraised value is the strongest single evidence you can submit.

Step by Step: How to File in Harris County

1. Pull your notice. Find your appraisal notice in the mail or look it up at hcad.org.

2. Build your comp pack. Pull three to five sold comparable homes in your zip code from the last six months.

3. Document condition issues. Walk your home with your phone. Photograph foundation cracks, roof wear, water damage, dated bathrooms and kitchens.

4. Verify HCAD's square footage. HCAD often has wrong square footage, wrong bath count, or wrong year built.

5. File on iFile. Go to hcad.org/hcad-online-services/ifile-protest. Click File a Protest. Select Value over market and Value unequal compared with other properties. Both. Always.

6. Take the iSettle offer or go to hearing. If iSettle cuts your value by what you wanted, take it. If not, request the formal Appraisal Review Board hearing.

Fort Bend, Montgomery, Brazoria, and Galveston

Same process, same deadline. Each county runs its own appraisal district. FBCAD for Fort Bend, MCAD for Montgomery, brazoriacad.org for Brazoria, galvestoncad.org for Galveston.

The Bottom Line

Property tax protests are the highest-ROI 15 minutes a Houston homeowner can spend each year. Deadline is May 15, the process is free, and the typical case is $700 to $1,000 back per year on a $400K home. File on iFile, attach three to five recent comps and a few condition photos, and either accept iSettle or take it to the ARB hearing. File again next year. The 10 percent homestead cap means each successful protest compounds. Use it.

About the Author: Ben Helstein is a dual licensed real estate broker and mortgage loan originator at InSync Homes & Loans in Houston, TX (NMLS #1577314, Company NMLS #1829321). He helps Houston buyers, sellers, and investors navigate real estate and financing under one roof. Learn more at https://insync.homes.