When is the deadline to file a property tax protest in Harris County?

The deadline is May 15 or 30 days after the date your appraisal notice was mailed, whichever is later. File early to get a better hearing time.

Can I file my Harris County property tax protest online?

Yes, HCAD offers online protests through their iFile system at hcad.org. You can also file by mail or in person.

What is the success rate for property tax protests in Harris County?

Historically, about 70-80% of protests in Harris County result in some reduction. Having strong comparable sales evidence significantly improves your chances.

Do I need a lawyer to protest my property taxes?

No. Most homeowners successfully protest on their own. The process is designed for self-representation. A well-prepared evidence packet with comparable sales is often all you need.

Guides/Texas/Harris County

Harris County, Texas

How to Appeal Property Taxes in Harris County (2026)

Appeal Deadline

May 15 (or 30 days after notice date, whichever is later)

County Assessor Appeal Forms

Overview

Harris County, home to Houston, has over 1.8 million parcels and one of the highest property tax rates in Texas. The Harris Central Appraisal District (HCAD) sends out appraisal notices each spring, and homeowners have a limited window to file a protest. With Houston's rapidly changing real estate market, over-assessments are common, making Harris County one of the best places to file an appeal.

Step-by-Step Appeal Process

Receive your Notice of Appraised Value from HCAD (typically mailed in April)

Review your property details for errors (square footage, bedrooms, condition)

File your protest online at hcad.org, by mail, or in person before May 15 (or 30 days after notice date)

Gather evidence: comparable sales, photos of property condition issues, independent appraisal

Attend an informal hearing with an HCAD appraiser (most cases are resolved here)

If not resolved, proceed to the Appraisal Review Board (ARB) formal hearing

Receive the ARB decision. If still unsatisfied, you can appeal to district court or binding arbitration

What Evidence Do You Need?

3-5 comparable sales within 1 mile, sold within the last 12 months

Photos showing property condition issues (deferred maintenance, foundation issues, etc.)

Independent appraisal from a licensed appraiser

Repair estimates for any significant issues

Evidence of unequal appraisal (neighbors with similar homes appraised lower)

Common Reasons for Successful Appeals

Comparable sales show a lower market value than the assessed value

Property condition issues not reflected in the assessment (foundation problems, roof damage, etc.)

Incorrect property details (wrong square footage, bedroom count, or lot size)

Unequal appraisal compared to similar neighboring properties

Recent purchase price was significantly lower than assessed value

Market decline in the specific neighborhood

Tips for Success

1File your protest even if you plan to negotiate informally — you need to file to preserve your rights

2The informal hearing is your best chance for a quick resolution. Be polite, organized, and fact-based

3Bring printed copies of all your evidence to hearings

4Focus on comparable sales closest to your home in distance and characteristics

5If you recently bought your home, your purchase price is strong evidence of market value

6Check if you're enrolled in the homestead exemption — it can save additional money

Frequently Asked Questions

Check Your Assessment in Harris County

Enter your address to see if you're overpaying and get a professional appeal packet for $49.

Free Assessment Check

This guide is for informational purposes only and does not constitute legal advice. Deadlines and procedures may change. Always verify current information with your county assessor.