The difference between a successful Texas property tax protest and an unsuccessful one often comes down to one thing: the strength of your evidence. Filing the protest form preserves your right to challenge. What you bring to the informal review or Appraisal Review Board (ARB) hearing — your evidence packet — is what actually wins the reduction.

This guide walks through exactly what to include, how to organize it, and what makes the strongest case for each type of protest ground. It also includes a free, copy-paste evidence packet checklist you can use to prepare before your hearing.

What Is a Property Tax Protest Evidence Packet?

A property tax protest evidence packet is the collection of documents, data, and exhibits you prepare to support your case that the appraisal district has overvalued your property. It is not a form — it is your argument, organized and presented in a format the appraiser or ARB panel can review efficiently.

The packet typically includes a cover sheet identifying the property and your requested value, followed by labeled exhibits: comparable sales, comparable assessed values from the district's own records, condition documentation, and any other evidence that supports a lower valuation. In Texas, most protests involve a combination of market value arguments (the property is worth less than the assessed amount) and unequal appraisal arguments (similar properties are assessed lower).

How it fits into the protest process

Filing the protest notice (Form 50-132 or the online equivalent) preserves your right to be heard. It is the procedural step. The evidence packet is the substantive step — it is what you use to actually make your case at the informal review and, if needed, the ARB hearing. One opens the door; the other wins the argument.

When Should You Prepare an Evidence Packet?

You should begin preparing your evidence packet as soon as you receive your Notice of Appraised Value and decide to protest. The earlier you start, the stronger the packet. Here is when an evidence packet is needed:

• Before your informal review — Submitting organized evidence ahead of the meeting signals preparation and gives the appraiser time to review your position before you arrive. Many protests are resolved at this stage.
• At your ARB hearing — Your evidence packet is submitted as your formal presentation to the panel. A complete, organized packet is far more persuasive than verbal arguments alone.
• For written protest rulings — If you cannot attend in person, you may submit your evidence for a written ruling by the ARB in some cases.
• When pursuing arbitration or court — If the protest does not resolve the issue, your evidence packet becomes the foundation for the next stage. A well-documented packet from the initial protest strengthens every subsequent step.

What to Include in a Texas Property Tax Protest Evidence Packet

A strong evidence packet contains seven core components. Missing any of them weakens your position — especially at the ARB stage where the district presents its own evidence simultaneously.

How to Build Your Evidence Packet: Step by Step

Step 1 — Request the appraisal district's evidence first

Before you finalize your own packet, request a copy of the appraisal district's evidence. In Texas, you have the right to receive the district's evidence at least 14 days before your ARB hearing. This evidence typically includes the property data card, the mass appraisal model used to value your property, and sometimes comparable sales the district used. Reviewing it lets you identify exactly where the district's valuation is weakest — and tailor your evidence directly to those weaknesses.

Step 2 — Pull and review your property data card

Access the appraisal district's public portal and download your property data card. Review every field: square footage, year built, quality grade, condition rating, lot size, and improvement details. Errors in any of these fields can materially inflate the assessed value. If you find errors, document the correct information with supporting evidence and build Exhibit D around those corrections.

Step 3 — Build your comparable sales (Exhibit A)

Select three to five recent sales of comparable properties. The tighter the comparability — similar size, condition, location, and sale timing — the more persuasive the evidence. Adjust mentally for obvious differences (a comparable with a pool may sell for more; a distressed sale may be below market). If your area has limited comparable sales, expand the search radius or time window slightly and explain the limitation in your cover sheet.

Step 4 — Pull unequal appraisal comparables (Exhibit B)

Access your county's appraisal district public portal and search for properties similar to yours — same general location, similar size, similar property type. Download or note the assessed value and square footage of each. Calculate the assessed value per square foot for each comparable and compare it to your property's assessed value per square foot. If comparable properties are assessed at a meaningfully lower rate, you have an unequal appraisal argument. Present this as a simple side-by-side table in your packet.

Step 5 — Document condition issues with photos and estimates (Exhibit C)

Walk through the property with a smartphone or camera and photograph every condition issue — damaged roof, aging HVAC, foundation cracks, water intrusion, deferred maintenance, outdated electrical. For significant items, obtain written repair estimates from licensed contractors. The dollar amount of needed repairs, documented in writing, directly supports a lower assessed value. Organize photos with captions, not as a random image dump.

Step 6 — Organize, label, and tab your exhibits

Assemble your packet with a cover sheet first, followed by each exhibit in order (A, B, C, D, E, F). Label each exhibit clearly on the first page. Use divider tabs or clear section headers if submitting a physical packet. If submitting electronically (such as through HCAD's iFile), organize exhibits as clearly labeled PDF files or sections within a single PDF. An organized, easy-to-read packet signals professionalism and makes it easier for the appraiser or panel to follow your argument.

Free Texas Property Tax Protest Evidence Packet Template

Use the checklist below as the cover sheet and organization guide for your evidence packet. Copy and fill in every highlighted field before your informal review or ARB hearing.

Types of Evidence That Strengthen a Protest

The outcome of your protest depends almost entirely on the quality and organization of your evidence. Here is a breakdown of the most effective evidence types, and when each one is most useful:

For more detail on building a strong evidence package, see our guide to Texas property tax protest services and our explanation of market value vs. appraised value in Texas.

Common Evidence Preparation Mistakes to Avoid

Key Texas Property Tax Protest Deadlines

Texas law sets strict deadlines that vary by county and notice date. Missing any of these typically forfeits your right to challenge the value for that year:

For county-specific deadlines, visit our full property tax appeal deadlines by county guide. You can also find general Texas deadline guidance on our Texas property tax deadlines page.

What Happens After You Submit Your Evidence

Understanding the full protest process helps you prepare the right evidence for the right stage:

For more on what comes after a protest that does not fully resolve your case, see our property tax appeal service page and our guide to the Appraisal Review Board hearing process.

When Should You Work with a Property Tax Attorney?

Many Texas property owners prepare their own evidence packet and handle their protest successfully. But there are situations where working with a licensed property tax attorney or consultant produces meaningfully better outcomes:

• High-value residential property — The dollar stakes justify professional support. Custom features, lot premiums, and condition issues require careful comparable selection and valuation analysis.
• Commercial, industrial, or multifamily property — Income-based valuation involves financial modeling, market cap rates, and comparable income property data that a professional can present more effectively.
• Unequal appraisal arguments — Identifying the right comparable properties from the district's own records and presenting them compellingly requires systematic analysis that is easy to get wrong without experience.
• Post-ARB appeals — Binding arbitration and district court appeals require formal legal processes. An attorney is essential at this stage and benefits from having been involved earlier.
• Disputed property data — If the district disputes your factual claims about square footage, classification, or property characteristics, legal representation protects your position in a formal hearing.

Frequently Asked Questions