Texas Property Tax Protest Evidence Checklist: What ARB Actually Cares About (2026 Guide)

Every spring, thousands of Texas homeowners receive a letter that makes their hearts skip a beat: the Notice of Appraised Value. If your valuation jumped too much, you have the right to protest to the Appraisal Review Board (ARB).

But here's the question: What evidence do you actually need to make ARB listen?

Most homeowners make two critical mistakes: 1. They bring irrelevant materials (like complaints about high taxes or their contributions to the community) 2. They miss the key evidence that actually moves the needle

Today, we'll break down the 5 types of evidence ARB truly values—and how to get them.

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🎯 What Does ARB Care About? One Core Principle

Before we dive into the checklist, you need to understand one fundamental concept:

ARB's job isn't to decide if your taxes are "too high"—it's to judge whether your property's Market Value is accurate.

In other words, ARB only cares about one question: > If your house went on the market today, what would it sell for?

Any material that doesn't directly answer this question is wasted effort.

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✅ The Evidence Checklist

1. Comparable Sales (Recent Sale Prices) — Weight: ⭐⭐⭐⭐⭐

What is it? Actual sale prices of homes similar to yours that sold in the past 6-12 months in your area. Why it matters: This is the most direct market evidence. If you can prove "three houses just like mine sold for $X, not the appraised $Y," ARB has a hard time arguing. How to get it:

• Source 1: Your county Appraisal District website (like HarrisCAD, DallasCAD) usually provides public sale data
• Source 2: Zillow, Realtor.com, and other real estate websites
• Source 3: Contact a local real estate agent and ask for a CMA (Comparative Market Analysis)

Key requirements:

• Comps must be actual sale prices, not asking prices
• Prioritize geographic proximity (within 0.5 miles), similar size (±20%), similar age (±10 years)
• Prepare at least 3-5 strong comps

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2. Unequal Appraisal Evidence — Weight: ⭐⭐⭐⭐

What is it? Proof that your property's assessed value per square foot ($/sqft) is significantly higher than similar neighboring properties. Why it matters: Under Texas law, even if your appraisal is within market range, if it's substantially higher than comparable properties' appraisals, you can demand an adjustment. This is a powerful argument. How to get it:

• Look up nearby property appraisals on the Appraisal District website
• Calculate their Appraised Value per Square Foot
• If your $/sqft is 10% or more above similar properties, that's a red flag

Example: ``` Your home: $500,000 / 2,000 sqft = $250/sqft Neighbor A: $450,000 / 2,100 sqft = $214/sqft Neighbor B: $470,000 / 2,050 sqft = $229/sqft

Gap: Your property is ~12% higher than the neighborhood average—strong Unequal Appraisal evidence. ```

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3. Property Condition Issues — Weight: ⭐⭐⭐

What is it? Evidence that your property has issues that reduce its market value, such as:

• Aging or leaking roof
• Failed HVAC system
• Foundation cracks
• Outdated kitchen or bathrooms

Why it matters: If the Appraisal District's data shows your house in "standard condition" but it actually has significant repair needs, this directly impacts market value. How to get it:

• Photos: Take clear, timestamped photos showing problem areas
• Repair estimates: Get written quotes from contractors for repair costs
• Independent appraisal: For serious issues, hire a licensed appraiser for a formal assessment

Note: The Appraisal District values properties "as-is," not "as-repaired." If your house truly has problems, this is a legitimate reason to lower the valuation.

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4. Independent Appraisal — Weight: ⭐⭐⭐⭐

What is it? A professional report from a third-party licensed appraiser about your property's market value. Why it matters: This is one of the most authoritative pieces of evidence. ARB typically takes licensed appraisers seriously. How to get it:

• Contact a local licensed appraiser
• Typical cost: $300-$600

When is it worth the expense?

• Your appraisal jumped significantly (e.g., 30%+)
• Your property value is high (e.g., $500K+), so lowering it saves substantial tax dollars
• You don't have time or energy to prepare other evidence yourself

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5. Income Approach Data (For Investment Properties) — Weight: ⭐⭐⭐

What is it? If your property is an investment property (rental), you can argue its value should be based on the rental income it generates. Why it matters: For investors, a property's value isn't just about sale price—it's about cash flow. ARB sometimes accepts this argument. How to get it:

• Provide lease copies proving actual rent
• Provide market rent analysis (Rent Comps) showing comparable rental rates in the area
• Calculate Cap Rate or GRM (Gross Rent Multiplier) to argue for an income-based valuation

Note: This method mainly applies to clear investment properties, not your primary residence.

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📊 How to Organize Your Evidence Package?

A professional evidence package should include:

1. Cover page: Your name, property address, Account Number, Hearing Date 2. Table of contents: List all attachments 3. Executive summary (1 page): Summarize your argument in 3-5 sentences - "My appraisal is X% above actual market value" - "Here are my 3 core arguments..." 4. Evidence attachments: Organize by checklist order (Comps, Unequal Appraisal, photos, appraisal report, etc.) 5. Conclusion (1 page): State your requested adjusted value and calculation basis

Submission methods:

• Most counties now support online evidence submission (via your Online Account)
• You can also mail paper copies or bring them to your Hearing

Deadlines:

• Evidence submission deadlines vary by county, typically 7-14 days before Hearing Date
• Check your county's specific rules ahead of time!

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🚀 Next Step: Don't Waste Your Time—First Judge If It's Worth It

Preparing an evidence package takes time and effort. Before you invest these resources, there's a more important question:

Is your property actually worth protesting?

Not all appraisals are worth challenging. If your appraisal is already reasonable, or if the tax savings wouldn't cover your time investment, you're wasting energy.

That's why we built TexasTaxSignal.

Enter your address and get results in 30 seconds:

• ✅ Clear Yes/No/Maybe verdict
• ✅ Your appraisal vs. neighbor comparisons
• ✅ Estimated tax savings
• ✅ Success probability score based on data

Spend 30 seconds figuring out if it's worth it, before spending 3 hours preparing evidence. That's what smart investors do.

👉 Analyze Your Property For Free

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Frequently Asked Questions

Q: Do I need all 5 types of evidence? A: No. Usually Comparable Sales + Unequal Appraisal is sufficient. Other evidence is a "bonus." Q: What if I can't find good comps? A: In that case, Unequal Appraisal becomes even more important. Or consider hiring an independent appraiser for professional analysis. Q: Can I use the Appraisal District's own comps? A: Yes, but carefully verify they're truly "comparable." Sometimes districts cherry-pick high-sale-price properties to justify their appraisals. Q: Can I bring evidence on Hearing day itself? A: Technically yes, but highly not recommended. ARB members need time to review materials. If you dump documents on them at the hearing, they may not even finish reading them.

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Bottom line:

ARB isn't your enemy, but they're not your friend either. They're neutral judges, and your job is to convince them with data and logic.

Ready to take action?

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Author: TexasTaxSignal Team Last Updated: February 2026

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> Need help deciding if your property is worth protesting? Try our free analysis tool: TexasTaxSignal.com