Short answer: You can tell if your Texas property tax appraisal is too high by comparing it to recent sales of similar homes in your neighborhood, checking if your assessed value exceeds the 10% homestead cap, or if your home's condition doesn't match the appraisal. Look for differences between your appraised value and what comparable properties are assessed for, which could indicate an over-assessment.
- Compare your appraisal to recent neighborhood sales.
- Check for a 10% homestead cap violation.
- Verify your home's condition matches the appraisal.
- Look for unequal appraisals on similar homes.
- Protest by May 15 (or 30 days) if over-assessed.
What Does "Too High" Even Mean for a Property Appraisal?
In Texas, your property tax appraisal can be considered “too high” in a couple of key ways. First, if the appraised value (what the county thinks your home is worth) is significantly higher than what your home would actually sell for on the open market today, based on recent comparable sales. This is often called the market value argument. Second, even if your market value is accurate, your appraised value might be too high if similar homes in your neighborhood are assessed for less. This is known as an equal and uniform appraisal issue.
For homeowners with a homestead exemption, there’s also a special protection: the 10% homestead cap, which limits how much your appraised value can increase each year.
How Do I Compare My Appraisal to My Neighbors? (Market Value)
One of the most effective ways to determine if your appraisal is too high is by looking at recent sales of comparable homes in your neighborhood. Your county appraisal district (CAD), like Travis Central Appraisal District (TCAD) or Dallas Central Appraisal District (DCAD), assesses your home’s value based on what they believe it would sell for.
Here’s what to look for:
- Recent Sales: Find homes similar to yours in size, age, condition, and amenities that have sold in the last 12-18 months within your immediate area.
- Assessment Values: Check the assessed values of those comparable properties. If your appraised value is notably higher than what similar homes recently sold for, or if your neighbors’ homes are assessed for significantly less, you likely have a case for over-assessment.
Gathering this data can be time-consuming, but it’s crucial evidence. For a quick check to see if you have a potential over-assessment gap based on public appraisal data and comparable homes assessed for less than yours, use the free tool at Tax Gaps TX. Just enter your address.
What is the 10% Homestead Cap, and How Does it Help?
If you have a homestead exemption on your primary residence, Texas law provides a significant protection: your home’s appraised value for tax purposes cannot increase by more than 10% per year, regardless of how much its market value might have jumped. This is called the homestead cap, and it kicks in starting the second year you have your homestead exemption.
For example, if your home was appraised at $300,000 in 2025 and you have a homestead exemption, your 2026 appraisal for tax purposes generally cannot exceed $330,000 (a 10% increase), even if the market value of your home has soared to $400,000. If your appraisal notice shows a taxable value increase greater than 10% for an established homestead, that’s a clear sign of an error.
Keep in mind that this cap only applies to qualified homesteads and does not apply to new home purchases in their first year of ownership, or to properties that are not primary residences.
What is an "Equal and Uniform" Appraisal, and Why Does it Matter?
Beyond market value, Texas Tax Code 41.43(b)(3) gives homeowners the right to protest their appraisal if it’s not “equal and uniform” with similar properties in their neighborhood. This means that even if the CAD says your home’s market value is accurate, you can argue that other similar homes are assessed at a lower value per square foot or overall, making your appraisal unfairly high.
This can be a powerful protest argument, as it focuses on fairness relative to your neighbors. You’ll need to identify comparable properties that are truly similar to yours (same general age, size, construction, condition, and location) but have lower assessed values. This suggests the appraisal district might be valuing your home inconsistently compared to others.
Key Red Flags That Your Appraisal Might Be Too High
Here are some common signs that your property tax appraisal might be higher than it should be for the 2026 tax year:
- Significant Jump in Value: Your appraised value increased dramatically in one year, especially if you have a homestead exemption and it’s over the 10% cap.
- Neighbors Assessed Lower: Similar homes in your immediate vicinity (same block or subdivision) have significantly lower appraised values, or sold for less recently.
- Recent Purchase Price: You bought your home recently for less than the current appraised value. While the CAD isn’t bound by your purchase price, it’s strong evidence of market value.
- Home Condition Issues: Your home has noticeable deferred maintenance, needs significant repairs, or has outdated features that aren’t reflected in a high appraisal.
- Negative Market Trends: You’re aware of a slowdown in the local housing market, but your appraisal still increased significantly.
- Incorrect Property Details: Your appraisal notice lists incorrect information about your home (e.g., wrong square footage, number of bedrooms, lot size, or amenities).
What Are the Deadlines to Protest My Appraisal?
If you believe your property tax appraisal is too high, it’s crucial to act before the deadline. In Texas, the standard deadline to file a protest with your county appraisal district (CAD) is May 15 or 30 days after your Notice of Appraised Value was mailed to you, whichever is later. However, deadlines can sometimes vary due to weekends, holidays, or specific county policies.
Always verify the exact protest deadline for your property by checking your official Notice of Appraised Value or contacting your specific county appraisal district (e.g., TCAD, DCAD) directly. Missing this deadline can mean you lose your chance to appeal for the current tax year.
Next Steps If You Think Your Appraisal is Too High
If you’ve identified signs that your property tax appraisal is too high, the next step is to prepare and file a protest with your county appraisal district. This involves gathering evidence to support your claim, such as comparable sales data, photos of your home’s condition, or details of unequal appraisals for similar properties.
The protest process typically involves an informal review with an appraiser, followed by a formal hearing with the Appraisal Review Board (ARB) if an agreement isn’t reached. For homeowners seeking an informed advantage, Tax Gaps TX offers a free home check at app.taxgapstx.com/check. In about a minute, you can see your estimated over-assessment gap for Travis or Dallas county. A specialist can then help you understand the evidence and whether protesting is worthwhile for your specific situation.
Signs Your Texas Property Tax Appraisal Might Be Too High
| Sign of Potential Over-Assessment | What It Means for Your Property | Action You Can Take |
|---|---|---|
| Your Appraisal Jumped Significantly (e.g., 20%+) for 2026 | Even with market growth, this might exceed the 10% homestead cap or indicate an error if you don't have a homestead. | Check your homestead cap and gather evidence of slower market growth or declining value. |
| Similar Homes in Your Neighborhood are Assessed Lower | Your property might be valued unequally compared to neighbors, violating Texas Tax Code 41.43(b)(3). | Identify 3-5 truly comparable homes with lower assessed values or recent lower sales prices. |
| Your Home's Condition Has Declined or Needs Major Repairs | The CAD may not be aware of issues affecting your home's true market value. | Document all damage, needed repairs, or outdated features with photos and contractor estimates. |
| You Recently Purchased Your Home for Less Than the Appraised Value | Your recent purchase price is strong evidence of the current market value. | Provide your closing documents (HUD-1 statement) as proof of market value. |
Check your home in minutes
Tax Gaps TX has a free home check at app.taxgapstx.com/check — enter your address and, in about a minute, see your estimated over-assessment gap for Travis (TCAD) or Dallas (DCAD) county, based on public appraisal data and comparable homes assessed for less than yours. A specialist can then walk you through the evidence and whether it's worth protesting.
Frequently asked questions
Does buying my home recently for less than the appraisal automatically mean it's too high?
Not automatically, but it's strong evidence. While the CAD may argue your purchase was an outlier, a recent arms-length sale below the appraised value is a key piece of market value evidence that you should absolutely use in your protest.
How do I find comparable sales data for my neighborhood?
You can often find some sales data on your county appraisal district's website, but it might be limited. Real estate websites can also provide recent sales. For a more robust analysis, especially for finding unequal assessments, using a specialized tool or expert who can access more comprehensive data is often helpful.
What if my county appraisal district (CAD) ignores my evidence?
If you can't reach an agreement during the informal review, you have the right to present your evidence to the Appraisal Review Board (ARB). The ARB is an independent panel that will hear both your side and the CAD's side. If you're still not satisfied, you may have options like binding arbitration or judicial appeal, depending on the value of your property.
Can I protest my appraisal every year?
Yes, you absolutely can protest your property tax appraisal every single year if you believe it's too high. It's a fundamental right as a Texas property owner, and many homeowners successfully protest annually to ensure they're not overpaying.
What is the difference between market value and appraised value?
Market value is the most probable price a property would bring in a competitive and open market, assuming a fair sale. Appraised value is the value assigned by the CAD for tax purposes. While the CAD aims for the appraised value to equal market value, they often differ, especially for homesteads protected by the 10% cap or if the CAD's market analysis is flawed.
Tax Gaps TX provides general information, not legal, tax, or financial advice. Deadlines and exemption amounts change; confirm current figures with your county appraisal district or the Texas Comptroller.