About Tax Gaps TX

Tax Gaps TX helps Texas homeowners find out if they’re paying more than their fair share of property tax — and gives them the evidence to do something about it.

Why we built this

Texas has some of the highest property taxes in the country, and appraisal districts value hundreds of thousands of homes with mass-appraisal models. Those models get a lot of homes wrong — valuing them above comparable properties nearby. When that happens, the homeowner overpays, quietly, every single year.

Appraisal districts and professional protest firms have the data and tools to see these gaps. Most homeowners don’t. We built Tax Gaps TX to close that gap — to put the same public data, analyzed the same way, in front of the people actually paying the bill.

How we determine over-assessment

We don’t guess, and we don’t use generic national estimates. Our analysis is built on the same standard a Texas protest is decided on — “equal and uniform” treatment under Texas Tax Code §41.43(b)(3):

1. We pull public records directly from the county appraisal districts — the Travis (TCAD), Dallas (DCAD), and Fort Bend (FBCAD) central appraisal districts.
2. For each home, we identify truly comparable properties — matched on the district’s own neighborhood code, property class, and decade of construction.
3. We compare the home’s improvement value per square foot to the median of that comparable group.
4. If a home is valued meaningfully above its comparables, we flag it as likely over-assessed and estimate the gap.

We also publish our findings openly — see our reports on the most over-assessed ZIP codes in Travis County and the most over-assessed cities in Dallas County.

What we are — and what we’re not

Tax Gaps TX is an independent, data-driven service. We are not a law firm, a tax advisor, or a government agency, and we are not affiliated with any appraisal district. We help you understand your assessment and prepare evidence; the decision to protest, and the outcome, is yours.

Where we work

Today we cover Travis County (Austin), Dallas County (DFW), and Fort Bend County (Houston area). We’re expanding to more Texas counties — if we’re not in your area yet, you can still leave your details and we’ll let you know when we are.