Data Study · 13 Texas counties · June 2026
More than 1,040,853 Texas homes are assessed above comparable homes nearby.
We ran 4,625,840 homes across 13 Texas counties through the same unequal-appraisal comparison their appraisal review boards use. An estimated $1.6 billion a year is overpaid because these homes sit above what comparable homes on their own block are assessed at.
County by county
| County (metro) | Over-assessed | % of homes | Overpaid/yr |
|---|---|---|---|
| Tarrant (Fort Worth) | 220,321 | 37.9% | $290.7M |
| Harris (Houston) | 218,368 | 20.2% | $368.6M |
| Dallas (Dallas) | 142,461 | 23.1% | $248.1M |
| Bexar (San Antonio) | 132,466 | 23.6% | $107.8M |
| Travis (Austin) | 62,948 | 18.4% | $171.1M |
| Collin (Plano / McKinney) | 62,181 | 17.5% | $130.3M |
| Fort Bend (Sugar Land) | 49,974 | 17.7% | $79.7M |
| Denton (Denton / Frisco) | 49,299 | 17.5% | $62.7M |
| Williamson (Round Rock) | 30,059 | 13.2% | $63.4M |
| Nueces (Corpus Christi) | 28,855 | 26.6% | $31.2M |
| Jefferson (Beaumont) | 19,202 | 31.7% | $10.1M |
| Bell (Killeen / Temple) | 18,645 | 17.8% | $17.2M |
| Johnson (Cleburne / Burleson) | 6,074 | 30.1% | $6.7M |
Worst ZIP codes in San Antonio (Bexar): 78202 (43%), 78207 (41%), 78210 (39%), 78201 (38%), 78204 (38%). Full per-metro ZIP detail on the Texas leaderboard.
Methodology
We analyzed every residential property in 13 Texas counties using each county's 2026 public appraisal records, at true market value. For each home we found comparable homes in the same appraisal neighborhood, within 25% of its living area and 10 years of its build year (excluding mobile homes and tear-downs from the comparison), then compared its assessed value to the average of its closest comparables. A home is counted as over-assessed when its assessed value sits more than 5% above that comparable average, the same unequal-appraisal standard Texas appraisal review boards apply under Texas Tax Code 41.43(b)(3). Annual overpayment applies each county's effective tax rate to the assessed gap.
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Renders a live "is your home over-assessed" card. Citation: AppealMyTax Texas Over-Assessment Study, June 2026.
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