Property tax research

Original data assets and reference tables built from official county assessment rolls and state statutes. Free to cite and link.

• Data study

  The Property Assessment Gap Study 2026

  We analyzed 5.9 million single-family homes from official county assessment rolls in Florida and Texas. In some ZIP codes, comparable homes differ by over 100% in assessed value per square foot.

  5.9Mhomes analyzed
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• Ranking

  The 20 Most Unevenly Assessed ZIP Codes

  The ZIP codes where homes of similar size and age carry the widest spread in assessed value per square foot, and the ZIPs where the most homes sit far above their neighbors.

  127.6%top ZIP spread
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• Reference

  Appeal Deadline Calendar 2026

  Every county we track, with the statutory deadline, the form to file, and the appraisal district that receives it. Texas and Florida in one place.

  34counties tracked
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• Reference

  Homestead Exemption Comparison: TX vs FL

  Statutory exemption amounts, assessment caps, and filing deadlines side by side. Homestead, senior, disabled, veteran, and portability rules with statute references.

  8exemption categories
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• Benchmark

  2026 Appeal Benchmark Report

  Reduction rates, median savings, and hearing outcomes across the counties we track. Use it to size the expected value of your own appeal before filing.

  2026tax year
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Citation and reuse

You are welcome to cite any figure on these pages in reporting, research, or client communication. A link back to the source page (for example, /assessment-gap-study) is appreciated. Journalists and academics can request the underlying county-level roll extracts through our contact page.

General information only, not legal or tax advice. Statutes and roll data change; the source page for each asset carries the current date and methodology.