Methodology

• Every number links to the page we fetched and shows the date we checked it (Oct 27, 2026).
• We label sources primary (government agency) or secondary (a firm or analyst citing official records).
• When a figure isn't published in a source we checked, we show Not published. We never estimate or fill gaps.
• Texas "value reductions" are total value reductions from protests reported for the 2025 tax year, not a per-protest win rate.
• Texas primary-source protest outcomes (appraisal district annual reports, Comptroller ARB survey) are listed in data/tx_protest_outcomes.csv and on each county page. No district we checked publishes a per-protest win rate.
• Colorado rates count decided commercial petitions only.
• Past results describe groups of properties. They are not a prediction for yours.

Sources

• Texas Comptroller: Property Tax Protests and Appeals (primary)
• US Census Bureau: 2020 Texas county codes (254 counties) (primary)
• O'Connor: Major Texas Metro Areas Landed Huge Savings with Informal and Formal Appeals (2025 appraisal district data) (secondary)
• SVA Tax: Colorado appeal success rates 2025 (county board records) (secondary)
• Iowa Property Assessment Appeal Board: Appeal Data & Statistics (primary)

Information only, not legal or tax advice. Past results don't guarantee future outcomes.