Harris County, TX property tax appeal results & deadline
Protest deadline
May 15, or 30 days after the appraisal district mails your notice of appraised value, whichever is later
That rule applies in Harris County and every Texas county. Check the date on your notice today. If you got it recently, your clock is already running.
Source (primary): Texas Comptroller: Property Tax Protests and Appeals. Checked Oct 27, 2026.Late protests: the ARB can grant a late hearing only for good cause. Your appraisal district sets the exact mailing date on your notice.
Deadlines can change. Always confirm your deadline with your county appraisal district or assessor before filing.
Appeal results
| Measure (tax year 2025) | Result |
|---|---|
| Residential value cut by appeals (informal + ARB) | 2.7% |
| Commercial value cut by appeals | 5.4% |
| Business property over $5M: rise vs. appeal cut | +7.4% raised, 5.4% cut |
These are total value reductions won through protests, not the share of protests that won. Per-protest win rate: Not published in the sources we checked.
From the appraisal district (primary)
| Measure | Value | Year | Source |
|---|---|---|---|
| Accounts protested | 567,154 | 2025 | primary source, checked 2026-10-27 |
| Average percent value reduction on protested accounts (value reduction; not a win rate) | 7.04% | 2025 | primary source, checked 2026-10-27 |
| Per-protest win rate | Not published | 2025 | primary source, checked 2026-10-27 |
Source check date: Oct 27, 2026. Past results don't guarantee future outcomes.
Don't miss the window in Harris County
Get a free email the moment we confirm the appeal window is open. Missing the deadline usually means waiting until next year; late protests are allowed only in limited cases.
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Get your appeal handledInformation only, not legal or tax advice. Past results don't guarantee future outcomes.