Lewis County Property Tax Appeal Guide
In Lewis County, file your appeal by February 20, 2026 at Lewis County Assessor's online portal.
| Deadline | The county commission sits as the Board of Equalization and Review, convening no later than February 1 of the tax year and adjourning sine die no later than the last day of February (it may adjourn after February 15 if its work is complete). A property owner must apply to the board for relief during this session; the operative filing deadline observed by county assessors is February 20. A taxpayer who fails to apply during the board's session waives the right to correction of the assessment for the current year. |
|---|---|
| Lien date | July 1, 2025 |
| Appeal body | Board of Equalization and Review (BOER) |
| Assessor / district | Lewis County Assessor |
| Online portal | File online |
How to File a Appeal in Lewis County
- Gather your assessment notice — it lists your account number and any access code
- File online through Lewis County Assessor's portal or by mail
- State your grounds and submit evidence (comparable sales, a licensed appraisal, or photos of defects)
- Request an informal review to try to settle before a formal BOER hearing