Warren County Property Tax Appeal Guide
In Warren County, file your appeal by April 1, 2026 at Warren County Board of Taxation's online portal.
| Deadline | April 1 of the tax year (received, not postmarked), OR 45 days from the date the bulk mailing of Notification of Assessment is completed in the taxing district, whichever is later. May 1 in any municipality that has implemented a municipal-wide revaluation or reassessment. (Burlington, Gloucester, and Monmouth Counties follow an alternate assessment calendar with a January 15 deadline.) |
|---|---|
| Lien date | October 1, 2025 |
| Appeal body | County Board of Taxation (County Board) |
| Assessor / district | Warren County Board of Taxation |
| Online portal | File online |
How to File a Appeal in Warren County
- Gather your assessment notice — it lists your account number and any access code
- File online through Warren County Board of Taxation'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 County Board hearing