Warren County, New JerseyProperty records & tax offices
Links open the listed public-office or service-provider website in a new tab. This directory does not collect payments.
Find the right property record
Use the property portal for ownership and assessed value, the collector for a bill or balance, and the map for parcel location. Have the address, owner name, or parcel number ready.
Tax bills & filing dates
These are the dates and qualifications recorded in the directory. Confirm your tax year and current deadline with the official office and your property’s notice.
- Payment deadline
- 2026 municipal property taxes are generally collected locally in four installments due February 1, May 1, August 1, and November 1; the municipal tax collector's bill and any statutory grace period control.
- Assessment appeal
- The regular 2026 Petition of Appeal deadline is April 1, 2026; municipalities with a 2026 revaluation or reassessment use May 1, 2026. Warren County published 2026 Tax Board hearing dates of April 28, April 29, and May 5, 2026.
Exemptions & appeals
View exemption application (opens in a new tab)Exemption filing
Local municipal assessor filing rules vary. The New Jersey 2025 PAS-1 combined Senior Freeze/ANCHOR/Stay NJ application deadline is November 2, 2026.
Senior relief
New Jersey PAS-1 combines Senior Freeze, ANCHOR, and Stay NJ. Eligible seniors or disabled persons may qualify for Senior Freeze reimbursement, ANCHOR, and Stay NJ; the 2025 application deadline is November 2, 2026, subject to current income, residency, and eligibility rules.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.