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Warren County · Belvidere, NJBelvidere, NJ property taxes. A steady market. Check the details.
The typical home in Belvidere was worth about $389,000 in January 2026, up 2.4% from a year earlier. In a steady market, an appeal works best for specific homes whose assessment ran ahead of what they'd sell for.
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What Belvidere home values did
Belvidere values rose 2.4% in the year to January 2026, reaching a new high. That's in line with Warren County as a whole (+2.2%).
Values have been roughly flat since January, through August 2026.
| Month | Typical value | vs. a year earlier |
|---|---|---|
| January 2021 | $267,000 | +10.4% |
| January 2022 | $304,000 | +13.8% |
| January 2023 | $323,000 | +6.2% |
| January 2024 | $353,000 | +9.5% |
| January 2025 | $380,000 | +7.6% |
| January 2026 | $389,000 | +2.4% |
| August 2026 (latest) | $389,000 | -0.0% since January |
Peak since 2021: $391,000 in October 2025. January 2026 was 0.3% below it.
What to check on your notice
The typical Belvidere home gained 2.4% in the year to January 2026. A notice that rose far more than that, or a value above what similar homes nearby actually sold for, is the usual starting point for an appeal.
How Belvidere compares nearby
Among 5 Warren County places, Belvidere has the 2nd largest drop from its peak and the 4th highest typical value. Statewide, its 1-year change ranks 136th of 460 New Jersey places, from weakest to strongest.
| Place | January 2026 | 1-year change | vs. peak |
|---|---|---|---|
| Phillipsburg | $341,000 | +1.4% | At peak |
| Hackettstown | $467,000 | +2.4% | At peak |
| Belvidere | $389,000 | +2.4% | -0.3% |
| Blairstown Township | $505,000 | +2.1% | At peak |
| Hardwick Township | $505,000 | -0.1% | -1.0% |
Deadline and where to file
Belvidere values are set by the local municipal tax assessor. Your petition must be received (not just postmarked) by the county board of taxation by April 1, or 45 days after the town finishes bulk mailing assessment notices, whichever is later. If the town did a municipal-wide revaluation or reassessment, the deadline is May 1. Burlington, Gloucester and Monmouth counties use January 15 (or 45 days after notices, whichever is later).
Reading this in fall 2026? The 2026 deadlines have passed. If you live in Burlington, Gloucester or Monmouth County, the next deadline is January 15, 2027 (or 45 days after your town's notices, if later), so it is close. Everywhere else, the next deadline is April 1, 2027, or 45 days after your 2027 notice, whichever is later. If your town did a revaluation or reassessment, it is May 1, 2027. Check your notice, because the exact date depends on when the town mailed it.
The Warren County guide covers the full New Jersey appeal process: forms, fees, hearing levels and what happens next.
Building a Belvidere case
The numbers above describe the typical Belvidere home, not yours. Belvidere is part of the Allentown-Bethlehem-Easton metro, but your evidence should be local. Sales a few streets away usually beat sales across the metro.
- Serve copies of the petition and your supporting documents on the municipal assessor and the municipal clerk as the form requires.
Get your Belvidere appeal report
Start with your address. Vulorean checks your assessment against recent comparable sales and builds a value report you can bring to your New Jersey appeal. Eligible reports are free during launch; an account is required and local filing fees are separate.
Check my property and get a report →Vulorean was built for California first. New Jersey forms, deadlines and filing rules vary, so confirm them with your local office before filing. If something in your report looks wrong, email support@vulorean.com and we'll get it fixed.
Home values: Zillow Home Value Index (ZHVI), all homes, mid-tier, smoothed and seasonally adjusted, through August 2026, from Zillow Research. Rules: NJ Division of Taxation, Local Property Tax appeals, NJ Form A-1 Petition of Appeal and instructions (4-25), NJ Courts, Tax Court local property tax. Vulorean is an independent service, not a government office. Confirm dates and forms with your local office.