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Sussex County · Sparta Township, NJSparta Township, NJ property taxes. A steady market. Check the details.
The typical home in Sparta Township was worth about $612,000 in January 2026, up 3.3% 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 Sparta Township home values did
Sparta Township values rose 3.3% in the year to January 2026, reaching a new high. That's in line with Sussex County as a whole (+3.4%).
Since January, values have risen 1.6% through August 2026.
| Month | Typical value | vs. a year earlier |
|---|---|---|
| January 2021 | $423,000 | +11.0% |
| January 2022 | $483,000 | +14.0% |
| January 2023 | $514,000 | +6.5% |
| January 2024 | $554,000 | +7.7% |
| January 2025 | $592,000 | +7.0% |
| January 2026 | $612,000 | +3.3% |
| August 2026 (latest) | $622,000 | +1.6% since January |
January 2026 was the highest month since 2021.
What to check on your notice
The typical Sparta Township home gained 3.3% 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 Sparta Township compares nearby
Among 10 Sussex County places, Sparta Township has the 3rd largest drop from its peak and the 1st highest typical value. Statewide, its 1-year change ranks 208th of 460 New Jersey places, from weakest to strongest.
| Place | January 2026 | 1-year change | vs. peak |
|---|---|---|---|
| Newton | $446,000 | +2.3% | At peak |
| Sparta Township | $612,000 | +3.3% | At peak |
| Sussex | $448,000 | +3.2% | At peak |
| Hopatcong | $453,000 | +7.9% | At peak |
| Hamburg | $395,000 | +4.7% | At peak |
| Stanhope | $440,000 | +3.7% | At peak |
| Franklin | $387,000 | +0.5% | -0.1% |
| Highland Lake | $399,000 | +1.9% | At peak |
| Byram Township | $449,000 | +1.6% | At peak |
| Branchville | $476,000 | +2.4% | At peak |
Deadline and where to file
Sparta Township 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 Sussex County guide covers the full New Jersey appeal process: forms, fees, hearing levels and what happens next.
Building a Sparta Township case
Averages explain why a case might work. The decision turns on evidence about one property. Sparta Township is part of the New York-Newark-Jersey City metro, but your evidence should be local. Sales a few streets away usually beat sales across the metro.
- Look up your town's average ratio and common level range, then compare your assessment to your home's market value to see if you fall outside the range.
Get your Sparta Township 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.