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Jefferson County · Calcium, NYCalcium, NY property taxes. A flat year. Look closely.
The typical home in Calcium was worth about $210,000 in January 2026, 2.6% less than a year earlier. A notice that went up anyway deserves a second look.
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What Calcium home values did
Calcium values fell 2.6% in the year to January 2026, and sat 2.8% under the August 2024 high. That's weaker than Jefferson County as a whole (+0.3%).
Since January, values have risen 7.6% through August 2026.
| Month | Typical value | vs. a year earlier |
|---|---|---|
| January 2021 | $167,000 | +7.9% |
| January 2022 | $179,000 | +7.1% |
| January 2023 | $195,000 | +9.2% |
| January 2024 | $209,000 | +7.1% |
| January 2025 | $215,000 | +3.0% |
| January 2026 | $210,000 | -2.6% |
| August 2026 (latest) | $225,000 | +7.6% since January |
Peak since 2021: $216,000 in August 2024. January 2026 was 2.8% below it.
What to check on your notice
If your 2026 notice shows a higher value than last year, ask why. The typical Calcium home lost 2.6% over the same stretch. A higher number can still be right for a specific home, for example after a remodel, but the town or city assessor should be able to explain it.
How Calcium compares nearby
Among 10 Jefferson County places, Calcium has the 4th largest drop from its peak and the 7th highest typical value. Statewide, its 1-year change ranks 25th of 595 New York places, from weakest to strongest.
| Place | January 2026 | 1-year change | vs. peak |
|---|---|---|---|
| Carthage | $199,000 | +0.2% | -0.8% |
| Evans Mills | $253,000 | -1.1% | -1.1% |
| Dexter | $234,000 | +0.3% | At peak |
| Adams Center | $224,000 | -3.9% | -4.0% |
| La Fargeville | $195,000 | -4.2% | -4.4% |
| Chaumont | $243,000 | +1.4% | At peak |
| Black River | $240,000 | +1.0% | At peak |
| Glen Park | $169,000 | -5.8% | -5.8% |
| Sackets Harbor | $290,000 | +6.7% | At peak |
| Calcium | $210,000 | -2.6% | -2.8% |
Deadline and where to file
Calcium values are set by the local town or city assessor. Most towns and cities: file Form RP-524 by Grievance Day, usually the fourth Tuesday in May. Exceptions: Suffolk towns meet the third Tuesday in May, Westchester towns the third Tuesday in June, villages that assess typically the third Tuesday in February, and some shared-assessor towns pick a date between the fourth Tuesday in May and the second Tuesday in June. NYC: March 15 for Class 1 homes and March 1 for all other classes. Nassau County: March 1.
Reading this in fall 2026? The 2026 Grievance Day has passed in nearly every community, and the 30-day window to file SCAR after the final roll has too. Your next chance is for the 2027 roll, and it depends on where you live. Based on the usual rules (dates not yet confirmed for 2027), villages that assess may meet around February 16, 2027, NYC and Nassau deadlines are around March 1 (NYC Class 1 around March 15), most towns and cities around May 25, Suffolk towns around May 18, and Westchester towns around June 15. Call your assessor to confirm, because missing Grievance Day forfeits both the board hearing and judicial review for that year.
The Jefferson County guide covers the full New York grievance process: forms, fees, hearing levels and what happens next.
Building a Calcium case
Averages explain why a case might work. The decision turns on evidence about one property. Calcium is part of the Watertown-Fort Drum metro, but your evidence should be local. Sales a few streets away usually beat sales across the metro.
- Use recent sales of comparable homes that sold for less than the assessor's implied market value.
Get your Calcium 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 York grievance. 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 York 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: NY Tax Department: Contesting Your Assessment in New York State, NY Tax Department: Property tax calendar, NY Tax Department: Grievance procedures, NY Tax Department: Contest your assessment. Vulorean is an independent service, not a government office. Confirm dates and forms with your local office.