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Adams County · Decatur, INDecatur, IN property taxes. Values jumped. Make sure yours is right.
The typical home in Decatur was worth about $229,000 in January 2026, up 6.1% in a year. When values move this fast, assessments can overshoot individual homes, especially ones that need work.
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What Decatur home values did
Decatur values rose 6.1% in the year to January 2026, reaching a new high. That's in line with Adams County as a whole (+6.8%).
Since January, values have risen 3.8% through August 2026.
| Month | Typical value | vs. a year earlier |
|---|---|---|
| January 2021 | $151,000 | +8.1% |
| January 2022 | $169,000 | +11.6% |
| January 2023 | $185,000 | +9.9% |
| January 2024 | $200,000 | +8.1% |
| January 2025 | $216,000 | +7.8% |
| January 2026 | $229,000 | +6.1% |
| August 2026 (latest) | $238,000 | +3.8% since January |
January 2026 was the highest month since 2021.
What to check on your notice
The typical Decatur home gained 6.1% 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 Decatur compares nearby
Among 4 Adams County places, Decatur has the 1st largest drop from its peak and the 4th highest typical value. Statewide, its 1-year change ranks 485th of 596 Indiana places, from weakest to strongest.
| Place | January 2026 | 1-year change | vs. peak |
|---|---|---|---|
| Decatur | $229,000 | +6.1% | At peak |
| Berne | $250,000 | +7.5% | At peak |
| Geneva | $267,000 | +9.9% | At peak |
| Monroe | $340,000 | +7.0% | At peak |
Deadline and where to file
Decatur values are set by the local county or township assessor. File Form 130 with your assessor by June 15 of the assessment year if your Form 11 was mailed before May 1. If the Form 11 was mailed on or after May 1, the deadline is June 15 of the year the tax statements are mailed.
Reading this in fall 2026? The June 15, 2026 deadline for the January 1, 2026 assessment has passed. Your next regular chance is the January 1, 2027 assessment: if your Form 11 is mailed before May 1, 2027, file by June 15, 2027. If it is mailed on or after May 1, 2027, the deadline is June 15, 2028. A limited appeal to fix specific errors (wrong person, missed deduction or tax cap, math or clerical mistake) can still be filed up to 3 years after the taxes were first due.
The Adams County guide covers the full Indiana appeal process: forms, fees, hearing levels and what happens next.
Building a Decatur case
The numbers above describe the typical Decatur home, not yours. Decatur is part of the Decatur metro, but your evidence should be local. Sales a few streets away usually beat sales across the metro.
- Check the property record card for errors in square footage, grade, condition, or bedroom and bath counts.
Get your Decatur appeal report
Start with your address. Vulorean checks your assessment against recent comparable sales and builds a value report you can bring to your Indiana 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. Indiana 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: Form 130, Taxpayer's Notice to Initiate an Appeal (State Form 53958 R9 4-26), Indiana Board of Tax Review: Appeal Process Overview (Sept 2026), Indiana Board of Tax Review: Taxpayer's Guide to Filing a Petition, DLGF Fact Sheet: Circuit Breaker Caps. Vulorean is an independent service, not a government office. Confirm dates and forms with your local office.