Perry County assessor explains property values, tax bills and parcel lookup
Perry County homeowners can check Form 11, GIS parcel data and county records before they pay or appeal. The assessor's office in Tell City also handles deductions, exemptions and value questions.

A Perry County homeowner can pull up a parcel on the county GIS map before the tax bill arrives and check the lot line, exemptions, and assessed value. The assessor sets the assessment, the treasurer collects the tax, and the state rules that shape both sit behind the process. If a lot line, exemption, or number on the notice looks wrong, the county’s own parcel tools give you a way to catch it before it becomes a larger bill problem.
How the assessment chain works
The Perry County Assessor’s Office makes sure every property in the county is assessed fairly and equitably. Indiana property taxes are then collected by the local county treasurer, based on the assessments provided by the county assessors, under guidelines and regulations set by state legislators and the Indiana Department of Local Government Finance.
The number on your notice is not the same thing as the final tax bill. The state uses the Notice of Assessment of Land and Improvements, known as Form 11, as the formal assessment notice from the county or township assessor, and the assessed value on that form is the starting point for annual property tax payments. Indiana has used a market-based assessment system since 2002, with annual sales trending to estimate value, so a home or parcel can move even when nothing physical changes on the property.
Indiana’s statewide cyclical reassessment now runs on a four-year cycle, with about 25% of parcels in each county reviewed each year. The next statewide cycle begins July 1, 2026, for the 2026 pay-2027 property taxes, which means many owners will see fresh notices or value changes as the county moves through its parcel list.
How to check your own property record before you pay or appeal
If you want to verify your record, start with the parcel itself, not the bill. Perry County places assessment appeals, deduction exemptions, utility and DLGF GIS mapping, a property tax calculator, and a county GIS map in the assessor’s office workflow, which makes it the first stop for most questions about value.
A practical check looks like this:
1. Pull up the county GIS map and find your parcel.
2. Click the parcel, road, waterway, or address point to confirm what the county has tied to your property.
3. Compare the GIS information with your deed, lot description, and Form 11.
4. Review deductions or exemptions that should be on the parcel.
5. Call or visit the assessor’s office if the record does not match what you own.
The county’s public GIS map lets users click parcels, roads, waterways, and address points for detailed information. That is especially helpful when a tax bill changes, a boundary looks off, or a deduction appears to be missing. But the county warns that the GIS data is for reference only, may contain inaccuracies, may change without notice, and should not replace original recorded documents for legal transactions.
GIS can help you spot a wrong address point, a parcel split, or a suspicious boundary line, but a deed, survey, or other recorded document controls when there is a legal question. If your map view and your paper records disagree, the map is a clue, not the final answer.
Where to go in Perry County
The assessor’s office is at 2219 Payne Street in Tell City, IN 47586. Office hours are Monday through Friday, 8 a.m. to 4 p.m. CST, and the phone number is 812-547-5531. Mendy Lassaline is assessor, and she is a Level III assessor serving the Perry Southwest district.
That office is where you can ask about valuation changes, deduction exemptions, and the county’s tax calculator. It is also the place to raise questions about GIS mapping tied to DLGF records. It links the assessment, the parcel map, and the first review of whether the county has the property described correctly.
If a problem persists, the county’s public records request form can help you pull records from the Assessor, Auditor, Recorder, Treasurer, and other offices. That is useful when you need the paper trail behind a parcel history, a change in value, or a boundary question. The treasurer’s office also maintains property assessment statistics, tax districts, deductions, and yearly collections, giving you another layer of local data to compare against what appears on the bill.
What can change the bill
The biggest reason assessed value does not always equal the final bill is Indiana’s property tax cap system. Beginning with 2010 tax bills, property owners have been entitled to circuit breaker credits that limit taxes to 1% of homestead property, 2% of residential property, 2% of long-term care property, 2% of agricultural land, 3% of nonresidential property, and 3% of personal property.
Those caps can soften the impact of a higher assessment, but they do not erase the need to check the record. An error in a parcel description can affect the assessment itself, while a missed deduction or exemption can leave money on the table. A dispute over a boundary or address point can also spill into tax questions if the county is valuing the wrong piece of ground.
The county was organized in 1814 and named for Commodore Oliver Hazard Perry.
This article was produced by Prism’s automated news system from verified source data, official records, and press releases, then run through automated quality and moderation checks before publishing. The system is built and supervised by the people who set the standards it runs under. Read our full AI policy.
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