Assessor

Assessor

The Assessor is charged with several administrative and statutory duties. The primary duty and responsibility is to value & classify all real property within the Assessor's jurisdiction except that which is otherwise provided by law. This would include residential, commercial, industrial, and agricultural classes of property.

DOES THE ASSESSOR HANDLE TAXES?

It’s a common misperception that the Assessor determines tax rates, calculates taxes, and/or collects taxes. But the Assessor solely focuses on property value. Taxing bodies such as schools, cities, townships, etc., adopt budgets that determine the tax rate needed to meet these overall budgets. Your taxes are in proportion to the value of your property compared to the total value of the taxing district where your property is located. 

ANNOUNCEMENT

FALL 2026 PROPERTY REVIEW FOR THE 2027 ASSESSMENT

The Winnebago County Assessor’s Office will be conducting property reviews throughout the county during the fall of 2026.

In urban areas, properties with permitted work will be reviewed to determine the status and completion of the work. In rural areas, properties will be reviewed to identify any recent changes or improvements that may have occurred.

Typically, two Assessor’s Office staff members will be conducting these reviews. Staff may take notes, review property and plot information, and take photographs as part of the review process.

Staff will be traveling in a gray 2016 Ford F-150 crew cab with decals on the doors identifying the vehicle as belonging to the Winnebago County Assessor’s Office.

If additional information is needed regarding new construction, improvements, or demolition, the Assessor’s Office may mail a form to the property owner requesting additional details.

Property owners are also encouraged to let us know about any changes to their property. You may contact the Winnebago County Assessor’s Office directly or submit an online data correction form located on your parcel report page on the Beacon website.

Property information can be viewed by clicking the blue Property Search (Beacon) button above.

Any updates or changes identified during this review process will be reflected in the 2027 assessment. If your 2027 assessed value changes from your 2026 assessed value, you will receive a notice of assessment by mail, postmarked by April 1, 2027.

Thank you in advance for your cooperation!

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