Property Assessment Information Property Assessment Information
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The Village of Deerfield contracts with Accurate Assessor for property assessment services. If you have any questions on the assessment of your property, please contact them at the information below.
For 2026, the Village of Deerfield is in a Maintenance assessment cycle; this means that the assessed value has been adjusted due to a change in the data on your parcel. This can include, but is not limited to, a building permit, a parcel split, a parcel combination, corrected information, or new information
Property Assessment Information:
For helpful information on property values, assessments, taxation, appeals, and property tax bills please visit the 2026 Guide for Property Owners (included below). To learn more about the appeal process visit Property Tax Common Questions, provided by Wisconsin Dept. of Revenue. The Objection to Real Property Assessment Form is also provided below.
Please note: After the Board of Review has adjourned, property assessments cannot be changed until the following year.
2026 Open Book
Phone Open Book: Phone appointments only.
Thursday, June 25, 2026, 4:00PM - 6:00PM
Appointments available at accurateassessor.com. Click "Open Book Assistant” or call 920-749-8098.
2026 Board of Review
· Deadline to File an Appeal: Tuesday, July 14, 2026, by 4:00PM
· Board of Review Hearing: Thursday, July 16, 2026, 4:00PM - 6:00PM at Deerfield Village Hall, 23 W Nelson St
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