Assessor's Office

2021 Open Book: Monday, Monday, April 19, 2021 through Friday, April 30, 2021
2021 Board of Review: Monday, May 10, 2021 at 9:00a in the Council Chambers

Notices of changed assessments will be mailed out on Friday, April 16, 2021.  Only those real estate properties that changed in value will receive a notice of changed assessment.  You can view your 2021 property value on the Interim Assessment Roll.  If you do not agree with the value of your property you can view the information on appealing your assessment with the Board of Review.

If you would like to have the Assessor’s Office review your assessment for 2021, you can provide information (appraisal, market analysis, listing contract, comparable sales or assessments, repair estimates) to our office by mail to the Assessor’s Office, 201 Delafield St., Rm. 350, Waukesha WI 53188 or by email to

The Assessor’s Office does not levy taxes.  Any questions about taxes should be made to the appropriate taxing authorities. 

Assessments, property information and sales information are available in the Assessor’s Office and online. The assessment roll is available in the Assessor's Office and online. 

The appeal process is explained in the “Property Assessment Appeal Guide for Wisconsin Real Property Owners.”  If you would like a copy, property tax publications can be found at the following Web address: or by contacting the Department of Revenue, Assessment Practices, Box 8971, Madison, WI 53708-8971.

Wisconsin State Statute 70.32 states, "Real Property shall be valued by the assessor in the manner specified in the Wisconsin property assessment manual provided under Section 73.03(2a) from actual view or from the best information that the assessor can practicably obtain, at the full value which could ordinarily be obtained therefore at private sale".


The mission of the Assessor's Office is to prepare the annual assessment roll while providing the best possible service.

Values and History

Assessed values determine the amount of general property tax charged to each property owner, while the information gathered provides a historical record and reference base for municipal operations.

General Information

Read more about the functions of this office by accessing the Assessor's Office General Information (PDF) document.