Assessing 

Our Mission

To assess taxable residential and commercial real and personal property fairly and accurately in accordance with Wisconsin State Statutes and the Wisconsin Property Assessment Manual; the Wisconsin Department of Revenue (DOR) assesses all manufacturing real and personal property.  It is our duty to be ambassadors of the City; we will treat everyone we encounter with courtesy and respect.  Furthermore, it is our responsibility to provide valuable, responsive, and cost-effective services to the citizens of Sun Prairie.

For Assessing dates and deadlines click here. 

2026 Assessment Roll

  1. 2026 Real Estate Assessment Roll

Get Detailed Property Information

To access detailed building data, a property sketch, permit information, and sales information on a property:

  • Click here. 
  • Enter your address and search
  • Select your property and click "View detail"
  • Click "View full report"
  • When report is ready, click on the link above the house

2026 Revaluation - Webpage Photo

2026 Revaluation

2026 will be a revaluation year for all properties in the City of Sun Prairie and the Assessors Office will be changing all assessments to reflect market value on all properties as of January 1.

We anticipate  the 2026 values to be sent out in late July. Please note that increasing the assessed values does not mean everyone will have higher taxes. 

LEARN MORE (1)

Residential Sales (2024 - 2026)

Helpful Resources

 

Neighborhood Area Map (PDF): Map depicts single family residential neighborhood groups.

Find you Neighborhood or Parcel Number: Click on this link to open a simple web application. Zoom in to your parcel and click.  Your Neighborhood and Parcel Number will appear. 

AccessDane Dane County Property Information Site - Current and historical assessment information

Publications & Links

Publications are available at the City of Sun Prairie Assessor's Office, the public library, or online: