Use the Online Property Search Database (eGov) and Interactive GIS Web Mapping Service to view property data for all properties in the City of Janesville.

City of Janesville Assessment Rolls:

• 2025 Real Estate Assessment Roll
• 2023 Personal Property Assessment Roll
• 2025 Exempt Real Estate Assessment Roll

City of Janesville Sales Data:

• 2024 Residential Valid Sales PDF
• 2024 Commercial Valid Sales PDF
• All 2024 Valid Sales Data Excel version

City of Janesville Maps:

• Commercial Neighborhood Map
• Single Family Residential Neighborhood Map
• Residential Neighborhood Map

Informational Videos, Slides and Documents:

• 2023 Citywide Revaluation Presentation
• 2023 Citywide Revaluation Presentation Video
• WI Taxpayer Alliance articles - PDF document titled "Revaluation Articles" from the non-partisan Wisconsin Taxpayer Alliance organization that provides information about the revaluation process
• Assessment Process Informational Video
• My Neighbors House
• Tax Bill Before and After Reval Assessment Change
• Property Assessments and Your Taxes
• Revaluation Income & Expense (I&E) Cover Letter Example
• General Commercial I&E Form 2024
• Multifamily I&E Form 2024

Helpful Links:

• Wisconsin Department of Revenue
• Wisconsin Department of Revenue Government Publications
• Wisconsin Property Assessment Manual
• Property Assessment Process Guide for Municipal Officials pb062
• WI DOR Agent Authorization PA-105
• Wisconsin Department of Revenue Guide for Property Owners
• Agricultural Assessment Guide for Wisconsin Property Owners pb061
• Tax 18 Conservation Programs
• 2025 Law Changes

Wisconsin Dark Store Loophole Information:

• Wisconsin League of Municipalities Dark Store Information
• Wisconsin League of Municipalities Dark Store Whiteboard Video
• Wisconsin League of Municipalities Additional Dark Store Information
• Wisconsin Eye Morning Minute: Wisconsin League of Municipalities Dark Store Loophole Discussion

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