To get to the app begin by going to Washington County WI website. Hover over Departments and select Register of Deeds, then select Real Property Lister Office. Select "New" Residential Comparable Sales Finder. Click on Comparable Residential Sales link. Or just use this link.
Next you add the street address and city you are interested in and select miles around the area. Click on any image of a home and there you have it. Amazing.