A property-tax appeal wins about 40% of the time — and most county assessors now accept comparable-sales photos through an online portal that takes 20 minutes
When a suburban Cook County, Illinois, homeowner opened his 2025 reassessment notice and saw an 18-percent jump with no changes to the property, he did what a growing number of taxpayers are doing: he logged into the county’s SmartFile portal, uploaded photos and sales data from three nearby houses, and submitted the whole thing in…