cook county assessor

The Cook County Assessor's Office is responsible for delivering accurate and transparent assessments of all residential and commercial properties in Cook County, Illinois. It manages valuations for over 1.8 million parcels of property using a mass appraisal system, which applies local market trends and property characteristics to estimate fair market values in order to ensure fairness in the property tax system. The office is governed by state and county laws and provides various taxpayer assistance and exemption programs, including those for veterans, seniors, disabled persons, and long-time occupants. It also handles appeals, certificates of error, and corrections related to property assessments. The main office is located at 118 N. Clark Street, Chicago, with additional offices in Markham and Skokie. Its regular hours are Monday through Friday, typically from 8:30 AM to 5:00 PM.