Cook County Assessor's Office

External website

Social good organization: Other

Cook County contains 1.8 mln residential and commercial real estate properties. The Cook County Assessor’s Office estimates the market value of each of these properties once every three years. These market values determine the distribution of property tax burden across taxpayers. The process of estimating property values depends intensively on data and statistical processes.

Organization's projects

Project name Summary Status Social impact area
PINVAL (PIN Valuation) Interactive web application that produces a customized valuation report for an individual real estate property. done_all Completed Other
Organization's details

Years in operation: 25 or more years

Yearly budget: $20MM-$50MM

Geographical scope: City/Local


118 N. Clark St.


Chicago, IL 60602

United States of America

Contact information

Phone number: (312) 443-7550

Email address: