Cook County Assessor's Office
John McDonnell currently serves as the Director of Multifamily Development at Cook County Assessor's Office since March 2023. Prior to this role, John worked as a Real Estate and Policy Analyst at Cook County Government since September 2004. John holds a Bachelor of Arts (B.A.) degree in Economics from DePaul University.
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Cook County Assessor's Office
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The Assessor's Office is responsible for setting fair and accurate values for 1.8 million parcels of Cook County property. The value of these properties is not determined on an individual basis, but rather by a mass appraisal system. The mass appraisal system is a way to put fairness into the entire assessment process.