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Chief County Assessment Office 

  • The Chief County Assessment Office is the coordinating arm for all tax assessment activity for Lake County's 280,210 real estate parcels.

  • Oversees the work of local township assessors and acts as a resource to these local offices, yet the township assessor has the primary responsibility for valuing property for assessment purposes.

  • This office is also where the Lake County Board of Review conducts the assessment appeal process, with the CCAO staff serving as the support for the Board’s work.

  •  Determines the equalization factors for each township.

  •  Mails assessment notices to all taxpayers annually.

  •  Processes all homestead exemption applications.

  • Once the Chief County Assessment Office and the Lake County Board of Review have completed their work for a given tax year, the assessment rolls are turned over to the County Clerk's Office for the calculation of the tax rates on each individual parcel.


Find Your PIN

Find Out When Board of Review Findings Will be Mailed for Your Township

Chief County Assessment Officer and Lake County Treasurer answer questions from taxpayers

Example of New Assessment Notice

Chief County Assessment Office Spring/Summer 2009 Newsletter

Special Lake County Edition: Property Taxes

Chief County Assessment Officer Explains Assessments

Tax Assessment ABC's

Budget/Tax Levy Cycle and Assessment/Tax Bill Process

Web Tools for Taxpayers Tutorial Video


Mission Statement
To ensure that the property valuation responsibilities in the property tax cycle are accomplished in an efficient and timely fashion.  In order to meet this end, the CCAO serves as a resource to both taxpayers and the property assessment professionals in Lake County.

Contact Us

Martin P. Paulson
Chief County Assessment Officer 
18 N. County St. - 7th Floor
Waukegan, IL 60085
Office Main Number: 847.377.2050
Email: Assessor@lakecountyil.gov

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