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Understanding Property Taxes

Who's who in the Cook County property tax system? To learn the ins and outs of the taxation process, click here.

A Guide To Taxpayer Exemptions

To learn how taxpayer exemptions save you money, click here.

House Assessor

Senior Tax
Deferral Program 

Qualifying seniors can defer payment of their property taxes until their homes are sold.  To learn how, click here.

Assessor's Office

What We Do

In a Nutshell:  Your New Trier Township Assessor's Office advocates for you with the Cook County Assessor's Office and the Cook County Board of Review.  Additionally, we provide a board range of services acting as a liason for you with various County agencies.

Available Services

  • Assistance with preparing appeals for the Cook County Assessor, the Assessor's Re-Review and the Cook County Board of Review (and Re-Review)
    • We provide information about the various grounds for appeal
    • We file appeals for you at your request
  • Assistance with preparing appeals for the Property Tax Appeal Board ("PTAB")
  • Assistance with filing exemptions
  • Assistance with the Cook County Treasurer's Office
    • Obtaining refunds
    • Updating name and address information
    • Providing documentation to correct 2nd installment Tax bills that are missing valid exemptions
  • Sales and building permit information
  • Taxpayer of record information
  • Brief legal descriptions of a specific property
  • Information from the Plat Books ("Sidwell Maps")
  • Information from tax exempt properties
  • Tax rate information

We are also available to do outreach events for your organization.  We have a presentation we call "Your Annual Tax Calendar at a Glance," but will gladly tailor a presentation for your organization.

The Cook County Assessor's office does ALL assessing in Cook County on a Triennial basis.

The Cook County Treasurer's office prepares ALL tax bills and collects ALL taxes.  Taxes are collected in arrears; tax bills are issued in February and July (subject to adjustments for unforeseen events).

You can reach the New Trier Assessor's office at (847) 446-8200.  Deputy Assessor Leonard Shifflet and I look forward to serving you.


Jan Churchwell

New Trier Township Assessor





Latest News

Your Cook County Property Tax Bill Is Available Online
Cook County Treasurer, Maria Pappas, announced today that the second installment property tax bills are available on line at...
Read More
County Assessor’s Office Issues “CORRECTED” Notices for 389 Township Properties
The Cook County Assessor recently announced that he was re-setting the 2017 Assessed Value for 389 homes in New Trier Township and thereby...
Read More

Contact Information

Jan Churchwell Headshot

Assessor Jan Churchwell

Phone: 847-446-8200
Fax: 847-446-1743
Hours: Monday - Friday: 9:00 a.m. - 5:00 p.m.
Directions to our office.


Additional Resources

Cook County Assessor
(with links to downloadable forms) 
Chicago (312) 603-5300
Skokie (847) 470-7237

Cook County Treasurer
Chicago (312) 603-6202

Cook County Board of Review
Chicago (312) 603-5542

Cook County Recorder of Deeds
Chicago (312) 603 5050

Cook County Clerk
Chicago (312) 603-5656 

Cook County Property Tax Portal



739 Elm Street, Winnetka, Illinois 60093 P. 847-446-8202 F. 847-446-1743
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