Assessor's Office


Board of Review Appeal Window –It’s Time To File

Last Day to File is DECEMBER 1, 2020

The Cook County Board of Review has rescheduled the appeal window for New Trier Township to end on December 1, 2020. Supplemental evidence will be due no later than December 15, 2020.  Property owners who wish to file an appeal should do so now.

The Board of Review encourages online filing at:

We've prepared a 2020 Guide to Filing An Online Appeal for your convenience.

If you wish to file using the paper form then go to  click on “Forms” and then “Complaint.” The BOR’s postal mailing address is on the form.  The New Trier Township Assessor’s Office can also mail the paper form to you, please call or email to request the paper version.

Please see our handy 2020 Guide To Filing A Paper Appeal, posted here. Just click the link above to download.

Due to the pandemic, the township offices remain closed to the public, but Assessor Jan Churchwell and Deputy Assessor Leonard Shifflett are available by phone and email. Phone (847) 446 -8200 or email or

Keep Up To Date Via The Dispatch eNewsletter

Every other Friday your township publishes a free electronic newsletter. Receive breaking Assessor news and information about events and learning opportunities. Simply visit our newsletter sign-up, provide your email and we do the rest.


Second Installment tax bills for 2019 have been posted to  Thanks to the efforts of Cook County Treasurer Maria Pappas, you can now see how much is owed on your tax bill two weeks before the bill is received in the mail in early July.  Please note that while the Second Installment tax bills are due August 3, 2020, property owners can pay those bills without interest charge through October 1, 2020, thanks to an ordinance passed by the Cook County Board of Commissioners.

To  download a copy of your tax bill or to make payment, go to

  • Select the blue box labeled “Pay Online for Free"
  • Search by property address or enter your Property Index Number (PIN)
  • If you pay online there is no fee if you pay from your bank account.

The printed tax bills, with a due date of August 3, will be mailed by the beginning of  July.  Payments after October 1, 2020 will be charged 1.5 percent per month, as required by law.  In addition to paying online, you can pay by mail using the payment coupon that comes with the printed tax bill, or you can pay at Chase Bank branches that are open and have tellers on the premises.  Remember to always write your PIN and tax year on each check submitted in payment of your real estate taxes.

Should you need assistance in obtained a copy of your tax bill, if your tax bill is missing exemptions to which you are entitled, or if you have questions regarding your bill, please contact either me or Deputy Assessor Len Shifflett by telephone: 847-446-8200, or by email to or  Currently, our offices remain closed to the public due to COVID-19.

Also, if you are not registered to receive “News” alerts and “Calendar” updates from the Township Assessor’s office, go back to the homepage, click on “Notify Me” and sign up.  Many important real estate tax dates, such as times to appeal, change from year to year.  If you are signed up online with our office, you will be notified of these important dates.

Jan Churchwell, New Trier Township Assessor



Commencing Tuesday, March 17 the New Trier Assessor’s officewill be closed to the public. During that period we will be taking calls during regular business hours at 847-446-8200.  You can always reach us via email:  jchurchwell@newtriertownship.comand  

Stay well,

Jan Churchwell

New Trier Township Assessor

2020 Real Estate Assessment Appeals

            Presently, the “window” to appeal your property’s 2020 assessed value with the Cook County Assessor will begin March 5 and will end on and including May 1, 2020. Check carefully any notice you may  receive to make sure it states the Assessed Value that you expect for your property. Any reductions you received from appeals you made in 2019 will be in effect through 2021 (subject to further reductions from subsequent appeals).  You may file your appeal in writing using the Assessor’s form or online using the Assessor’s portal.  Both the printed form and the online portal  can be accessed on the Assessor’s website (

            If you would like assistance in  filing your appeal such as information about comparable properties or recent  sales, we can help you.  The New Trier Township Assessor’s office is located at 739 Elm Street, Winnetka.  Our office hours are 9:00 a.m. to 12:30 p.m.  and 1:30 p.m. to 5:00 p.m. The office phone number is 847-446-8200. My email is, and Deputy Assessor Len Shifflett’s email is

Jan Churchwell

NewTrier Township Assessor

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 broad range of services acting as a liaison 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 where applicable
    • Updating name and address information
    • Providing documentation to correct second 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

Outreach Events

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.

Cook County

Understanding Property Taxes

Who's who in the Cook County property tax system? Learn the ins and outs of the taxation process (PDF).

Contact Us

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

- Jan Churchwell, New Trier Township Assessor

Additional Resources