Frequently-Asked Questions

1. What is the process of filing a Complaint?
2. What is a Parcel ID Number (aka "PIN")?
3. I don't know my property's Parcel ID Number. How can I find out what my property's Parcel ID Number is?
4. What is an Assessment?
5. What can I do if I don’t agree with my Assessment?
6. What is "BOR" and what do they do?
7. How do I submit an Assessment Complaint?
8. When can I submit my Assessment Complaint?
9. Who is the Supervisor of Assessments for Will County?
10. How can I contact the Will County SOA Office if I have questions?
11. Where is the Will County SOA Office located?
12. Do I need to create an account on this website in order to file a Complaint?
13. I have an account, but I forgot my Password. What should I do?
14. I want to submit a Multi-Parcel Complaint that has properties that are in different townships. How can I do that?
15. I received a notice saying that my complaint submission was not accepted. Why wasn't it accepted? What can I do to resolve this issue?

For more information on property assessments and the tax process, read our FAQ page on the Will County Supervisor of Assessments main website (www.willcountysoa.com).

1)  What is the process of filing a Complaint?

Will County's Guide to Filing a Complaint  pdf brochure details the step-by-step process of filing a property assessment complaint.

2)  What is a Parcel ID Number (aka "PIN")?

A Parcel ID Number is the identification code assigned to a property. Every property has its own unique Parcel ID Number. Parcel ID Numbers are used for record keeping and tax purposes in a county or geographic region. Some other names for Parcel ID Number are: "Parcel Number", " Property Index Number ", and "PIN".

3)  I don't know my property's Parcel ID Number. How can I find out what my property's Parcel ID Number is?

If you don't know your property's Parcel ID Number (aka "PIN"), you can look it up by using the Property Search Portal on Will County Supervisor of Assessments main website (www.willcountysoa.com). The Will County SOA Property Search Portal allows you to look up property in Will County by address, owner name, subdivision, sale date and/or amount, or PIN. Your Parcel ID Number (aka "PIN") can also be found on your tax bill and other such documents.

4)  What is an Assessment?

An assessment is the property value that is officially entered in the county assessment books (sometimes called the "tax roll"). This value is used to determine what portion of the total tax burden each property owner will bear. Your Assessed Value is 33.33% of the Fair Market Value of your property. Remember, Will County uses a three-year study to determine assessments; therefore, we are always a year behind. For example, 2026 assessments are based off of sales data from 2023, 2024, and 2025.

5)  What can I do if I don't agree with my Assessment?

It is strongly recommended that you discuss your assessment with your local Township Assessor before you file a complaint at the County level. If you would still like to file a complaint after speaking with your local Township Assessor, you may file a complaint with the Will County Board of Review. Residential, Farm, Commercial, and Industrial complaint forms are available to download in PDF format.

6)  What is "BOR" and what do they do?

BOR stands for "Board of Review". The Board of Review prides itself on assisting property owners with the Board of Review complaint process as well as the State complaint process. The Board of Review also approves Senior Assessment Freeze Exemptions and refers Tax Exemptions to the Illinois Department of Revenue. Complaints are processed, scheduled for hearing, reviewed and the final decisions are entered into the computer, then mailed to all complainants. The Board of Review considers all evidence presented before them to arrive at a fair and equitable assessed value within the guidelines of state statute. To find out more about the duties of the Board of Review, view the Board of Review Duties page.

7)  How do I submit my Assessment Complaint?

There are two ways to submit your complaint:

    1) Electronic Submission: You may submit your complaint via the web on this website. Simply Register a new User Account, then upload your complaint on the Submit Complaint page.

       ~ OR ~

    2) Submit Complaint by Mail: Send your complaint to the Will County Supervisor of Assessments Office via postal mail. Our mailing address is the same as our office address:
                                                                                              Will County Office Building
                                                                                  ATTN: Supervisor of Assessments Office
                                                                                                  302 N. Chicago Street
                                                                                                        Second Floor
                                                                                                      Joliet, IL  60432

8)  When can I submit my Assessment Complaint?

The Board of Review will be accepting 2026 complaint submissions from Wednesday, August 12, 2026 through Monday, September 14, 2026. Complaint Forms can either be obtained at the Will County Supervisor of Assessments Office, or you can visit our Downloads  page.

9)  Who is the Supervisor of Assessments for Will County, Illinois?

The Will County Supervisor of Assessments is Dale D. Butalla, CIAO-M.

10)  Where is the Will County SOA Office located?

The Will County SOA Office is located on the second floor of the Will County Office Building. The building address is the same as our mailing address:

                                                                                              Will County Office Building
                                                                                 ATTN: Supervisor of Assessments Office
                                                                                                  302 N. Chicago Street
                                                                                                        Second Floor
                                                                                                      Joliet, IL  60432

11)  How can I contact the Will County SOA Office if I have questions?

You can call the Will County Supervisor of Assessments Office at (815) 740-4707 or you can send us a message using our Web Contact Form.The Will County Supervisor of Assessments Office's hours of operatation are from 8:30 AM to 4:30 PM, Monday through Friday. The Will County SOA Office is closed on weekends and holidays.

12)  Do I need to create an account on this website in order to file a Complaint?

In order to submit your complaint electronically using this website, you must create a user account. Otherwise, you can send your complaint to our office via postal mail or walk into our office and submit your complaint during our hours of operation.

13)  I have an account, but I forgot my Password. What should I do?

If you provided your e-mail address when you registered your account, you can use the Password Recovery feature. If you have forgotten your password and did not save an e-mail address to your account, you can call the Will County SOA Office at (815) 740-4707 to discuss options.

14)  I want to submit a Multi-Parcel Complaint that includes properties that are in different Townships. How can I do that?

If you want to submit a Complaint that has multiple Parcel ID numbers that span multiple Townships, you have two options:

1) You can file separate Complaints for the properties in each Township.

       ~ OR ~

2) You can contact The Will County Supervisor of Assessments Office and they will file your cross-township complaint for you.
    You can call The Will County SOA Office at (815) 740-4707 or you can send our office a message using the Web Contact Form.

15)  I received a notice saying that my complaint submission was not accepted. Why wasn't it accepted? What can I do to resolve this issue?

Visit our Resolving Insufficient or Incomplete Complaint Submissions page which includes detailed explanations of the various reasons for which a complaint submission would not be accepted. The page also details what must done in order to resolve each one of those issues.

For Incomplete submissions, any required Compliance documentation must either be submitted electronically using the "Submit Compliance Documents" option on the "View Complaint" page of this website, OR mailed to the Will County Supervisor of Assessments Office within ten (10) business days of the date on the Incomplete Submission Notice. Failure to comply with this request within that time frame will result in the dismissal of the complaint submission.

This year's deadline to submit Board of Review complaints is Monday, September 14, 2026. If you have any further questions regarding your submission, please call the Will County Supervisor of Assessments Office at (815) 740-4707.