Naperville Township


Assessor's Office

Welcome to the official Naperville Township Assessor's Office website! The Naperville Township Assessor's Office is charged with providing a fair and equitable appraisal of all the properties within their jurisdiction for tax purposes.

Assessor | Matthew Rasche

2022 Assessment Publication

As of Friday, September 16th, the 2022 Naperville Township Assessments have been published and are available for review. Taxpayers have through Monday, October 17th, 2022 to file a formal appeal of their assessment with the DuPage County Board of Review.

If, upon reviewing your assessment, you believe that the value of your property is less than the implied market value of your assessment, we encourage you to submit an informal review below prior to filing a formal appeal with the DuPage County Board of Review.

Parcel Search

Locate your property to find your 2022 assessed value

Informal Review

Fill out a form to have the Naperville Township Assessor's Office review your property

Formal Appeal

File a formal appeal with the DuPage County Board of Review

More Info

Read more information on the property review and appeal process

This informal review will give our office an opportunity to review the information you have provided and address your concerns to the best of our ability. It also gives our office an opportunity to ensure that our records of your property are correct and complete. If you are not satisfied with the outcome of this informal review you are encouraged to file a formal appeal with the DuPage County Board of Review.

Please note that filing an informal review DOES NOT limit your ability to file a formal appeal with the DuPage County Board of Review on or before Monday, October 17, 2022.

Informal Review | Naperville Township Assessor's Office

Deadline: Friday, October 7th, 2022

630 355 2444
[email protected]

Formal Appeal | DuPage County Board of Review

Deadline: Monday, October 17th, 2022

630 407 5858
DuPage County Board of Review Webpage

Meet the Assessor

Matthew Rasche

Assessor (2022 - Present)

Coming soon!

[email protected]

Responsibilities of the Assessor

Appraisal of Township properties

To assess means to determine the value of something. The Township Assessor is an elected official who determines the value of property for tax purposes. The Assessor does not estimate or compute the Real Estate Taxes, does not send out Tax Bills, and does not collect Property Taxes. The Assessor is responsible for the fair and equitable appraisal of every parcel of property in his or her jurisdiction.

The Township Assessor keeps Property Record Cards which contain all the pertinent information about each parcel. The information includes the following: a brief legal description, land size, dimensions of all buildings, building type, and quality of materials used in construction of the structure. Most of this information is gathered when the property improvement is first built, and then updated afterward through periodic field inspections. Property Record Cards are available for inspection through our website.

The Township Assessor also receives Real Estate Transfer documents for properties that have sold in the Township. This sales information, along with other facts and figures about housing conditions, goes into the valuation process. The Assessor estimates how much a property would sell for on the open market.

Market Value, as used in the appraisal of real estate, is defined by the Appraisal Institute as:

The most probable price, as of a specified date, in cash or in terms equivalent to cash, or in other precisely revealed terms, for which the specified property rights should sell after reasonable exposure in a competitive market under all conditions requisite to a fair sale, with the buyer and seller each acting prudently, knowledgeably, for self interest, and assuming that neither is under duress.

The basis for all assessments and reassessments is Market Value (occasionally the terms "full value" or "fair cash value" are used. According to Illinois State law, all property in Illinois (except Cook County) should be assessed at 33.33%, or one-third of Market Value. This is known as the Level of Assessment. For example, if a home could be sold for $330,000, the Assessed Valuation would be approximately $110,000 ($330,000 x .3333). Once the Market Value of a property is determined, the Township Assessor places the value of the property at the required percentage which results in the Assessed Valuation.



Amount of parcels within Naperville Township of DuPage County

Assessed Valuation

4.8 Billion

Naperville Township's assessed value of 4.8 billion is equal to 14.4 billion in market value



The Naperville Township governmental body has been in operation since the mid-1800s

Mission Statement

Naperville Township, in partnership with the greater Aurora, Naperville & Warrenville communities, and through the efforts of dedicated employees and elected officials, will provide township services in an efficient and effective manner in order to preserve and enhance the quality of life for all our residents. We are committed to listening to and evaluating the needs of the public and shall provide services, which are responsive to the health, safety and general welfare of the entire township.

Where Do Property Taxes Go?

Local taxing districts

Your annual property taxes are made up of levies from the individual taxing bodies that service your area. Each taxing body determines how much money is needed to operate for the upcoming year, and how much needs to be raised through property taxes. The amount to be raised is the levy. The levy is sent to the County Clerk where the tax rate is calculated by dividing the total amount of assessed value in the jurisdiction by the levy. The following charts display the breakdown for a typical home in Aurora within School District 204, and one for a home in Naperville within School District 203 boundaries.

Your tax bill will list all the Taxing Districts that you are paying taxes to.

Typical Aurora Home of $300,000 (market value) - Dollar Amounts Paid to Taxing Bodies

Typical Aurora Home of $300,000 (market value) - Percentages of Tax Bill Paid to Taxing Bodies

Typical Naperville Home of $300,000 (market value) - Dollar Amounts Paid to Taxing Bodies

Typical Naperville Home of $300,000 (market value) - Percentages of Tax Bill Paid to Taxing Bodies