SearchSystems Editorial

Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site between September 23, 2026 and September 28, 2026.

About this guide

DuPage County, Illinois, has about 937,000 residents (2024 Census Bureau estimate). The title to a parcel in DuPage County is in the deed records of the County Recorder and its taxable value is set by the Supervisor of Assessments; what is built on it is a matter for the city or the county. This guide says who keeps each record and where the page for each office is.

This guide covers deeds, assessed values, directory links, city permits, evictions and court cases, records requests and common questions.

Related guides: DuPage County public records, DuPage County arrest records, DuPage County warrants, DuPage County inmate search, DuPage County criminal records, Illinois arrest records and Illinois inmate search.

Deeds, Mortgages and Liens in DuPage County

Deeds, mortgages, liens and easements that affect title to land in DuPage County are recorded by the County Recorder, which indexes them by name and sells copies.

SearchSystems opened and checked the County Recorder's page at dupagecounty.gov/elected_officials/recorder (page title: Recorder | DuPage Co, IL), phone 630-407-5400, 421 N County Farm Rd, Wheaton, IL 60187, which answered when SearchSystems opened it on September 23, 2026.

Assessed Values and the Tax Roll in DuPage County

The Supervisor of Assessments sets the value each parcel in DuPage County is taxed on and keeps the parcel maps. Illinois assesses property at a third of market value; Cook County reassesses one third of the county each year and the rest of the state runs on four-year cycles.

SearchSystems opened and checked the Supervisor of Assessments' page at dupagecounty.gov/government/departments/supervisor_of_assessments (page title: Supervisor Of Assessments | DuPage Co, IL), phone 630-407-5858, which answered when SearchSystems opened it on September 23, 2026.

More Official Property and Land Records Pages for DuPage County

The SearchSystems directory, online since 1997, lists the official pages for DuPage County and Illinois. These property pages from its DuPage County listing were opened again on October 2, 2026 and each one still answers:

Permits and City Records in the Cities of DuPage County

Building permits, zoning and code cases inside a city are the city's own records. The cities in DuPage County with a SearchSystems guide to their offices, the largest twelve first, with the city page SearchSystems verified:

The rest: Hinsdale, Warrenville, Wood Dale, Burr Ridge, Itasca, Willowbrook and Clarendon Hills.

Evictions and Court Cases About Land in DuPage County

An eviction, a foreclosure, a lien dispute or a quiet title suit is a court case in the Circuit Court of DuPage County, and the file is public unless sealed.

The court records page SearchSystems verified for the county is at dupagecircuitclerk.gov.

Asking a County Office for a Record

Under the Illinois Freedom of Information Act a county office must answer a request within 5 business days, with one 5-day extension, and it may charge copying only after the first 50 pages.

Frequently Asked Questions

Who records deeds in DuPage County?

The County Recorder, at dupagecounty.gov/elected_officials/recorder, phone 630-407-5400. Deeds, mortgages and liens on land in DuPage County are filed there, and the Supervisor of Assessments (dupagecounty.gov) has the assessment records.

Who sets the assessed value of a property in DuPage County?

The Supervisor of Assessments, whose page SearchSystems verified is at dupagecounty.gov.

Where are evictions from DuPage County filed?

In the Circuit Court of DuPage County. The file is public unless the court seals it.

How is property assessed in Illinois?

Illinois assesses property at a third of market value; Cook County reassesses one third of the county each year and the rest of the state runs on four-year cycles.

Is this the official DuPage County website?

No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.