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 October 2, 2026.

About this guide

Lake County, Illinois, has about 719,000 residents (2024 Census Bureau estimate). The title to a parcel in Lake 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: Lake County public records, Lake County arrest records, Lake County warrants, Lake County inmate search, Lake County criminal records, Illinois arrest records and Illinois inmate search.

Deeds, Mortgages and Liens in Lake County

Who owns a parcel in Lake County and what it sold for are in the deed records of the County Recorder, with every lien or mortgage against the land.

Assessed Values and the Tax Roll in Lake County

The Supervisor of Assessments sets the value each parcel in Lake 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 tax.lakecountyil.gov/forms/htmlframe.aspx?mode=content%2Fhome.htm (page title: Lake County, IL Property Tax Information), which answered when SearchSystems opened it on September 23, 2026.

More Official Property and Land Records Pages for Lake County

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

Permits and City Records in the Cities of Lake County

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

The rest: Wauconda, Park City, Round Lake Park and Lake Bluff.

Evictions and Court Cases About Land in Lake County

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

The court records page SearchSystems verified for the county is at ilsos.gov/departments/archives/databases/lake.html, phone 815-753-1807.

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 Lake County?

The County Recorder.

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

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

Where are evictions from Lake County filed?

In the Circuit Court of Lake 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 Lake 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.