Search Cook County, IL Property Records

Data extracted from Cook County property records highlights a median home value of $285,000.00 and a median rent cost of $1,318.00. These figures are directly linked to the median household income recorded at $80,976.50. In property taxes, the county has an average collection of 2.1% from homeowners.

County-level property records typically contain assessment and tax data applicable to the entire county, whereas city-level records may include details such as permits, zoning changes, and municipal boundaries.

Searching for property records in Cook County, IL, can be done online, in person, or through mail, email, or fax requests. Key information, such as the property address, Parcel/Property Index Number (PIN), or owner name, is required to refine searches.

Online tools include the official Assessor Property Details Search for assessment data and the Cook County Property Tax Portal for property tax info. Meanwhile, PropertyChecker presents aggregated ownership and tax data, which can reduce the need to consult multiple sources at the outset. Users often rely on this combination to efficiently confirm basic property details.

Some recorded documents, such as deeds or mortgages, can be accessed through the county clerk’s records search or may require written requests. Common limitations include restricted access to certain detailed documents online, potential fees for certified copies, and delays in the updating of property data.

The sections below describe the main types of property information and explain where each can be accessed.

Property Ownership and Title Information

Property ownership and title information in Cook County, IL, is confirmed through recorded deeds, quitclaim deeds, mortgage documents, and liens, which can be searched through the Cook County Clerk’s Office Record of Deeds Search. Searches typically require the property address, Parcel/Property Index Number (PIN), or owner name.

Property Sales and Transaction History

Property sales and transaction history in Cook County, IL, can be accessed through the Cook County Clerk’s Office Record of Deeds Search and the Assessor Property Details Search portal, which provide recorded sales, deeds, and transfer information.

For additional insight, private property appraisers and PropertyChecker offer compiled transaction histories, valuation estimates, and trends.

Property Tax Assessment and Payment Records

Property tax assessment and current and historical payment records in Cook County, IL, are available through the Cook County property tax assessors via the Assessor Property Details portal or the Property Tax Portal of the Cook County Treasurer’s Office, respectively.

If a property’s assessed value appears inaccurate, the County Assessor’s Office provides a File an Appeal Online site to challenge the assessment. Certified copies of tax bills and payment histories may require a fee or a written request.

Property Characteristics and Parcel Details

Property characteristics and parcel details in Cook County, IL, can be found by conducting a parcel search using the property’s 14-digit Property Index Number (PIN). This number can be entered into the Cook County Viewer or the Assessor’s Parcel ID Search. Searches may reveal information such as lot size, building type, and year built, and can also provide property tax data and related records for each parcel.

Zoning, Land Use, and Planning Records

Zoning, land use, and planning records in Cook County, IL, can be accessed through the Department of Building and Zoning for parcels in unincorporated areas. A property’s zoning classification can be searched using the first ten digits of its permanent real estate index number (PIN). For incorporated areas, each municipality maintains its own zoning and planning records, typically accessible through the local government’s official website or planning department.

Legal Documents Affecting Property

Legal documents affecting property in Cook County, IL, such as annexations, easements, dedications, condominium declarations, highway plats, monuments, and real estate transfer declarations, can be accessed through the Cook County Clerk’s Office Record of Deeds Search.

Records can be retrieved online using the address or Property Index Number (PIN), or by using advanced search options. Copies of certain documents not available online can be requested or purchased at the downtown office.

Building Permits, Inspections, and Construction Records

Building permits, inspections, and construction records in unincorporated areas can be accessed through the Cook County Department of Building and Zoning. Records can be obtained in person, by email at intake.bnz@cookcountyil.gov, or by mail.

Meanwhile, permit applications and e-permits are available online, with required deposits payable through LexisNexis Payment Solutions. Permit status, review comments, and online payment can be tracked via the Building Permit Status Search using the property’s PIN and permit number. Assistance is available at 312‑603‑0500.

Maps and Visual Property Data

Maps and visual property data in Cook County, IL, cover more than 1.8 million parcels and can be accessed through tools like the Cook County Viewer and Cook Central. Cook Central serves as the county’s public GIS portal, offering interactive maps, open spatial datasets, boundary information, and APIs for accessing authoritative geographic data related to property, infrastructure, and land features.

The Cook County Parcel Viewer, also known as CookViewer 3.1, is accessible through the County GIS Department website. Once the page loads, a welcome dialog will appear on the screen. Users can select a preferred language, either English or Spanish, and choose to take a guided tour of the new features.

To start right away, simply click "Skip." To search for a property, use the search bar located at the top of the page. Type in a Parcel PIN, a full or partial address, or an intersection. It is also possible to click directly on any location on the map to view detailed property information. The viewer is free to access and requires no login.

Displayed here are charts summarizing the county's tax rates, accompanied by insights into median home values, income figures, and rent rates.

Median Rent

$1,318.00

Illinois	$762.00
National	$840.25

• +73.0 %
  vs Illinois
• +56.9 %
  vs National

Median Home Value

$285,000.00

Illinois	$116,950.00
National	$173,750.00

• +143.7 %
  vs Illinois
• +64.0 %
  vs National

Median Household Income

$80,976.50

Illinois	$65,699.50
National	$65,108.00

• +23.3 %
  vs Illinois
• +24.4 %
  vs National

Median Property Tax Rate

2.1%

Illinois	1.8%
National	0.74%

• +16.7%
  vs Illinois
• +183.8 %
  vs National

Unemployment Rate

3.63%

Illinois	2.92%
National	2.87%

• +24.3 %
  vs Illinois
• +26.5 %
  vs National

Renter Occupied Housing

34.43%

Illinois	18.61%
National	21.81%

• +85.0 %
  vs Illinois
• +57.9 %
  vs National

The Cook County Clerk’s Office, serving as the Registrar of Deeds since December 7, 2020, maintains recorded documents such as deeds, mortgages, liens, easements, plats, and condominium declarations.

These records establish legal ownership, parcel boundaries, usage rights, and transaction history. County and municipal agencies use this information to confirm ownership for assessments, apply exemptions, interpret land-use restrictions, and verify zoning compliance.

Documents recorded after 1985 are available for online purchase through the Clerk’s Office Record of Deeds Search. Earlier records, however, require in-person access at 118 N. Clark St., Chicago.

Cook County has 134 incorporated municipalities, including one town, 23 cities, and 110 villages. Each municipality has its own official website, where local offices, such as the city or village clerk, provide access to services, including maintenance of local property records.

• Alsip
• Arlington Heights
• Bartlett
• Barrington
• Barrington Hills
• Bedford Park
• Bellwood
• Bensenville
• Berkeley
• Berwyn
• Blue Island
• Bridgeview
• Broadview
• Brookfield
• Buffalo Grove
• Burbank
• Burnham
• Burr Ridge
• Calumet City
• Calumet Park
• Chicago
• Chicago Heights
• Chicago Ridge
• Cicero
• Country Club Hills
• Countryside
• Crestwood
• Deer Park
• Deerfield
• Des Plaines
• Dixmoor
• Dolton
• East Hazel Crest
• Elgin
• Elk Grove Village
• Elmhurst
• Elmwood Park
• Evanston
• Evergreen Park
• Flossmoor
• Ford Heights
• Forest Park
• Forest View
• Frankfort
• Franklin Park
• Glencoe
• Glenview
• Glenwood
• Golf
• Hanover Park
• Harvey
• Harwood Heights
• Hazel Crest
• Hickory Hills
• Hillside
• Hinsdale
• Hodgkins
• Hoffman Estates
• Homer Glen
• Hometown
• Homewood
• Indian Head Park
• Inverness
• Justice
• Kenilworth
• LaGrange
• La Grange Park
• Lansing
• Lemont
• Lincolnwood
• Lynwood
• Lyons
• Markham
• Matteson
• Maywood
• McCook
• Melrose Park
• Merrionette Park
• Midlothian
• Morton Grove
• Mount Prospect
• Niles
• Norridge
• Northlake
• North Riverside
• Northbrook
• Northfield
• Oak Brook
• Oak Forest
• Oak Lawn
• Oak Park
• Olympia Fields
• Orland Hills
• Orland Park
• Palatine
• Palos Heights
• Palos Hills
• Palos Park
• Park Forest
• Park Ridge
• Posen
• Richton Park
• Phoenix
• Prospect Heights
• River Forest
• River Grove
• Riverdale
• Riverside
• Robbins
• Rolling Meadows
• Roselle
• Rosemont
• Sauk Village
• Schaumburg
• Schiller Park
• Skokie
• South Barrington
• South Chicago Heights
• South Holland
• Steger
• Stickney
• Stone Park
• Streamwood
• Summit
• Thornton
• Tinley Park
• University Park
• Westchester
• Western Springs
• Wheeling
• Wilmette
• Willow Springs
• Winnetka
• Worth