Cook County Property Records
Cook County property records are managed by the Cook County Assessor's Office in Chicago. With more than 5.1 million residents, Cook County is the largest county in Illinois and the second most populous in the country. You can search Cook County property records online using the county's free search portal or visit the assessor's office in person. The assessor tracks values, ownership data, and tax details for every parcel in Cook County. If you need to look up assessed values, check tax bills, or find who owns a piece of land, this page walks through how to access Cook County property records and what to expect.
Cook County Property Records Quick Facts
Cook County Assessor's Office
The Cook County Assessor's Office handles all property records in Cook County. Fritz Kaegi serves as the current assessor. His office sets assessed values for every residential and commercial parcel in the county. Unlike the rest of Illinois, Cook County does not use township assessors. The assessor's office does all the work itself. Their stated goal is "to deliver accurate and transparent assessments of all residential and commercial properties." That means one office covers the entire county, which makes Cook County unique in the state.
Property taxes in Cook County involve coordination between offices at the county, state, and local levels. The assessor sets values. The Cook County Board of Review hears appeals. The county clerk applies tax rates. Then the Cook County Treasurer sends out tax bills and collects payments. Under the Illinois Property Tax Code (35 ILCS 200/), all property in Illinois must be assessed at 33 1/3 percent of fair market value. Cook County follows that same standard, but its classification system means different property types can end up with different effective rates.
The Cook County Assessor's website is the main hub for property records in Cook County. It has tools for searching parcels, filing appeals, and applying for exemptions.
From this page you can access forms, check assessment timelines, and find contact details for the Cook County Assessor's Office.
| Main Office |
118 N. Clark Street, Room 320 Chicago, IL 60602 Phone: (312) 443-7550 Email: assessor@cookcountyil.gov |
|---|---|
| South Office |
16501 S. Kedzie Ave, Room #237 Markham, IL 60426 Phone: (312) 443-7550 |
| Hours | Monday through Friday, 8:30 a.m. to 5:00 p.m. |
| Website | cookcountyassessoril.gov |
Search Cook County Property Records Online
The best way to search Cook County property records is through the free online portal at cookcountypropertyinfo.com. This site pulls together data from the assessor, treasurer, and clerk into one place. You can look up any parcel by its Property Index Number or by street address. Results show assessed values, tax amounts, exemptions, sale history, and more. No account or fee is needed for basic searches of Cook County property records.
If you do not know your PIN, use the "Search by Property Address" link. Type in the street number and name, and the system will find matching parcels in Cook County. The PIN is a 14-digit code that stays with the parcel no matter who owns it. Every tax bill and assessment notice lists this number. Keep it handy because it makes searching Cook County property records much faster. You can also search by name if you want to find all parcels tied to a specific owner in Cook County.
The Cook County property search portal at cookcountypropertyinfo.com gives you direct access to parcel data across the entire county.
Use this tool to pull up assessed values, tax bills, and ownership details for any property in Cook County.
Note: The Cook County property search site works best when you have at least part of the address or the full PIN.
Cook County Property Assessment Cycle
Cook County uses a triennial assessment cycle. That means the assessor revalues all property every three years. The rest of Illinois follows a quadrennial (four-year) cycle with yearly adjustments, but Cook County has its own schedule under the Illinois Property Tax Code. The county is split into three districts: north suburbs, south suburbs, and the City of Chicago. Each district gets reassessed in a different year. So roughly one-third of Cook County property records get updated values each year.
When your area comes up for reassessment, the assessor will mail a notice showing the new value. You have about 30 days to file an appeal if you think the number is too high. Appeals go to the Cook County Assessor's Office first, then to the Cook County Board of Review if you are still not satisfied. This process generates records that become part of the property file in Cook County. Assessment data for Cook County is public. Anyone can look it up online.
The lien date for all property in Illinois is January 1 each year, per 35 ILCS 200/. That is the date the county uses to set who owns the land and what it is worth. Tax bills go out the following year. Cook County property taxes are paid in two installments, and both the assessor and treasurer websites show payment history for each parcel.
Property Tax Exemptions in Cook County
Cook County offers several exemptions that reduce the assessed value on your home. You apply through the Cook County Assessor's Office. Each exemption has its own rules and deadlines.
The General Homestead Exemption cuts $10,000 from your assessed value if you own and live in your home. That amount is higher in Cook County than the $6,000 used in the rest of Illinois. The Senior Citizens Homestead Exemption takes off $8,000 for homeowners age 65 and older (also higher than the $5,000 available outside Cook County). The Senior Citizens Assessment Freeze locks your value in place so it does not go up. You must meet income limits to get the freeze. The Disabled Persons Homestead Exemption gives a $2,000 cut. The Disabled Veterans Homestead Exemption varies based on your disability rating and can go up to full exemption in some cases. There is also a Returning Veterans Homestead Exemption that offers a one-time $5,000 reduction for those who come back from active duty.
- General Homestead Exemption: $10,000 reduction
- Senior Citizens Homestead Exemption: $8,000 reduction
- Senior Citizens Assessment Freeze: locks assessed value
- Long-time Occupant Homestead Exemption: varies by income
- Home Improvement Exemption: defers increases up to 4 years
The Long-time Occupant Homestead Exemption is worth noting for Cook County. It helps people who have lived in the same home for at least 10 years and meet income limits. The Home Improvement Exemption defers the increase in assessed value from upgrades for up to four years. Both of these show up in Cook County property records when applied to a parcel. All exemptions appear on your tax bill and in the online property search results for Cook County.
Cook County Property Records Contact
Getting help with Cook County property records is straightforward. The main assessor's office is at 118 N. Clark Street in downtown Chicago. Walk in during business hours to talk with staff about your assessment, file for an exemption, or get copies of property records. The office is open Monday through Friday from 8:30 a.m. to 5:00 p.m. You can also call (312) 443-7550 or send an email to assessor@cookcountyil.gov.
The Cook County Assessor contact page lists all office locations and phone numbers for the assessor's staff.
Check this page for satellite office locations in Markham, Skokie, Rolling Meadows, and Bridgeview if you live in the suburbs of Cook County.
For tax bill questions, the Cook County Treasurer's Office handles that side of things. They can tell you how much you owe, when payments are due, and whether any past-due amounts exist on a parcel. The treasurer's office has its own website and phone line separate from the assessor. For state-level guidance, the Illinois Department of Revenue can point you to the right office. Their Local Government division is reachable at REV.LOCALTAX@ILLINOIS.GOV or 217-785-6518.
Note: The Cook County Building and Zoning Department can be reached at 312.603.0500 or intake.bnz@cookcountyil.gov for permits and zoning questions.
Cook County Tax Bills and Payments
The Cook County Treasurer's website is where you go to view and pay tax bills. Property tax bills in Cook County go out in two installments each year. The first installment is typically due in March and the second around August, though dates can shift. You can search by PIN or address to find your bill. The site shows payment history, amounts due, and any penalties for late payment. All of this ties back to the property records kept by the assessor.
The treasurer's office provides detailed information about Cook County property tax payments and any outstanding balances on a parcel.
Use the treasurer's site to look up past payments, print receipts, and check due dates for Cook County property taxes.
Cook County property taxes are paid in arrears under Illinois law. The bill you get this year covers the prior year's assessed value. So when you search Cook County property records, the tax year may be one year behind the payment year. That can cause some confusion, but it is how all of Illinois works. The treasurer's site makes it clear which tax year each payment covers.
Getting Cook County Property Records In Person
If you prefer to handle things face-to-face, visit the Cook County Assessor's Office at 118 N. Clark Street, Room 320 in Chicago. The staff there can look up any parcel, print records, and help you understand your assessment. Bring the property address or PIN with you. Walk-in visits do not require an appointment. The south suburban office at 16501 S. Kedzie Ave in Markham also serves Cook County residents who live in that area.
The Cook County Recorder of Deeds is another source for property records. While the assessor tracks assessed values and exemptions, the recorder keeps deed transfers, mortgages, and liens. These are separate offices but both hold important property records for Cook County. The recorder's office is in the same building at 118 N. Clark Street. For questions about who transferred a parcel or what mortgages are on file, the recorder is the right place to check in Cook County.
Cities in Cook County
Cook County has dozens of cities, towns, and villages. All of them have their property records handled by the Cook County Assessor's Office. The cities below have their own pages with local details about how to search property records in that area.
Nearby Counties
These counties border Cook County. If you own property near a county line, check your PIN to make sure you search property records in the right county. Each county runs its own assessment office.