Separating municipal and county questions in Des Plaines
Distinguish between Des Plaines municipal responsibilities and Cook County obligations when selling your home to ensure all records are correctly maintained.
The short answer
Selling a home in Des Plaines involves two distinct jurisdictions: the City of Des Plaines for local building matters and Cook County for tax assessments. Successfully managing the sale requires you to identify which authority governs each document—permits and local inspections belong to the city, while tax exemptions and valuations are managed at the county level.
Handling Cook County Assessments
Cook County residential property is assessed at 10 percent of fair market value. To maintain an accurate record, monitor the Cook County Assessor’s portal periodically to confirm that your property description and current assessment accurately reflect your home.
Planning Example: If your home’s EAV has changed, how can you use the official assessment change notice to prepare your buyer for upcoming property tax cycles?
Maintaining Disclosure Integrity
Under the Residential Real Property Disclosure Act, your disclosure report is a declaration of your actual knowledge of material defects. Do not conflate property tax issues with physical condition disclosures.
Professional Inquiry: If you have questions about how a specific municipal zoning violation or unpermitted work relates to your legal duty to disclose, consult with a real estate professional or attorney.
Preparing for Closing
The closing process requires verifying tax statuses and clearing any liens. Because unpaid taxes can lead to a lien sale, ensuring your property tax records are current is a vital step for any Des Plaines seller.
Planning Example: If you are using a third-party representative for your closing, how can a letter of authorization help them understand the difference between municipal permit records and county tax files?
Checklist
- Separate documentation into municipal and county folders.
- Obtain your property tax records from the Cook County Treasurer.
- Check local city records for outstanding permit requirements.
- Confirm your homestead exemption status with Cook County.
- Create a timeline of property improvements for your disclosure report.
Selling in Des Plaines? Read our Des Plaines seller guide for local fee math and context.
Common questions
What is the consequence of failing to provide a disclosure report to a buyer?
Under the Illinois Residential Real Property Disclosure Act, if a seller fails to provide the required report, the buyer has the legal right to terminate the contract.
Can I perform an administrative appeal of my property tax assessment?
Yes, assessment appeals for Cook County properties can be filed with the Illinois Property Tax Appeal Board or the Cook County Assessor’s office.
Sources
- CFPB — Buying a houseChecked October 12, 2026
- Illinois Residential Real Property Disclosure ActChecked October 12, 2026
- Illinois Department of Revenue — Property tax overviewChecked October 12, 2026
- U.S. Census Bureau — 2020 place dataChecked October 12, 2026
- U.S. Census Bureau — Geographic reference and place definitionsChecked October 12, 2026
- U.S. Census Bureau — 2022 government-unit directoryChecked October 12, 2026
This guide is general educational content from SQFT IO, prepared with AI assistance. It is not legal, tax or loan advice. Talk with a licensed attorney, tax professional or lender about your situation. SQFT IO Illinois license 478.027617.