I’m Mike Fisher with MF CashFlow Property Management, part of M Property Group LLC, a Licensed Illinois Real Estate Broker. One of the first things I do when I sit down with a new owner client is ask them what rulebook they think they’re operating under. Nine times out of ten, they’re not sure, and that uncertainty is exactly where expensive mistakes get made. If you own rental property in the Chicago south and west suburbs, here’s the straight story on Chicago suburbs rental rules for landlords and which ones actually affect you.
Chicago’s RTLO Doesn’t Reach the Suburbs
Chicago has the Residential Landlord and Tenant Ordinance, the RTLO. It’s a tenant-protective law with detailed rules on security deposits, notice requirements, late fees, and more. A lot of owners assume it covers the whole metro area. It doesn’t. The Chicago RTLO applies only to properties inside the city limits. If your rental is in Dolton, Matteson, Harvey, Lansing, Evergreen Park, or anywhere else in the south or west suburbs, Chicago’s RTLO is not your ordinance. Stop reading it as your guide.
Cook County’s RTLO: This One Probably Does Apply to You
Cook County passed its own Residential Tenant and Landlord Ordinance, effective 2021. If your property sits in suburban Cook County, this is the law you need to know.
On late fees: the Cook County RTLO caps them at $10 on the first $1,000 of monthly rent, plus 5% on any amount above that. If you’ve seen a “$20 or 20%” figure floating around landlord forums, ignore it. That number comes from the Illinois self-storage statute. It has nothing to do with residential leases. Charge the wrong amount and you’re handing your tenant a winning argument.
On security deposits: Cook County caps them at 1.5 times the monthly rent, and you’ve got 30 days to return it with a written, itemized statement of any deductions. Miss that deadline and you’re in trouble. These aren’t suggestions. Want to see how your current fees compare to what a managed property looks like? Check out what management should cost on a well-run portfolio.
Statewide Rules That Follow You No Matter What
Some rules apply across all of Illinois, whether your property is in Chicago, the suburbs, or downstate. Source-of-income protection is one of them. As of January 2023, Illinois law makes it illegal to deny a rental applicant solely because they’re using a Section 8 housing voucher. That’s a statewide rule under the Illinois Human Rights Act. You can still screen for credit, income, rental history, and the rest. You just can’t automatically say no because someone has a voucher. The Illinois Department of Human Rights enforces this and they do follow up on complaints.
Criminal history screening has its own layer in Cook County, on top of the statewide baseline. Under Cook County’s Just Housing Amendment, you have to fully evaluate an applicant on all your other criteria first. Then, and only then, do you look at criminal history. Convictions older than three years generally can’t be used against them, and you have to do an individualized assessment. No blanket bans. Our tenant screening process is built around staying compliant while still protecting your investment.
After 35 years investing in real estate and working through thousands of transactions, I can tell you that most of the regulatory headaches I’ve seen came from owners who assumed they knew which rules applied to them. Run a quick ROI check on your property, then let’s talk about whether your current setup is actually set up right.
FAQ: Chicago Suburbs Rental Rules for Landlords
Does the Chicago RTLO apply to my suburban rental property? No. The Chicago RTLO only applies to properties inside the City of Chicago.
Can I turn down a Section 8 applicant in Illinois? Not based on the voucher alone. Since January 2023, Illinois state law prohibits refusing to rent to someone solely because they hold a housing choice voucher. You can still screen for income, credit, and rental history. The voucher itself can’t be the reason for denial.
What’s the maximum late fee I can charge in suburban Cook County? The Cook County RTLO caps late fees at $10 on the first $1,000 of monthly rent, plus 5% on anything above that. The “$20 or 20%” number you’ll find on some landlord sites is from the Illinois self-storage law and does not apply to residential rentals. Use the wrong figure and you’re exposed.
If you want to make sure your properties are set up right, your fees are legal, and you’re not sitting on a regulatory problem you don’t know about yet, let’s talk. Book a call and I’ll walk you through exactly where you stand.
This is general information, not legal advice.
