What Chicago and Illinois Landlords Can and Cannot Do in 2026

Why this matters more for the small owner than the big one

Most of the rental housing in Chicago is not owned by institutions. It is owned by the person who lives in the other half of the two-flat, or who bought a three-flat to build a little wealth and a little retirement. Those owners carry the same legal duties as a thousand-unit operator, but without the lawyer on retainer or the compliance department. That is exactly who tends to get tripped up when the rules change.

And the rules did change for 2026. None of it is dramatic on its own, but the penalties for getting it wrong are real, and a few of the changes touch paperwork that landlords do every single time they sign a lease or pay a security deposit. In our opinion, the owners who treat this as a fifteen-minute housekeeping job now will avoid a very expensive afternoon later. Here is the honest, practical version.

What you cannot do: rent control is off the table statewide

Start with the question we hear most when rents make the news. No, Chicago cannot cap your rent, and neither can any other Illinois city or county. The Rent Control Preemption Act of 1997 (50 ILCS 825, Public Act 90-0404) bars local governments from enacting residential rent control, and it has not been repealed (see the statute on the Illinois General Assembly site).

There has been steady political pressure in Springfield to lift that ban, and bills get introduced most sessions. As of mid-2026, none has passed, so the preemption stands. We think owners should watch this rather than worry about it. The honest read is that statewide rent control is not currently the law, but it is a live debate, and a serious change would not happen quietly. If it ever moves, you will have plenty of notice to plan around it.

The Chicago RLTO still governs most city rentals

If you rent out a unit inside Chicago, your starting assumption should be that the Residential Landlord and Tenant Ordinance (RLTO) applies. It covers most rental housing in the city and sets detailed rules on security deposits, required disclosures, repairs, and notice. The biggest carve-out is the owner-occupied building of six units or fewer. If you live in your two-flat or three-flat, those units are generally exempt from the RLTO, though the Illinois Security Deposit Return Act and Cook County rules can still reach you.

That exemption is narrower than people think, and it is fragile. The day you move out of your owner-occupied building, the RLTO can switch on for every unit. So if you are weighing whether to keep living on-site, understand that your compliance burden changes the moment you leave. Confirm your building's status on the city's RLTO page before you assume you are exempt, because the consequences of guessing wrong run in the tenant's favor.

• Generally covered: most apartments, condos rented out, and multi-unit buildings inside Chicago.
• Generally exempt: owner-occupied buildings with six units or fewer (but other state and county rules may still apply).
• Always required under the RLTO: attach the city's RLTO summary to every lease and renewal, and give a written receipt for rent paid in cash.

What changed for 2026, and what it costs you to ignore it

Several Illinois changes took effect January 1, 2026, and they apply to landlords across the state, not just in Chicago. The headline is the Summary of Rights for Safer Homes. The state now requires that a Department of Human Rights summary explaining tenant protections related to domestic and sexual violence be attached as the first page of every written lease and renewal, with each adult tenant acknowledging it (see the Illinois Department of Human Rights page). Failing to comply exposes a landlord to the greater of actual damages up to $2,000 or $100.

The second change is in eviction court. Under House Bill 3566, minors may no longer be named as defendants in an eviction. Name a child and the entire case can be dismissed, and a willful violation carries a $1,000 statutory penalty plus actual damages and attorney's fees (per KSN Law's 2026 landlord update). The practical fix is simple: list only the adult tenants on the lease and the complaint.

Two more changes are about how rent moves. Landlords cannot force tenants into electronic-only payment. If you use an online portal, you still have to let a tenant pay by cash or check without penalty, and reporting in 2026 indicates landlords are also expected to provide written receipts for rent and deposits (per this Suburban Real Estate summary of 2026 landlord changes). We would treat receipts as standard practice regardless. A paper trail protects the landlord at least as much as the tenant.

Security deposits: small money, big liability

Security deposits are where careful landlords get burned, because the dollar amounts are tiny and the penalties are not. For 2026, the Chicago RLTO interest rate a covered landlord must pay on held deposits is 0.01%, and the statewide rate set under the Illinois Security Deposit Interest Act is even smaller (per the Chicagoland Apartment Association's 2026 rate notice). The interest is almost nothing. The mistake of forgetting to pay it, or of commingling the deposit, or of missing the return deadline, is not.

Our blunt advice to small owners: if a security deposit makes you nervous, consider not taking one at all and using a move-in fee where it is permitted, or hold the deposit in a separate account and calendar the return deadline the day the tenant moves out. The RLTO penalties for deposit violations can run to multiples of the deposit plus fees. That is the rare place where the cleanest move is to reduce the number of things that can go wrong.

Eviction and rental limits: slow on purpose, and getting narrower

Eviction in Illinois is a court process, not a self-help one. You cannot change the locks, shut off utilities, or remove a tenant's belongings. You serve the correct notice, file in court if the tenant does not cure or leave, and only the sheriff enforces an order. The 2026 minors rule is one more reason to get the paperwork exactly right, because a defective filing can send you back to the start. For anything contested, this is the moment to involve a landlord-tenant attorney rather than save the fee.

Finally, do not assume you can pivot a long-term unit to nightly rentals. Chicago's Shared Housing Ordinance requires registration to rent short-term, a shared-housing unit generally has to be the host's primary residence, and a separate license applies once you operate two or more units (see the Chicago short-term rental overview). New ADUs created under Chicago's coach-house expansion are also barred from short-term use. The trend across both the city and the state is clear, and in our view it is not going to reverse: more disclosure, more tenant protection, and tighter limits on converting housing to hotels. Run the numbers on the rules that exist, not the ones you wish existed. Our calculators can help you sanity-check the math before you commit.