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Author: Mark Ainely | Partner GC Realty & Development & Co-Host Straight Up Chicago Investor Podcast
Eviction is the part of this business nobody enjoys, but doing it wrong costs far more than doing it right. Miss a required word in your notice, serve it the wrong way, or file a day too early, and a judge can throw the whole case out, sending you back to square one while the unpaid rent keeps piling up. At GC Realty & Development, we manage roughly 1,500 units across more than 100 municipalities in the Chicagoland area, and eviction is one of the areas where the gap between "I think I did this right" and "I did this right" gets expensive fast. This guide walks through the process step by step, the way we actually run it, so you know exactly what has to happen and in what order.
Key Takeaways
Illinois eviction law is governed by the Forcible Entry and Detainer Act (735 ILCS 5/9-101 et seq.), and every eviction starts with a legally sufficient written notice, not a court filing.
Nonpayment of rent requires a 5-day notice to pay or quit; other lease violations require a 10-day notice, though Chicago gives tenants an extra right to cure that the rest of the state doesn't.
You cannot remove a tenant yourself, even after a valid notice expires. Only a court judgment and a sheriff's enforcement can lawfully do that.
A new Illinois Landlord Retaliation Act took effect January 1, 2025, replacing the old Retaliatory Eviction Act, and bars evicting a tenant for complaining about conditions or organizing.
As of January 1, 2026, House Bill 3566 makes it illegal to list minors as defendants in an eviction case. A filing that names a minor gets dismissed and sealed, and doing it knowingly can expose you to damages and attorney's fees.
Timelines vary sharply by court. As of mid-2026, Cook County (Chicago and suburban Cook alike) is running roughly 5 to 7 months from filing to possession, driven almost entirely by court-side delays; the collar counties (DuPage, Kane, Lake, Will) move much faster, closer to 10 weeks, since they run under state law without Cook County's added layers.
Once you actually have your Order for Possession, the sheriff is rarely the bottleneck; enforcement typically happens within a few weeks (sometimes as fast as 24 hours). The delay lives in the courtroom: Cook County's Early Resolution Program builds an automatic continuance into the first court date, and contested cases are currently waiting 6 to 7 weeks for a trial date instead of the usual 2 to 4.
Step 1: Confirm You Have Legal Grounds and Serve the Right Notice
Every eviction in Illinois starts with a written notice, and the type of notice depends on why you're evicting:
Nonpayment of rent: A 5-day notice to pay or quit under 735 ILCS 5/9-209. It must state the exact amount of past-due rent, nothing else. Late fees, utility charges, or other add-ons cannot be included in that number, or the notice can be challenged as defective.
Lease violations other than nonpayment: A 10-day notice under 735 ILCS 5/9-210. Outside of Chicago, this is a straight notice to quit. State law doesn't require you to give the tenant a chance to fix the problem, though many landlords choose to allow it anyway.
Illegal activity: A 5-day notice to quit, with no opportunity to cure, for things like a felony arrest connected to the unit.
Ending a month-to-month tenancy without cause: 30 days' written notice under state law. Week-to-week tenancies need only 7 days. Chicago is again the exception here: its Fair Notice Ordinance requires 30, 60, or 120 days depending on how long the tenant has lived there, and that graduated schedule applies only to ending a no-fault tenancy, not to nonpayment. Don't confuse the two; a nonpayment case still runs on the 5-day track no matter how long the tenant has been in the unit.
Chicago is different. Inside the city, tenants get an additional right to cure lease violations that doesn't exist under state law elsewhere. Chicago's 5-day nonpayment notice also has to include specific statutory language, essentially, "Only FULL PAYMENT of the rent demanded in this notice will waive landlord's right to terminate the lease," unless you've agreed in writing to accept partial payment. Leave that language out and you've handed the tenant's attorney an easy motion to dismiss.
Notices must be served correctly: personal delivery, leaving a copy with someone over 13 at the property, or posting and mailing if no one is home to accept it. Keep a dated, signed record of how and when it was served. That record is often the first thing a judge asks about.
Address the notice to adults only. As of January 1, 2026, Illinois House Bill 3566 amended the Illinois Eviction Act to bar naming minors as defendants anywhere in the process, including on notices and in the court filing itself. If you don't know exactly who's living in the unit, "and unknown occupants" is the safe catch-all language; never list a child by name. This is also a good moment to make sure your lease clearly separates leaseholders (the adults responsible for rent) from authorized occupants, and to keep dates of birth on file so you know when an occupant turns 18 and needs to be added to the lease.
Don't sit on a nonpayment. Rent is legally late the day after it's due; the grace period in most leases only controls when you can charge a late fee, it has nothing to do with when you're allowed to serve notice. With a Chicago Association of Realtors lease, you can serve the 5-day notice the very next day after rent is due. Owners who wait 45 to 90 days hoping a tenant catches up are giving away weeks they'll never get back once the case is filed and the court's own delays start stacking on top.
Step 2: Let the Notice Period Run
Once served, the clock starts. You cannot file in court before the notice period expires, and if the tenant cures the issue (pays in full within the 5 days, for example), the eviction can't proceed on that notice. If the tenant pays or corrects the violation after the deadline but before you've filed, document that date carefully; whether you're still required to accept it depends on what you've already agreed to and the specific notice type.
Step 3: File the Eviction Complaint
If the notice period lapses without resolution, you file a complaint for possession with the circuit court in the county where the property sits. In Cook County, that's the Circuit Court's eviction courtroom system. The complaint should specify the legal grounds, the amount owed if applicable, and request possession of the unit. You can also request a money judgment for unpaid rent in the same filing, though collecting on that judgment is a separate process from getting possession back.
Double-check the defendant list before you file. Under HB 3566, a complaint that names a minor gets dismissed and the record sealed automatically, meaning you refile from scratch, pay new court costs, and lose the time you already spent waiting out the notice period. If it looks intentional, the court can also award actual damages, attorney's fees, and statutory penalties on top of that.
Step 4: Serve the Summons
After filing, the tenant must be formally served with the summons and complaint. As of 2025, you're no longer required to use the sheriff first; a licensed private process server can serve it instead, which is often faster and more reliable; sheriff service alone succeeds only around 40% of the time on the first attempt, and a failed attempt means asking the court for another date. This gives the tenant formal notice of the court date and their right to respond. Improper service here is one of the most common reasons eviction cases get delayed or dismissed.
Step 5: Attend the Court Hearing
Both sides appear before a judge. If the tenant doesn't show, you can typically get a default judgment for possession. If they do appear, the case may be resolved that day, continued for a trial date, or, in Cook County, routed through the Early Resolution Program first. That program builds an automatic continuance into the first appearance, roughly 28 days in Chicago and 14 days in suburban Cook, while the tenant is connected to free legal advice, mediation, and rental assistance. Chicago's Right to Counsel program also provides free attorneys to income-qualified tenants, and represented tenants are considerably more likely to get a case dismissed or negotiate a longer move-out, so expect represented cases to run longer than they used to. If a case doesn't settle in mediation, contested trials in Cook County are currently being scheduled 6 to 7 weeks out rather than the usual 2 to 4. Rental assistance, when a tenant applies, can also stall a case in the middle; approval and payout commonly take 1 to 3 months, and judges will often continue a case to let that process play out. Bring your lease, the notice with proof of service, a ledger showing the amount owed, and any communication records regardless of which track the case takes. Judges expect clean documentation, and gaps in your paper trail are where cases get bogged down further. If you work with a property manager, this is a step they can typically handle on your behalf, showing up to the court date, working with your attorney, and keeping the case moving, so you're not the one taking time off to sit in a Cook County courtroom.
Step 6: Obtain and Enforce the Judgment
If the court rules in your favor, it issues an order for possession. This is the point where many landlords assume they can change the locks. You can't. Only the sheriff's office can physically remove a tenant. In Cook County, once the order is placed, the sheriff can technically act as soon as 24 hours later, and most owners see the physical eviction within a few weeks; the sheriff is rarely where a case gets stuck. The one real exception is seasonal: enforcement pauses every winter over the holidays (this past cycle ran December 19, 2025 through January 5, 2026), and the sheriff won't carry out an eviction when the temperature hits 15 degrees or below. A judgment won in December or January should come with an expectation of a slower enforcement window. Your own paperwork can also stall this step; a wrong unit number, a missing key to a common door, more occupants living in the unit than were named in the filing, or a tenant motion filed within 30 days of the order can all send you back to the end of the line. Attempting a "self-help" eviction, changing locks, shutting off utilities, or removing belongings before the sheriff acts, exposes you to tenant lawsuits and potential damages regardless of how clearly you'd already won in court.
A Faster Alternative Worth Considering
In the collar counties, formal eviction runs a relatively manageable 10 weeks or so. In Cook County right now, the realistic range is 5 to 7 months, driven by the Early Resolution Program's built-in continuances, longer waits for contested trials, and rental assistance timelines, not by anything a landlord did wrong. For situations where the relationship has broken down but you're not preserving an active nonpayment claim you need to keep on the books, a cash-for-keys agreement can resolve things in days instead of months. It isn't right for every situation, but given how long a contested Cook County case can now run, it's worth evaluating seriously before you commit to the court timeline.
FAQ
Can I evict a tenant without going to court? No. Illinois law requires a court judgment before you can remove a tenant, even after a valid notice period has expired. Locking someone out or shutting off utilities without a judgment is illegal, regardless of how much rent is owed.
How long does the eviction process take in Illinois? It depends heavily on the county. As of mid-2026, Cook County, both Chicago and suburban Cook, is running roughly 5 to 7 months from filing to getting possession back, mostly due to court-side programs and scheduling, not the sheriff. The collar counties (DuPage, Kane, Lake, Will) move faster, typically closer to 10 weeks, since they operate under state law without Cook County's added layers. Once you have an Order for Possession, sheriff enforcement itself is usually quick, often within a few weeks and sometimes as fast as 24 hours.
Do I need a lawyer to file an eviction? Individual landlords aren't required to hire an attorney to represent themselves, but LLCs and corporations generally must be represented by counsel in Illinois courts. Even for individuals, a single defective notice or service error can cost more in delay than an attorney's fee would have.
What is the new Landlord Retaliation Act? Effective January 1, 2025, this law replaced the older Retaliatory Eviction Act and prohibits landlords from evicting, or taking other adverse action against, a tenant in retaliation for complaining about habitability issues, contacting a government agency, or organizing with other tenants. If a tenant has recently made a complaint, document your independent, non-retaliatory grounds for the eviction carefully.
Can a tenant stop the eviction by paying after I've filed in court? Sometimes, but it depends on the notice type and whether you've agreed to accept the payment. A 5-day nonpayment notice can generally be resolved by full payment before the notice period runs out; once you've filed, whether a late payment stops the case is a matter of what you're willing to accept, not a guarantee under the notice itself.
Can I list my tenant's kids on the eviction notice or complaint? No. Since January 1, 2026, Illinois House Bill 3566 makes it illegal to name minors as defendants in an eviction case at any stage. A filing that lists a child gets dismissed and sealed, and you'll need to refile with new fees and a new court date. We cover this change, and how to update your lease and screening paperwork for it, in Understanding the 2026 Illinois Eviction Act Changes: Protecting Minors and Staying Compliant.
Don't Go At This Alone!
Eviction is unforgiving of small mistakes, wrong notice, wrong service, wrong math on the rent demand, and any of them can send you back to day one. At GC Realty & Development, we manage this process across roughly 1,500 units and 100+ municipalities, which means our notices, our service records, and our court documentation are built the same way every time, not improvised case by case. If you'd rather have that consistency working for you than learn it the hard way, that's exactly what we do.
Related: Understanding the 2026 Illinois Eviction Act Changes: Protecting Minors and Staying Compliant Related: Why Cook County Evictions Are Taking Longer Right Now
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