The Illinois eviction process runs on a strict statutory track set by the Forcible Entry and Detainer Act, 735 ILCS 5/9-101 through 9-121. A landlord has to serve the right written notice, wait out the notice period, file a complaint in circuit court, win an order from a judge, and then hand that order to the county sheriff for enforcement. Skip a step, mis-serve a notice, or file a day too early, and the judge can dismiss the case.
When a Landlord Can File
Section 9-102 of the Code of Civil Procedure lists the situations that allow a landlord to sue for possession. For most residential renters, three grounds cover almost everything:
- Nonpayment of rent that is due under the lease.
- A material lease violation, such as unauthorized pets, excessive noise, or unauthorized occupants.
- Holdover after the lease has expired by its own terms or been properly terminated by notice.
Section 9-102 also reaches less common situations, including defaulting buyers under a land contract and condominium owners who fall behind on assessments or violate association rules.1Justia. Illinois Code 735 ILCS 5 – Code of Civil Procedure, Section 9-102 The ground has to be established before any notice goes out.
The Written Notice That Must Come First
No eviction case can be filed until the landlord delivers the correct written notice and the notice period has run out. Which notice depends on why the landlord wants the tenant out.
Five-Day Notice for Unpaid Rent
If the tenant is behind on rent, the landlord may serve a written demand giving at least five days to pay the full amount owed. Pay everything in the window and the eviction stops. Fail to pay, and the landlord may treat the lease as terminated and file suit without further notice.2Illinois General Assembly. Illinois Code 735 ILCS 5/9-209 – Demand for Rent, Eviction Action
A detail that surprises both sides: a partial payment during the five days does not automatically kill the notice. State law lets the landlord accept partial rent without waiving the right to proceed, provided the notice contains the required language that only full payment waives termination. If the total paid falls short by the end of the notice period, the notice remains good, and the landlord can even collect past-due rent after filing without invalidating the case. A written agreement to continue the lease in exchange for a partial payment, though, ends the landlord’s right to proceed on that notice.2Illinois General Assembly. Illinois Code 735 ILCS 5/9-209 – Demand for Rent, Eviction Action
Ten-Day Notice for a Lease Violation
For any lease breach other than nonpayment, the landlord serves a ten-day notice to quit that identifies the violation and tells the tenant to leave within ten days. The standard state notice does not offer a cure period. It simply terminates the tenancy.3Illinois General Assembly. Illinois Code 735 ILCS 5/9-210 – Notice to Quit
Seven or Thirty Days to End a Periodic Tenancy
When the landlord simply wants to end a periodic tenancy and there is no violation, the required notice depends on the rent cycle. A week-to-week tenancy takes at least seven days. Any other tenancy shorter than one year, including month-to-month, takes at least thirty days.4Justia. Illinois Code 735 ILCS 5 – Article IX, Eviction, Section 9-207 The eviction case cannot be filed until the full period has run.
How the Notice Must Be Delivered
A well-drafted notice means nothing if it is served the wrong way. Section 9-211 recognizes three methods:
- Personal delivery to the tenant.
- Substitute service by leaving the notice with someone at least 13 years old who lives at or is in possession of the premises.
- Certified or registered mail with a return receipt from the addressee.
If no one is in actual possession, the notice may be posted on the premises.5Illinois General Assembly. Illinois Code 735 ILCS 5/9-211 – Service of Demand or Notice Keep proof: a signed affidavit describing personal delivery, the mail receipt, or a dated photo of the posted notice. Judges look at service closely, and a landlord who cannot prove it will lose the case.
Filing the Case in Circuit Court
Once the notice period ends without cure or move-out, the landlord files an Eviction Complaint and an Eviction Summons in the circuit court for the county where the property sits.6Illinois Courts. Eviction Complaint Standardized forms are available through the Illinois Courts.7Office of the Illinois Courts. Eviction
The complaint has to name every adult occupant, describe the property precisely (with unit or apartment number), state the ground for eviction, and attach the notice and proof of service. Lease-violation cases require the lease or the relevant sections. If the landlord is also seeking unpaid rent, the complaint should state the amount claimed.
Illinois requires filings through the statewide electronic system, eFileIL.8State of Illinois Office of the Illinois Courts. eFileIL (Statewide E-Filing) Fees vary by county and by whether the landlord is seeking possession only or possession plus a money judgment, generally in the range of about $100 to $350. After the clerk processes the filing, the court sets a hearing date, and the tenant has to be served with the summons and complaint.
The Hearing and the Eviction Order
At the initial hearing, the judge checks whether the landlord followed each procedural requirement: the correct notice type, a valid method of service, and full expiration of the notice period before filing. Most cases are decided here. A five-day notice with a filing on day four fails. A notice sent by regular mail instead of certified mail fails.
If the tenant contests the case, it can proceed to a bench trial on the return date, with testimony and evidence from both sides. If the landlord proves the case, the judge signs an Eviction Order granting possession and setting a specific date and time by which the tenant must vacate.9Illinois Courts. Eviction Order The judge has some discretion on the move-out date, though in emergency housing proceedings the order cannot be stayed for more than seven days.
Sheriff Enforcement Only; No Self-Help
A signed order does not let the landlord touch the tenant or the unit. Only the county sheriff can enforce an eviction order and remove occupants.10Illinois Legal Aid Online. What If I Don’t Move Out by the Date Ordered by the Court? The landlord delivers a certified copy of the order to the sheriff’s office, pays a separate execution fee, and waits on the sheriff’s schedule, which can run from several days to several weeks after the court’s move-out date.
Illinois prohibits landlord self-help. A landlord cannot change the locks, remove doors, take out the tenant’s belongings, or otherwise interfere with the tenant’s use of the unit to force a departure. The rule on utilities is explicit: a landlord may not cause utility service to be interrupted or discontinued in an occupied building, whether by nonpayment on a master-metered account or by tampering with equipment.11Illinois General Assembly. Illinois Code 765 ILCS 735/1.4 – Prohibition on Termination of Utility Service by Landlord A lockout or shutoff can produce damages against the landlord and become a defense in the eviction case itself.
Defenses a Tenant Can Raise
Several defenses can defeat an Illinois eviction.
Procedural failures by the landlord win the most cases. Wrong notice, wrong information on the notice, wrong service method, or a filing made before the notice period ran are all fatal. In Cook County, a landlord who serves a five-day or ten-day notice must file within 30 days of the notice or by the end of the next rent payment period, whichever is later; missing that window means starting over with a fresh notice.
Habitability problems can defeat a nonpayment case. Illinois recognizes an implied warranty of habitability requiring landlords to keep rental property safe and fit to live in. A tenant can argue that the landlord’s failure to maintain heat, running water, electricity, or serious repairs reduced the unit’s value below the rent charged.
Retaliation is a recognized defense. If the eviction followed a code complaint, a repair request, contact with a government agency, participation in a tenant organization, or another protected act, the tenant can argue the case is retaliatory. The Illinois Landlord Retaliation Act bars terminating a tenancy, raising rent, reducing services, or threatening eviction for those reasons.12Illinois General Assembly. Illinois Code 765 ILCS 721 – Landlord Retaliation Act
Discrimination under the federal Fair Housing Act is also a defense. A landlord cannot evict based on race, color, national origin, religion, sex, familial status, or disability. Illinois and many local ordinances add categories on top of that.
Chicago and Cook County Rules
Local ordinances in Chicago and much of suburban Cook County add requirements on top of state law. A procedurally defective eviction under the local rules can leave the landlord owing damages to the tenant.
City of Chicago
Chicago’s Residential Landlord and Tenant Ordinance sets longer notice periods for ending or not renewing a lease, scaling with the length of the tenancy:
- Under six months: at least 30 days’ written notice.
- Six months to three years: at least 60 days.
- Over three years: at least 120 days.
If the landlord fails to give the required notice, the tenant may stay for up to 60 days after notice is eventually given, or 120 days for tenancies over three years, on the same lease terms.13American Legal Publishing. Chicago Municipal Code 5-12-130 – Landlord Remedies These extended periods apply to non-renewals and rent increases; nonpayment and lease-violation evictions still run on the state five-day and ten-day framework.
Suburban Cook County
The Cook County Residential Tenant and Landlord Ordinance covers unincorporated Cook County and municipalities that have opted in. It calls for 60 days’ notice to end or not renew a lease; if that notice is not given, the tenant can stay up to 120 days after notice is eventually delivered. The ordinance also caps security deposits at one and a half times monthly rent and limits late fees to $10 on rent of $1,000 or less, plus 5% on any amount above $1,000.14Cook County, Illinois. Summary of Residential Tenant Landlord Ordinance The same 30-day filing deadline after a five-day or ten-day notice applies here.
Active-Duty Servicemembers
The federal Servicemembers Civil Relief Act protects active-duty military and their dependents. A landlord cannot evict a servicemember or dependents from a primary residence during military service without a court order. If the servicemember’s ability to pay rent has been materially affected by service, the court must stay the case at least 90 days on request, and may adjust the lease to balance the interests of both sides. Knowingly evicting a protected servicemember without an order is a federal misdemeanor.15Office of the Law Revision Counsel. 50 USC 3951 – Evictions and Distress The SCRA also lets a servicemember terminate a residential lease early on permanent change-of-station orders or deployment orders over 90 days, with the lease ending 30 days after the next rent due date following the termination notice.
Sealing an Eviction Record
An eviction filing can trail a tenant on background checks for years, even after a dismissal or a tenant win. Section 9-121 of the Code of Civil Procedure allows both discretionary and mandatory sealing. A judge may seal the record if the landlord’s case was so lacking in factual or legal basis that sealing is clearly in the interests of justice. Sealing is mandatory when the eviction was filed in connection with a foreclosure under Section 9-207.5, or when the case was dismissed under Section 9-106.16Justia. Illinois Code 735 ILCS 5 – Article IX, Eviction, Section 9-121 A tenant who thinks their case qualifies can ask the circuit court to seal it.