Understanding Your Lease Rights in Illinois

Illinois state law sets a short list of lease rules that apply everywhere: since January 1, 2026, every written lease and renewal must start with the state's Summary of Rights for Safer Homes, a clause excusing the landlord from liability for its own negligence is void, and a landlord must give at least 30 days' written notice to end a month-to-month tenancy. Chicago's Residential Landlord and Tenant Ordinance (RLTO) adds more, including its own summary attached to each lease, a duty to accept a reasonable subtenant, and 30 to 120 days' notice before a landlord can end a tenancy, refuse to renew, or raise the rent. Under the Safe Homes Act, a tenant facing a credible threat of domestic or sexual violence at the unit, or who experienced sexual violence there, can move out early and owe no rent for the time after leaving.

Which Illinois lease rules apply to you?

State law covers every residential lease in Illinois. A lease longer than 1 year must be in writing; a shorter one can be oral, and landlord-tenant laws apply to it the same way. On top of state law, local ordinances in Chicago, suburban Cook County, Evanston, Oak Park, and Mount Prospect set their own notice periods for ending or not renewing a lease, and Chicago, DeKalb, Oak Park, and Urbana have their own subletting rules.

Chicago's RLTO covers most rental units in the city. It does not cover owner-occupied buildings with six or fewer units, most hotel and rooming house units, dorms, shelters, employee housing, or owner-occupied co-ops, though its notice rules for ending a tenancy still apply to those small owner-occupied buildings. For the basics every lease covers, see understanding your lease terms.

What must come with an Illinois lease?

Summary of Rights for Safer Homes. Since January 1, 2026, the landlord must attach the Illinois Department of Human Rights (IDHR) Summary of Rights for Safer Homes as the first page of every written residential lease, new or renewal, and get each tenant's signature on the acknowledgment at the bottom of each page. The summary explains the housing rights of survivors of domestic or sexual violence, including stalking. If the landlord fails to provide it, you can recover the greater of $100 or your actual damages up to $2,000, plus court costs and reasonable attorney's fees if you win.

Flood disclosure. Before you sign, the landlord must tell you in writing whether the property is in a FEMA Special Flood Hazard Area (the 100-year floodplain) and, if it knows, whether and how often the property or its parking areas have flooded. For a garden, basement, or first-floor unit, it must also disclose any flooding in the last 10 years. The disclosure goes in the lease or renewal, signed by both of you.

• If the landlord left it out and you later learn the property is in the floodplain, you can end the lease by written notice within 30 days of finding out, and the landlord must refund rent and fees you paid in advance within 15 days.
• If an undisclosed flood damages your belongings or makes the unit unlivable or unreachable, you can end the lease within 30 days of the flood and sue for your property losses.

Lead and radon. Federal lead paint disclosure rules apply to homes built before 1978. Under the Illinois Radon Awareness Act, before you lease a unit on the second floor or lower, a private landlord must give you the Illinois Emergency Management Agency's "Radon Guide for Tenants," copies of any available records or reports showing a radon hazard in the unit, and the "Disclosure of Information on Radon Hazards to Tenants" form.

Chicago's RLTO summary. In Chicago, the landlord must attach the city's RLTO summary to each written lease and renewal, and give you a copy if your agreement is oral. If the landlord fails to, the ordinance lets you end the lease by written notice specifying a termination date no later than 30 days after the notice date.

Payment terms. On leases signed after January 1, 2024, a landlord cannot require you to pay rent electronically, such as by automatic bank debit. On leases signed after January 1, 2025, if its online portal charges a transaction fee, it must also take a paper check, cash, or another fee-free method.

Fee rules starting in 2027. For leases signed after January 1, 2027, every required fee must appear on the first page of the lease, or you do not owe it, and the lease must say whether utilities are included in the rent. Application fees will be capped at $50, unless a third-party background check costs more and the landlord bills you with receipts within 14 days. Fees for renewing a lease, after-hours maintenance requests, routine maintenance, and move-in or move-out walk-throughs will be banned. Owner-occupied buildings with 6 or fewer units are exempt.

Which lease clauses are void in Illinois?

Statewide, the Landlord and Tenant Act voids any lease clause that exempts the landlord from liability for injuries or property damage caused by its own negligence, or that of its agents or employees, in operating or maintaining the property. A clause that waives or changes your rights under the Safe Homes Act is also void.

In Chicago, the RLTO bars any lease clause in which you agree to waive or give up rights, remedies, or obligations under the ordinance. A clause that says you give up the right to a reasonable sublease, or accepts shorter notice than the RLTO requires, cannot be enforced against you.

How much notice ends or renews an Illinois lease?

The landlord's written notice to end a month-to-month tenancy or not renew a lease depends on where you live:

The suburban Cook County and Oak Park rules above exclude owner-occupied buildings with six or fewer units. They also exclude a single-family home or condo if it is the owner's only rental, the owner personally manages it and is not a corporation, and the owner or an immediate family member lived there for at least 1 month in the 12 months before it was marketed. The owner must disclose the exclusion in marketing and application materials before accepting fees.

If your lease renews automatically for another year, the landlord's notice must be at least 60 days, given within the 4 months before that 60-day window. In Chicago, the same 30, 60, or 120 days of written notice applies before a rent increase, and the rent cannot go up during a written lease term. If you stay past a valid notice, the landlord has to file an eviction case; Illinois eviction protections explains that process.

Your notice. To end a month-to-month tenancy, give the landlord written notice at least one full rental period ahead, meaning before your last month starts. For a lease with a set term, follow its notice and renewal terms; if it ends on a set date with no renewal option, you usually do not need to give notice, but confirm with the landlord in writing.

Renewal decisions. A Chicago landlord cannot require you to decide on a renewal more than 90 days before your lease ends. Suburban Cook County and Oak Park set that limit at 60 days, and Evanston at 45 days.

Staying on. If the landlord accepts rent after the end date in its notice, a new lease is created, usually month-to-month. A private landlord does not have to give a reason for not renewing, but it cannot end your lease to retaliate for protected conduct, such as complaining about code violations, asking for repairs the law or lease requires, or joining a tenants' union.

Can you sublet or add a roommate?

Outside the cities with their own rules, your lease decides. Some leases ban subleasing, which means renting your unit or a room to someone who pays rent to you, and if you sublet anyway, both you and the subtenant can face eviction. Tenants who pay rent with a Housing Choice Voucher (Section 8) cannot sublease.

Chicago, DeKalb, Oak Park, and Urbana require landlords to allow subleasing in some situations. In Chicago, unless you live in an owner-occupied building with six or fewer units, the landlord must accept a reasonable sublease you propose and cannot charge you extra fees for it. If you leave a Chicago unit early, the landlord must make a good-faith effort to re-rent it at a fair rent, meaning the rent charged for comparable units in the building or neighborhood:

• If it re-rents, you owe the rent due from your early departure through the original lease end date, including any vacancy period, minus replacement rent the landlord actually receives for that period.
• If it tries in good faith and cannot re-rent, you owe the rent for the rest of the lease, plus its reasonable advertising costs.

Put any sublease request in writing, give the landlord the same application details it asks of other renters, and keep its reply. Subletting your apartment covers the risks of being the person whose name stays on the lease.

How can you end an Illinois lease early?

Safe Homes Act (765 ILCS 750). You are not liable for rent for the time after you move out in either of these situations:

1. You or a household member faced a credible, imminent threat of domestic or sexual violence at the unit, and you gave the landlord written notice, before or within 3 days of moving out, that this is why you left.
2. You or a household member experienced sexual violence on the premises, and you gave written notice before or within 3 days of moving out stating that reason and the date, along with at least one form of evidence: medical, court, or police records, or a statement from an employee of a victim services or rape crisis organization your household went to for help. The violence must have occurred no more than 60 days before your notice, unless hospitalization or a similar reason kept you from giving notice sooner.

You still owe rent for the time before you gave notice and moved out. The Act does not cover public housing, but it does cover tenants using a Housing Choice Voucher.

Military orders. If you are an Illinois resident serving in the U.S. armed forces or the National Guard, you, or a family member who lives with you, can end the lease if you enter military service for more than 29 consecutive days after signing it, or receive orders for a permanent change of station or a deployment of at least 90 days. Give the landlord a copy of the orders. The lease ends 30 days after the landlord gets your notice or, if you pay rent monthly, 30 days after the next rent due date. Example: you deliver notice on June 10 and rent is due July 1, so the lease ends July 31. The landlord must refund any unearned prepaid rent and your deposit, minus actual damages or repairs; Illinois security deposit rights explains the return deadlines.

Other reasons. Unless a legal protection applies or the landlord agrees, you owe rent for the rest of the lease. State law requires the landlord to take reasonable measures to reduce the damages it can collect from you, such as trying to re-rent the unit (735 ILCS 5/9-213.1), and Chicago's re-rent rule above is more specific. Check your lease for an early termination clause, which may let you end it for a set payment. Repair problems can also justify ending a lease after the right written notice, such as a 14-day repair letter; your right to habitable housing in Illinois explains those steps.