Lease Agreement requirements in Illinois
- Include the names and signatures of all tenants and the landlord or authorized property manager.
- State the lease term (fixed-term or month-to-month), rent amount, due date, and late fee policy.
- Specify the security deposit amount and the Illinois-mandated return timeline (within 45 days of lease end or surrender).
- Disclose required lead paint information for properties built before 1978 (EPA Lead-Based Paint Disclosure form).
- Provide a notice of radon risk and a disclosure of any known radon hazards, as Illinois law requires for residential leases.
- Incorporate mandatory Illinois Attorney General disclosures, such as the truth-in-renting pamphlet, if applicable (typically for large buildings).
How to create a Lease Agreement in Illinois
- Use an Illinois-specific lease template or form that includes all state-required clauses. Do not rely on generic templates.
- Fill in the property address, landlord and tenant contact info, and all financial terms (rent, deposit, utilities).
- Attach the required disclosures: lead-based paint, radon, and any local disclosures (e.g., Chicago’s residential landlord and tenant ordinance).
- Print the lease legibly or keep a digital copy. Both landlord and tenant must sign and date the lease.
- While Illinois law does not require notarization, having the signatures witnessed can help prevent fraud disputes. A witness signature is not mandatory but is prudent.
- Provide a copy of the signed lease to each party. Keep the original for your records.
What a Lease Agreement typically costs
Creating a lease agreement in Illinois generally costs nothing if you use a template, but attorney-drafted leases can cost $200-$500. Some online services charge a few dollars for downloadable, state-specific forms. Keep in mind that notarization, if you choose it, adds a small fee (typically $5-$15), but it's optional.
Download a state-specific Illinois residential lease template now and ensure your rental agreement meets all legal requirements.
Create your lease agreementIllinois Lease Agreement: Pre-Start Checklist
Before drafting a residential lease in Illinois, gather key details and understand state-specific requirements to avoid common pitfalls.
- Verify the property's legal description and exact rental address, including unit number.
- Confirm the tenant's identity and income; request proof (e.g., ID, pay stubs) and run a credit/background check if permitted.
- Review Illinois-specific rules: effective January 1, 2024, the state requires landlords to disclose if a property has a history of flooding or water damage.
- Ensure compliance with rent control prohibitions: Illinois prohibits local rent control (effective 1997), so you cannot include rent increase caps beyond your lease terms.
- Prepare a written lease with essential terms: names, start/end dates, rent amount and due date, late fees, security deposit conditions (must be returned within 45 days of lease end), and maintenance responsibilities.
- Include a disclosure for radon testing per Illinois law, and consider lead-based paint disclosure for pre-1978 properties.
- Have a wet ink signature or electronic signature valid under federal ESIGN Act; notarization is not required for residential leases but may be needed for certain addendums.
Frequently asked questions
Does an Illinois lease agreement need to be notarized or witnessed?
No. Illinois law does not require a residential lease to be notarized or witnessed to be valid. However, having a witness or notary can make the document easier to enforce in court, especially if a signature is disputed.
What disclosures are mandatory in an Illinois lease?
Landlords must provide a lead-based paint disclosure for pre-1978 properties, a radon disclosure, and in some municipalities (like Chicago) a summary of local tenant rights. For buildings with 5+ units, a Truth in Renting brochure must be attached.
Can a landlord charge any late fee in Illinois?
Illinois does not cap the amount of late fees for residential leases, but they must be 'reasonable' to be enforceable. If the fee is excessive (like 20% of rent), a court may void it. Also, notice of the fee must be clearly stated in the lease.
How long does a landlord have to return a security deposit in Illinois?
Within 45 days after the lease ends and the tenant surrenders the property, the landlord must return the full security deposit or provide an itemized statement of damages. Failure to comply can result in the landlord owing double the deposit.