Illinois (IL) lease form
Quick answer
Illinois does not require a written lease statewide, but landlords must provide radon disclosure, shared-utility formulas, and starting January 2026 a Safer Homes Act summary on every lease. Chicago and Cook County add additional requirements including an RLTO summary and bed bug brochure.
Revun generates a Illinois-ready lease with the required disclosures and clauses built in, then handles e-signature, rent, and renewals on the same platform.
Landlords must provide the IEMA 'Radon Guide for Tenants' pamphlet and disclose any known radon test results for units on the second floor or below (420 ILCS 46).
As of January 1, 2026, every residential lease must include a state-issued multi-page Summary of Rights under the Safer Homes Act disclosing tenant protections for domestic violence victims.
If utilities are shared among tenants, the landlord must disclose in writing the formula used to allocate each tenant's share (765 ILCS § 740/5).
Landlord must disclose their full name and address to enable tenant communications and legal notices (765 ILCS 705/1).
Federal law requires disclosure of known lead hazards and the EPA pamphlet for all pre-1978 residential units.
General information, not legal advice. Governing statute: Illinois Landlord and Tenant Act (765 ILCS 705); Radon Awareness Act (420 ILCS 46). Confirm current requirements or consult an attorney before finalizing a lease.
Illinois lease FAQ
No statewide mandate exists, but written leases are the only way to satisfy Illinois's 2026 Safer Homes Act attachment requirement and radon disclosure duties.
As of January 1, 2026, every Illinois residential lease must attach a state-issued Summary of Rights informing tenants of early termination and other protections available to domestic violence and sexual violence survivors.
Yes. Chicago and Cook County landlords must attach an RLTO summary and provide the Chicago Department of Public Health bed bug brochure with every lease.
Yes. Landlords must provide the IEMA 'Radon Guide for Tenants' pamphlet and disclose any known radon hazard test results for units on the second floor or below under 420 ILCS 46.
