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Illinois rental documents

State-specific leases, notices, checklists, and addenda for a Illinois rental. Legal notes last reviewed 2026-08-15. LeaseGen.io is not a law firm.

Deposit cap

No statutory cap

Deposit return

45 days

Pay-or-quit

5 days

Pet deposit

No statewide cap

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• Illinois Residential Lease AgreementA fixed-term residential rental contract built around the property’s state rules.
• Illinois Month-to-Month Rental AgreementA periodic tenancy that continues until either party gives proper notice.
• Illinois Sublease AgreementAn agreement for a tenant to rent all or part of the premises to a subtenant.
• Illinois Roommate AgreementA private agreement among occupants who share a rental. It does not replace the master lease.
• Illinois Lease AmendmentA short writing that changes named terms of an existing residential lease.
• Illinois Move-In Condition ChecklistA condition inventory completed at move-in. It is not a lease.
• Illinois Eviction NoticeA written pay-or-quit, cure-or-quit, or termination notice. It is not a court summons and does not authorize a lockout.
• Illinois Pet AddendumAn add-on to an existing lease that names the animals, pet deposit or rent, and care rules. Assistance animals are not pets.
• Illinois Security Deposit ItemizationA written accounting of deposit deductions and any refund due after move-out.
• Illinois Notice of Intent to EnterWritten notice that the landlord intends to enter at a stated time for a lawful purpose.
• Illinois Lease Renewal OfferA written offer to renew an existing residential lease for a new term and rent.
• Illinois Notice of Rent IncreaseWritten notice that rent will change on a stated date. It is not an eviction and not a substitute for a signed amendment or renewal.
• Illinois Guarantor / Co-Signer AddendumAn add-on to an existing lease in which another person guarantees the tenant’s rent and other lease duties. It does not make the guarantor a tenant.
• Illinois Rent ReceiptA written record that rent was paid for a stated period. It is not a lease and not a waiver of other amounts still due.
• Illinois Security Deposit ReceiptA written record that a security deposit was received. It is not the itemized accounting due after move-out.