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Illinois Sublease Agreement

Create Illinois Sublease Agreement

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Prepare a legally conforming Sublease Agreement for Illinois that incorporates all required disclosures and clauses under Illinois landlord-tenant law. Fill in your details and download your completed, ready-to-sign Sublease Agreement as a professional PDF for $7.99.

Illinois law requires specific provisions in rental agreements that defends both rental property owner and occupant. While Illinois does not impose a statutory cap on security deposits, landlords must return deposits within 45 days. Illinois requires landlords to pay interest on security deposits. Illinois requires 7 specific disclosures in lease agreements.

Illinois Lease Requirements

Security Deposit Limit No statutory limit (statewide); Chicago cap is 1.5 months rent
Deposit Return Deadline 45 days
Deposit Interest Required Yes - Buildings with 25 or more units must pay interest on security deposits held more than 6 months, at a rate set annually by the Illinois Office of Banks and Real Estate
Late Fee Cap No statutory cap statewide
Grace Period No statutory grace period
Landlord Notice (Month-to-Month) 30 days
Tenant Notice (Month-to-Month) 30 days
Entry Notice No statewide statute; Chicago requires 2 days notice
Key Statute Illinois Residential Tenants' Right to Repair Act, 765 ILCS 720; Chicago RLTO, Chicago Municipal Code §§ 5-12-010 et seq.
Required Disclosures Lead-based paint disclosure (federal, pre-1978 housing); Radon disclosure required if landlord has knowledge of radon levels at or above 4 pCi/L (Illinois Radon Awareness Act); Carbon monoxide alarm disclosure; landlord must install CO detectors per Illinois Carbon Monoxide Alarm Detector Act; Utility disclosure: if utilities are shared or master-metered, landlord must disclose billing arrangement; Chicago RLTO requires disclosure of the RLTO summary to Chicago tenants; Chicago landlords must disclose any code violations cited in the past 12 months; Landlord name and address must be provided to tenant in writing

Illinois Sublease Agreement Checklist

Print this or save it as a PDF to use when preparing and signing the agreement.

Before you sign

  • Both parties read the entire agreement before signing.
  • Obtain written consent from the original landlord before subleasing.
  • Review the original lease to confirm subleasing is permitted.
  • Confirm the move-in date and key handover arrangements.
  • Verify the security deposit amount and accepted payment method.

Illinois rules to know

  • Landlord must return the deposit within 45 days of move-out.
  • Illinois requires landlords to pay interest on security deposits.
  • Late fee cap: No statutory cap statewide.
  • Landlord must give No statewide statute; Chicago requires 2 days notice before entering the unit.
  • To end a month-to-month tenancy, the landlord must give 30 days written notice.
  • To end a month-to-month tenancy, the tenant must give 30 days written notice.
  • Required disclosures: Lead-based paint disclosure (federal, pre-1978 housing); Radon disclosure required if landlord has knowledge of radon levels at or above 4 pCi/L (Illinois Radon Awareness Act); Carbon monoxide alarm disclosure; landlord must install CO detectors per Illinois Carbon Monoxide Alarm Detector Act; Utility disclosure: if utilities are shared or master-metered, landlord must disclose billing arrangement.

In the agreement itself

  • Full legal names of all landlords and tenants.
  • Complete property address, including unit number.
  • Lease term: start date, end date.
  • Monthly rent amount and the due date.
  • Security deposit amount and the conditions for deductions.
  • Reference to the original lease and its expiration date.
  • Confirmation of landlord consent to the sublease.
  • Late fee amount and the grace period, if any.
  • Pet policy, smoking policy, and guest policy.
  • Utility responsibilities (which party pays each utility).
  • Signatures of all parties.

Both parties should keep a signed copy. Illinois landlord-tenant law governs this agreement (Illinois Residential Tenants' Right to Repair Act, 765 ILCS 720; Chicago RLTO, Chicago Municipal Code §§ 5-12-010 et seq.).

What to Include in a Illinois Sublease Agreement

Every Sublease Agreement in Illinois should include the following vital provisions: identification of the lessor and lessee, a complete description of the rental property, the lease term and rent amount, security deposit terms including the amount and return deadline (45 days in Illinois), late fee policies that comply with state limits, utility responsibilities, rules regarding pets, smoking, and occupancy limits, maintenance and repair obligations, right of entry provisions, termination and renewal terms, and all state-required disclosures.

Illinois law requires landlords to disclose lead-based paint disclosure, radon disclosure required if landlord has knowledge of radon levels at or above 4 pci/l, carbon monoxide alarm disclosure; landlord must install co detectors per illinois carbon monoxide alarm detector act, utility disclosure: if utilities are shared or master-metered, landlord must disclose billing arrangement, chicago rlto requires disclosure of the rlto summary to chicago tenants. Chicago Residential Landlord and Tenant Ordinance (RLTO) provides additional tenant protections for Chicago rentals.

How to Complete a Illinois Sublease Agreement

To complete a Sublease Agreement in Illinois, start by gathering the necessary information: full legal names and addresses of all parties, the complete property address, the agreed-upon rent amount and payment terms, and the security deposit amount. You will also need to decide on house rules such as pet policies, smoking restrictions, and quiet hours.

Our platform walks you through each section with a guided form that only shows fields required for Illinois. Once you have filled in all details, you can preview the document, choose from five professional document styles, and download your completed Sublease Agreement as a PDF.

Frequently Asked Questions

What is the maximum security deposit in Illinois?
Illinois does not impose a statutory cap on security deposits. Landlords must return the deposit within 45 days after move-out, minus lawful deductions. Illinois requires landlords to pay interest on deposits.
Can a landlord charge a late fee in Illinois?
Yes. Illinois caps late fees at no statutory cap statewide. Late fee terms must be clearly stated in the lease.
How much notice must a landlord give before entering a rental in Illinois?
Illinois requires landlords to give No statewide statute; Chicago requires 2 days notice before entering a rental unit for non-emergency purposes. Entry without proper notice may violate tenant rights under Illinois landlord-tenant law. Emergency situations such as fire or flood allow immediate entry without advance notice.
Do you need your landlord's permission to sublease in Illinois?
In most cases, yes. Most leases in Illinois require written landlord consent before subleasing. Subleasing without permission can be grounds for eviction. The original tenant (sublessor) remains liable to the landlord for rent and damages even after subleasing - the subtenant's obligations run to the sublessor, not directly to the landlord.
What is the difference between a sublease and an assignment in Illinois?
In a sublease, the original tenant retains some interest in the lease (e.g., they plan to return) and a new person moves in temporarily. In a lease assignment, the original tenant transfers all rights and obligations to a new tenant permanently. Both typically require landlord approval in Illinois. A sublease agreement protects the original tenant if the subtenant fails to pay rent or damages the property.
Is a written lease agreement required in Illinois?
Illinois does not require written leases for all tenancies, but oral agreements are harder to enforce and provide less protection. Written leases are required for tenancies exceeding one year under the Statute of Frauds. A written Sublease Agreement clearly documents rent, security deposit terms, house rules, and each party's obligations - reducing disputes significantly.
Does Chicago have its own landlord-tenant law that overrides the lease?
Yes. Chicago has the Residential Landlord and Tenant Ordinance (RLTO), which applies to most Chicago rental units and provides stronger tenant protections than Illinois state law. The RLTO covers security deposit interest requirements, detailed itemization deadlines (21 days after move-out), landlord entry notice (2 days), and tenant remedies for habitability violations including rent withholding. Landlords who violate the RLTO can face significant penalties. The RLTO must be referenced in Chicago lease agreements.

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