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What is an Illinois Sublease Agreement?

In Illinois, a sublease agreement is a legal document that spells out the terms of an agreement between two tenants: a sublessor and a sublessee. This type of agreement is often used when the sublessor (the original tenant) can no longer live in the rental but does not want to break the lease. Instead of breaking the lease, potentially incurring hefty fees, the tenant would seek to sublease the apartment. Once the sublessor has found a sublessee to live in the rental, the two parties may move forward with the sublease agreement. It is important for the sublessor to stay in communication with the sublessee as the original tenant’s name will remain on the lease through the duration of the sublease agreement. This means that if the unit is damaged or if any rent is paid late, the sublessor will be held responsible.

Illinois Sublease Laws

Illinois Tenant Landlord Laws provide provisions for tenants to sublease their units unless their lease clearly prohibits it. If a tenant’s lease doesn’t prohibit subletting, the tenant has the right to do so without notifying the landlord (a legal precedent set by Cole v. Ignatius)

A Sample Illinois Sublease Agreement with Examples of Each Step

A sublease is an agreement between the original tenant (sublessor or sublandlord) under a lease agreement for a rental unit and a new individual (sublessee or subtenant) who does not have a direct connection with the original lease agreement. The sublease agreement is tied to and incorporates the original (master) lease. According to court decisions/case law in Illinois, a tenant has the right to enter into a sublease if the original lease does not forbid it, includes language that allows it, or contains no language regarding subletting. Under local law in Chicago, "reasonable" subletting is allowed irrespective of the language in the original lease. Yet, if the original lease does not contain language giving the tenant permission to enter into a sublease, the original tenant (sublessor) should obtain written permission from the landlord to do so as it would help ensure that they cover all of their bases and prevent any potential problems. The original tenant (sublessor) is still bound by all the requirements/obligations under the original (master) lease agreement.

An Illinois sublease agreement should include the following sections:

  • Name of Sublessor (Sublandlord)/Name of Sublessee (Subtenant)/Name of Original Landlord: Both parties to the sublease agreement should be identified by name in the document, as well as any co-sublessors or co-sublessees. In addition, the sublease agreement in Illinois should include the name of the landlord, as well as contact information for the landlord or manager of the property.
  • Names of All Other Adult Occupants: The sublease agreement should include the names of all adult persons who will be residing in the unit.
  • Description/Site of Rental Unit: This section should include the complete address and description of the rental unit as it appears in the original (master) lease, as well as a list of items in the unit that are covered by the sublease agreement.
  • Sublease Agreement Term: This section defines the length of the sublease agreement: the precise start date and end date must be noted.
  • Amount of Rent/How Paid: This section includes the amount of rent to be charged, whether it will be paid by the week or by the month, the day the rent is due, how the rent will be delivered to the sublessor (e.g., by a mailed check), if there will be a fee for a late payment or insufficient funds, and the amounts of those fees.
  • Utilities/Maintenance and Repair: This section delineates the specific utilities and maintenance/repair items that are the responsibility of the sublessor and those that are the obligations of the sublessee.
  • Damages/Liability: This section declares the sublessee's liability for damages to the sublessor, who is still responsible for any damages that affect the landlord under the original (master) lease.
  • Security Deposit/Pet Deposit (if any): This section states the amount of the security deposit under the sublease agreement and that it is given to the sublessor. An additional pet deposit may be charged, as can a deposit for any use of the rental unit that poses a risk to the property. In Illinois, there is no limit to the amount of the security deposit. The security deposit must be refunded within 45 days after the tenant/sublessee vacates; if there are lawful deductions, the security deposit, less those deductions, must be refunded within 30 days after the tenant/sublease vacates.
  • Disputes: This section states the method(s), short of legal action, by which the sublessor and sublessee will resolve any disputes that arise.
  • Events of Default and Remedies: This section defines the actions on the part of the sublessee that will constitute a default or breach of the sublease agreement and the options available to the sublessor in those situations, including legal action.
  • Attorney's Fees: This section states that if there is a breach of the sublease agreement or legal action taken by either party, the party who secures a judgment can recover attorney's fees and court costs.
  • Disclosures: Applicable state law may require that certain disclosures be made to the sublessee in the sublease agreement, in addition to the federal Environmental Protection Agency (EPA) requirement to disclose the possible danger of lead-based paint if the structure was built prior to 1978. In Illinois, a written Lead-Based Paint Disclosure is required if the rental unit in question was constructed prior to 1978, informing the sublessee that the premises could contain lead-based paint. A notice regarding radon danger must also be given.
  • Master Lease/Termination of Master Lease: This section states that the original (master) lease is incorporated in its entirety in the sublease agreement; all of the provisions and requirements/obligations in the master lease are deemed part of the sublease agreement. The master lease should be attached. This section also states that the sublease agreement will terminate simultaneously if the master lease is terminated.
  • Rules and Regulations: This section states the activities that are prohibited and/or regulated, including illegal activities, smoking, and pets.
  • Consent of Landlord: This section states the manner in which the landlord is giving consent to the sublease agreement, should the original (master) lease not include consent.
  • Governing Law: This section states that the sublease agreement is governed by Illinois state law, including all the provisions/requirements in the applicable state code sections.
  • Entire Agreement: This section states that the sublease agreement represents the complete agreement between the sublessor and sublessee; the sublease agreement may not be altered except by mutual agreement of the parties in writing.  
  • Dated Signatures: This section includes the dated signatures of the sublessor (and any co-sublessors), sublessee (and any co-sublessees), and the landlord, who hereby gives written consent to the sublease agreement.

Sublease Resources for Tenants in Illinois

Download a PDF or Word Template

Illinois Sublease Agreement

Illinois Lease Agreement

Illinois Month-to-Month Lease Agreement

Illinois Rent Receipt