Once an applicant is approved, the next step is reviewing the lease. A lease is an agreement allowing a tenant to use the landlord's property.The lease agreement should have a full and complete description of the property that is being included as part of the lease. You should fill out the Illinois apartment lease once you are ready to sign a lease contract. Unlock the secrets to a seamless Illinois rental application process with our expert guide for landlords and property managers. In this article, we provide an overview of Illinois rental applications and a free downloadable form that you can use for your rentals. Staff from Off-Campus Services or the Students' Attorney can review your lease and help you understand what it means before you sign it. This pamphlet provides general information about being a tenant in Illinois. You should consult with an attorney or your municipality or county. Get expert advice and clear guidance for tenants and landlords.