Simplify your subleasing process with our Chicago Sublease Agreement. Easily edit, fill and sign for free with Lumin.This resource provides an example of what a sublease in Illinois looks like. Download. The subtenant agrees to assume all of the obligations and responsibilities of the sublessor under the original lease for the duration of the sublease agreement. A sublease agreement is a rental contract used for rerenting a currently leased unit to a new tenant. Chicago law requires landlords to allow tenants to sublease their apartments if requested. Here's what else you need to know about subleasing in Chicago. Clarify private housing applications and lease requirements, and discover safety tips for finding legitimate rentals. A clear sublease agreement should detail crucial components to ensure a smooth arrangement. How to fill out the Chicago Residential Lease Agreement for Renters?