Landlords can't unreasonably refuse sublease requests. Reasons like poor credit or past evictions can be considered.Send a clear written notice; Fill out the forms; Serve the tenant; Attend the trial; Wait for judgment. Illinois tenants are generally allowed to sublet, unless their lease specifically prohibits it. My landlord found out I sublease my unit after she showed up unannounced. Learn about the rights and responsibilities of renters and landlords under Chicago law and learn about valuable resources to promote housing stability. Domu's free 5 day notice to vacate template helps Chicago landlords start the eviction process with minimal stress. Eviction is a court process for removing tenants and other occupants from rental property. In Illinois, only the county sheriff can perform evictions. This pamphlet provides general information about being a tenant in Illinois.