Use our free Illinois room rental agreement template to rent a specific room within the property from the principal tenant. This Room Rental Agreement (this "Agreement") is made as of _____ day of. ,.Rent-to-Own Lease Agreement – Contract used for a typical rental arrangement with the added course of action to purchase the residence. 1. Identify the Principal Tenant and provide their details. A room rental agreement is a legally binding contract between a tenant and a sub-tenant, the person to whom the original tenant wants to rent a room. Utilize this room rental agreement Illinois template to create a detailed and practical renting contract. An Illinois lease agreement is a prevalent contract performed during the transfer of rights related to a real estate property (apartment, condo, house, etc.). A sample lease for tenants and landlords that you can use to create your own version. Roommate (Room Rental) Agreement. A roommate agreement is a rental contract between the individuals living together that outlines the rules for the property.