Simplify your subleasing process with our Chicago Sublease Agreement. Easily edit, fill and sign for free with Lumin.Can anyone guide me or recommend any templates for a sublease agreement? Thanks so much in advance. In Chicago, landlords must approve reasonable sublease requests unless the property is owneroccupied with six or fewer units. Luxury Living Chicago Realty can help you sublet your apartment. It's important to call a licensed broker or real estate agent that can discuss the process. Chicago, IL 3,900 sq ft. Building - For Sublease. In addition to the CARspecific purchase and sale agreements, CAR members also have access to the MultiBoard Residential Real Estate Contract.