Amends the Landlord and Tenant Act. Prohibits a landlord from imposing a move-in fee. Provides that a landlord may not demand any charge for the processing, reviewing, or accepting of an application, or demand any other payment, fee, or charge before or at the beginning of the tenancy. Exempts entrance fees charged by nursing homes or similar institutions. Prohibits a landlord from renaming a fee or charge to avoid application of these provisions. Limits fees for the late payment of rent in certain situations. Provides that any provision of a lease, rental agreement, contract, or any similar document purporting to waive or limit these provisions is void and unenforceable as against public policy. Amends the Illinois Human Rights Act. Provides that State policy is that access to housing is a fundamental human right in preventing discrimination based on familial status or source of income in real estate transactions. Changes the definition of "source of income"by stating that the definition prohibits a person engaged in a real estate transaction from requiring a credit check before approving another person in the process of renting real property or requiring a move-in fee in lieu of a security deposit or in addition to a security deposit.