Creates the Corporate Ownership of Residential Property Act. Provides that, beginning January 1, 2027, a company to which the Act applies is prohibited from owning more than 500 residential properties in Illinois, including residential property held by affiliated entities or persons. Requires each company owning more than 500 residential properties to register annually with the Department of Financial and Professional Regulation. Requires each company owning more than 200 residential properties but less than 500 residential properties to provide to the Department a list of all residential properties owned, a disclosure of all affiliated entities and beneficial owners, and an affirmation of compliance with the Act. Requires the Department to enforce the Act. Grants the Department rulemaking powers. Limits home rule powers. Makes other changes. Effective immediately.