Existing structures, systems, and devices.
Municipal Code of Chicago § 14A-1-102.5
in effect14A-1-102.5 Existing structures, systems, and devices.
The lawfully-established use and occupancy of any building or other structure existing on the effective date of a given provision of the Chicago Construction Codes continues to be lawful, even if the building or other structure does not conform to requirements for a new building of similar use or occupancy. The lawfully-established use or operation of any building system or device existing on the effective date of a given provision of the Chicago Construction Codes continues to be lawful, even if the system or device does not conform to requirements for a new system or device of the same type.
Exception: The Chicago Minimum Requirements for Existing Buildings, and provisions of the Chicago Construction Codes referenced in that code, apply to new and existing structures both prospectively and retrospectively.
(Amend Coun. J. 6-17-26, p. 45214, Art. IV, § 6)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2660396Fetched: 10/24/2026