For AI agents: read the machine-readable documentation index at /llms.txt or the single-file full reference at /llms-full.txt.
Form a Business

§ 18-28-401.3 — When required

Municipal Code of Chicago (2026 S-74, current through Council Journal of June 17, 2026) · Municipal Code of Chicago § 18-28-401.3

Corpus is an independent public-information project, not the official City of Chicago website. Stable reference URL

18-28-401.3 When required.

Ventilation shall be provided during the periods that the room or space is occupied.