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

License required.

Municipal Code of Chicago § 4-336-010
in effect
Sign in to generate a plain English summaryAsk Belisarius Agent
4-336-010 License required. It shall be unlawful for any person to engage in the business of plumbing contractor, as defined in Section 4-332-020, or hold themself out as a plumbing contractor without being licensed in accordance with this chapter. (Added Coun. J. 12-9-92, p. 25465; Amend Coun. J. 1-24-24, p. 8615, § 4)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2638178Fetched: 10/24/2026

Starting a business in Illinois? Illinois LLC guide: costs and requirements

4-336-010 | Corpus