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Form a Business

Where required.

Municipal Code of Chicago § 18-29-914.1
in effect
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18-29-914.1 Where required. Soil and waste stacks in buildings having more than 10 branch intervals shall be provided with a relief vent at each tenth interval installed, beginning with the top floor.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2692535Fetched: 10/24/2026

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

18-29-914.1 | Corpus