- Home occupation permit required:
- Yes
- Details:
- Jefferson County Code of Ordinances Section 400.230 requires a Home Occupation Permit. Requirements include: applicant must reside at the location; no more than one on-premises employee (besides residents); home occupation cannot exceed 1/3 of gross floor area; no tandem axle vehicle or outdoor storage. Application must be submitted to Jefferson County Planning Division. Note: Arnold, Herculaneum, and Festus (cities within Jefferson County) have their own rules.
- Home kitchen:
- Missouri state law (§196.298) permits home kitchen production of nonperishable baked goods, canned jams/jellies, and dried herbs. Jefferson County requires a home occupation permit per Section 400.230 of the Jefferson County Code of Ordinances. The business must be secondary to residential use. State law expressly prohibits local health departments from regulating cottage food production (§196.298(3)(1)).
Last verified 2026-05-05. Not legal advice.
