Cook County, IL Home Business: Zoning & Home Occupation Permits (2026)
Key Facts
- Definition
- Incidental to residential use
- Filing
- Affidavit to Zoning Admin
- Fee
- No fee required
- Code
- Zoning Ord. 01-O-30
Summary
Cook County Zoning Ordinance (Ord. 01-O-30) defines home occupations as businesses practiced by a resident that are incidental and secondary to residential use. No fee is required for the home occupation affidavit filed with the Zoning Administrator.
Business Occupancy — A building shall not be constructed or occupied, an existing building shall not be expanded or otherwise altered or occupied, a new land use shall not be established and an existing land use shall not be changed until a certificate of occupancy is issued by the Department of Building and Zoning. Every certificate of occupancy shall state that the land use and occupancy of buildings or structures comply with all provisions of the Cook County Zoning Ordinance and that buildings or structures are habitable and in conformance with all applicable building regulations. [...] Home Based Business Occupancy — Home occupation is defined by the Zoning Ordinance as: An occupation or profession, practiced by a member of the family residing on the premises, and which occupation is clearly incidental and secondary to the residential use of the dwelling. Homeowner is required to submit an affidavit in order to establish a home based business.
Full Breakdown
The Cook County Zoning Ordinance (Ord. 01-O-30) permits home occupations in residential districts of unincorporated areas. A home occupation is defined as an occupation or profession practiced by a member of the family residing on the premises, which is clearly incidental and secondary to the residential use of the dwelling. The activity must not alter the residential character of the property. Homeowners must submit an affidavit to the Zoning Administrator to establish a home-based business, which can be sent by email. There is no fee required for this filing. Home occupations must comply with all zoning requirements including restrictions on signage, customer traffic, outdoor storage, and noise. The business must not generate excessive traffic or parking demands beyond what is normal for the neighborhood.
Violations & Fines
Home business violating zoning: $100–$1,000 fine per offense. Business activity that changes residential character may be ordered to cease.
Frequently Asked Questions
Can I run a business from home in unincorporated Cook County?
What restrictions apply to home businesses?
Sources & Official References
Other rules in Cook County
How Cook County compares: Easiest Cities to Run a Home Business·Compare Cook County to another location·View the Illinois home business overview
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