Home Business in Cook County, IL (2026)

4 county-level rules, plus city-specific rules for 8 cities in Cook County, Illinois.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Cook County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Zoning & Home Occupation Permits

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.

Cook County Home Business Zoning

Some Restrictions

Cook County Zoning Ordinance — Home Occupation Business Zoning

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 b...

Full ordinance details →Official source ↗

Signage Rules

Home business signage in unincorporated Cook County is restricted under the Zoning Ordinance. Home occupations must remain incidental to residential use, which limits or prohibits commercial signage. Sign permits required through Building and Zoning.

Cook County Home Business Signage

Some Restrictions

Cook County Department of Building and Zoning - Advertising Signs and Identification Devices Permit Requirements (Rev. 07/06/2015)

ADVERTISING SIGNS AND IDENTIFICATION DEVICES PERMIT REQUIREMENTS. All sign companies must be registered and bonded with Cook County. Complete the application in its entirety and include the property index number. Submit a plat of survey less than five years old; sealed and certified by an Illinois Registered Land Surveyor. Submit one (1) digitized, detailed, signed and sealed architectural draw...

Full ordinance details →Official source ↗

Customer Traffic Restrictions

Cook County Zoning Ordinance requires home occupations to be incidental to residential use, which limits customer traffic. Businesses generating excessive vehicle traffic or parking demands beyond residential norms may be in violation.

Cook County Home Business Customer Traffic

Some Restrictions

Cook County Building & Zoning Business Occupancy — Home Occupation

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 b...

Full ordinance details →Official source ↗

Home Daycare

Running a day care out of a house in unincorporated Cook County isn't a routine home occupation: the zoning ordinance lists day care centers and nursery schools as a special use in residential districts, needing Zoning Board of Appeals approval.

Cook County Home Day Care Special Use Permit

Significant Restrictions

Cook County Zoning Ordinance § 4.1.4

4.1.4. Special uses. A special use may be allowed subject to the issuance of a special use permit in accordance with the provisions of Article 13. ... The following special uses may be permitted in the R-1 District: ... D. Health, medical and care institutions. ... 3. Nursery schools, children's day schools, and day care centers.

Full ordinance details →Official source ↗