Home Business in McHenry County, IL (2026)
5 rules for unincorporated McHenry County, Illinois.
Verified from official government sources
Zoning & Home Occupation Permits
Running a home-based business in unincorporated McHenry County is allowed as an accessory use under UDO §16.56.050(I), but it stays strictly secondary to the home's residential use. The rules confine the business indoors, cap outside help at one non-household worker, and require every home occupation to be disclosed in any conditional use permit application.
Home Occupation Zoning Rules in McHenry County
Some RestrictionsMcHenry County UDO § 16.56.050(I)
I. Home Occupations. A home occupation is an accessory use, and shall be incidental and secondary to the principal use of the property for residential purposes. Home occupations shall meet all of the following requirements: 1. The home occupation shall be conducted entirely within a principal or accessory structure, or within an agricultural exempt structure as permitted in § 16.56.03...
Signage Rules
Home-business signs are tightly limited so the property still looks residential. In Crystal Lake a home occupation may display only an unlighted name plate or business sign of no more than one square foot. McHenry County allows a home occupation only where its existence is not apparent from outside the
Home Business Sign Rules
Some RestrictionsCrystal Lake UDO § 2-400C.3
Signage is restricted to an unlighted name plate or business sign with an overall size of no more than one square foot, per the provisions of Section 4-1000, Signs.
Customer Traffic Restrictions
Home-based businesses in unincorporated McHenry County may see clients on-site, but UDO §16.56.050(I)(5) requires every visit to be scheduled by appointment only. Combined with the hour restriction on business transactions and the ban on any activity perceivable beyond the lot line, the rule keeps client traffic predictable rather than capping visits at a fixed daily number.
Home Business Client Visits in McHenry County
Light RestrictionsMcHenry County UDO § 16.56.050(I)(5)
I. Home Occupations. 3. The operator of a home occupation must be a resident of the dwelling unit. 4. No more than one (1) person other than a member(s) of the household residing on the property may be working on-site at any one time. If the home occupation includes a dispatch component, employees to be dispatched are not to wait assignment or be dispatched from the property. ...
Cottage Food Operations
Illinois home kitchen and cottage food operations are legal. Crystal Lake expressly permits them under the state Food Handling Regulation Enforcement Act (410 ILCS 625/1 et seq.), allowing the sale of non-potentially-hazardous foods and direct sale of baked goods, provided the operation meets the home-occupation limited-use standards.
Cottage Food and Home Kitchen Rules
Some RestrictionsCrystal Lake UDO § 2-400C
Home kitchen operations and cottage food operations, as defined by the Food Handling Regulation Enforcement Act, as amended, are permitted within the City of Crystal Lake. The sale of non-potentially hazardous food by home kitchen operations and by cottage food operations is also permitted.
Home Daycare
Unincorporated McHenry County allows a home day care by right in every agricultural, estate and residential zoning district (A-1 through R-3) under UDO § 16.56.030(M). The operator must live in the home, cap enrollment at twelve children unless licensed for fewer, and keep the site 300 feet from hazardous land uses like gas stations or freight terminals.
Home Day Care Rules in Unincorporated McHenry County
Some RestrictionsMcHenry County UDO § 16.56.030(M)
M. Day Care Home. 1. The day care home operator must live in the dwelling to be used as a day care home. 2. Day care homes shall meet all state regulations including, but not limited to, caring for a maximum of twelve (12) children unless licensed for a lesser number, and minimum outdoor area requirements, licensing, and health, safety, and building code requirements. 3. No portion of a day car...
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