Lake County, IL Home Business: Zoning & Home Occupation Permits (2026)
Key Facts
- Approval required
- Zoning certificate
- Max floor area used
- Under 50% of dwelling
- Nonresident employees
- Maximum of two
- Signs allowed
- None
- Customer hours
- 8 a.m.-8 p.m., 6/day max
Summary
Unincorporated Lake County requires a zoning certificate for home occupations, capped at under 50% of dwelling floor area with two nonresident employees max.
Home occupations that comply with the regulations of this section shall be allowed as an accessory use to any allowed residential use... A home occupation shall occupy less than 50% of the floor area of the principal dwelling unit... Approval of a zoning certificate shall be required. A maximum of two nonresident employee shall be allowed in conjunction with a home occupation.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-15: Supplement contains: Local legislation current through Ord. 26-0618, passed 6-9-2026 | State legislation current through ILCS Pamphlet 2025 #5).
Full Breakdown
In unincorporated Lake County, home occupations are an accessory use to a residential dwelling and require approval of a zoning certificate under County Code § 151.113(E). The business must stay under 50% of the dwelling's floor area, employ no more than two nonresident employees, be run by a full-time resident, post no signs, and confine all activity and storage inside the principal dwelling. Customer visits are capped at six per day between 8 a.m. and 8 p.m. Vehicle repair, animal boarding, dispatch centers, restaurants, and contractor storage yards are barred outright. This applies only outside the county's many incorporated cities and villages, which zone home businesses under their own codes.
Violations & Fines
Operating without an approved zoning certificate, exceeding the 50%-of-floor-area cap, posting signs, storing materials in a detached garage, or running a prohibited use (vehicle repair, animal boarding, food service) can draw a zoning enforcement action and certificate denial or revocation.
Frequently Asked Questions
Do I need a permit to run a home business in unincorporated Lake County?
Can employees come to my house for a Lake County home occupation?
Does this apply inside Waukegan or Highland Park?
Sources & Official References
Other rules in Lake County
How Lake County compares: Easiest Cities to Run a Home Business·Compare Lake County to another location·View the Illinois home business overview
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