Lake County Zoning Code § 27.3 Conditions required of uses

(a) Accessory residence to a commercial use:
1. The accessory residence shall be constructed concurrently with, or subsequent to the construction of the commercial building and shall be an accessory use to the principal commercial building or use in terms of duration or size.
2. A combination office, accessory residence, or an accessory residence utilized as an office may be located in the front one-half of the lot, subject to the development standards of the base district. (Ord. No. 1749, 7/7/1988)
1. If detached, the accessory residence shall be located on the rear one half (1/2) of the lot and at least ten (10) feet from any commercial building or dwelling on the same lot, or any adjacent lot. If attached, the accessory residence shall be to the rear of the principal commercial building or on a second or higher floor.
2. The accessory residence must be provided with a minimum of two hundred (200) square feet of usable private open space, in the form of enclosed yard, decks, or balconies, not including any required yard area.
3. Fire and vehicular access to the accessory residence of at least twelve (12) feet in width must be provided from a street or alley of a minimum width of twenty (20) feet.
4. The accessory residence must be provided with a separate means of ingress and egress to the ground outside of the building when the accessory residence is an integral part of a business structure.
5. The accessory residence shall comply with the development standards of the zoning district and the performance standards of Article 41

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