Riverside County generally prohibits any exterior signage advertising a home occupation. Ordinance 348 Section 18.28 requires that home occupations produce no external evidence of the business, and Ordinance 521.2 (the County Sign Ordinance) does not authorize commercial signage on residentially zoned parcels.
Because home occupations must remain clearly incidental to the residential use of the property, Riverside County Ord. 348 § 18.28 explicitly forbids any exterior display, sign, or advertising visible from the street that would indicate a business is being conducted on the premises. This applies to wall signs, yard signs, banners, window signs, illuminated signs, and vehicle signage parked in view. The County Sign Ordinance (Ord. 521.2, later recodified into Article XIX of Ord. 348) regulates permissible signs by zone; residential zones (R-1, R-A, R-R, etc.) do not include home occupations as a sign-eligible use. Nameplate signs identifying the occupant (not the business) up to a small area (typically under 2 square feet) are allowed. Real estate, political, and address signs have separate allowances. Violation of the signage rule is a common trigger for home occupation complaints and can result in a Notice of Violation from Code Enforcement, with administrative citations escalating from $100 to $500 per occurrence under the County's general enforcement framework.
Specific penalty amounts for this ordinance are not published in a publicly accessible fine schedule. Contact Riverside County code enforcement directly for current fines, enforcement procedures, and hearing options.
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