Concord, CA Home Business: Signage Rules (2026)

Concord's home-business signage rule is absolute. The Planning Division's Home-Based Business Permit and Acknowledgement Form, reproducing Section 18.200.100(8), states: 'The residential appearance of the property at which the home-based-business is conducted shall be maintained, and no exterior indication of a home-based-business shall be permitted, including commercial advertising signs or window displays.' Read together with paragraph 11 (Nuisances), which requires the business to be 'invisible to the neighborhood,' the prohibition covers wall signs, yard signs, A-frames, banners, window decals, illuminated signs, sandwich boards, sample displays, and any structure erected to identify or advertise the business. The vehicle rule in paragraph 6 reinforces the no-identification principle by separately barring any business vehicle that 'give[s] the appearance that a business is being conducted at the location' - so vinyl-wrapped or logo-painted commercial vehicles parked in the driveway can trigger the same enforcement as a yard sign. Section 18.200.100's signage ban operates independently of Chapter 18.180 (Sign Standards), which is the general citywide sign code. Because the prohibition is a use restriction in the residential standards chapter rather than a sign-code regulation, there is no master sign program, no minor variance, and no administrative exception pathway that authorizes on-site identification of a home occupation. Operators may continue to use ordinary residential address numbers and standard mailbox markings; they may distribute business cards, advertise online, and operate registered fictitious business names under California Business & Professions Code Section 17910 - but they may not display the business name, logo, or any commercial signage at the dwelling. The acknowledgement form expressly notifies the operator that any violation 'will result in possible fines, penalties or legal action.'