Vallejo, CA Home Business: Signage Rules (2026)

Section 16.321.04(K), Signage, states the rule in full: there shall be no signs, name plates or other forms of advertising such as products displayed on the premises including windows in which a home-based business is conducted, and window display of materials associated with the home-based business is prohibited. The chapter draws no distinction by business type or sign size; a single small nameplate identifying the business is treated the same as a full advertising sign, both are banned. The restriction sits alongside the chapter's other standards preserving residential appearance, including Section 16.321.04(C)'s bar on changing the dwelling's residential character and Section 16.321.04(F)'s bar on alterations not customarily found in similar dwellings, so signage is one piece of a broader effort to keep a home-based business invisible from the street.

The prohibition is enforced the same way as the rest of Chapter 16.321.04: a violation is treated as a public nuisance under Section 16.321.04(O), subject to the abatement procedures in Chapter 16.615, Enforcement and Abatement, rather than a routine citation under the city's general sign ordinance in Chapter 16.509.