Stanislaus County, CA Home Business: Signage Rules (2026)

Signage for a home occupation in unincorporated Stanislaus County is governed by Zoning Ordinance Section 21.94.020(H), which states there shall be no change in the outside appearance of the building or premises, or any visible evidence of the conduct of the home occupation, other than one sign not to exceed two square feet. “Visible evidence” is defined to include, but not be limited to, any vehicles associated with the home occupation (with limited exceptions for permitted contractor and trucking uses). Section 21.94.020(I) further provides that there shall be no advertising — including phone-book advertising, newspaper ads, and similar — of the home occupation that depicts the address of the location. The County's own home occupation / business license materials reiterate that signs are limited to two square feet and that the business must remain incidental to the residential use of the property. For non-home-occupation signs within a city's adopted sphere of influence, Section 21.08.070 provides that signs are permitted consistent with the applicable sign regulations of that city. Because the home-occupation sign allowance is so small and the appearance-change prohibition is strict, residents generally cannot install illuminated, freestanding, or business-style signage at a home occupation; the goal is for the business to be undetectable from normal residential activity. Questions can be directed to the Planning Department at 209.525.6330.