San Francisco Signage Rules Rules (2026): What You Need to Know

San Francisco's prohibition on home occupation signage stems from two intersecting provisions of the Planning Code. First, Section 204.1 establishes that a home occupation is an accessory use that must not alter the residential character of the dwelling or its surroundings. Any exterior sign — regardless of size, material, or subtlety — that identifies a business operating at a residential address constitutes a change in the residential character of the property and violates the accessory use standard. Second, Planning Code Article 6 (Signs and Awnings) establishes a comprehensive regulatory framework for signs throughout the city, and the provisions applicable to residential zoning districts strictly limit the types of signs permitted. Commercial business signs, advertising signs, and identification signs are not included among the permitted sign types in residential districts.

The prohibition encompasses all forms of exterior business identification. This includes, but is not limited to: wall-mounted business signs, hanging shingle signs, window signs or graphics visible from outside, A-frame or sandwich board signs on the sidewalk or driveway, banner signs, illuminated signs of any kind, business nameplates on doors or mailboxes, and yard signs advertising the business. The restriction extends to temporary signs — even a sign placed outside only during business hours and removed afterward violates the home occupation standard.

Vehicle-based advertising is also restricted. While a standard work vehicle with a small company name and phone number may be parked at the residence as part of normal business operations (subject to the general home occupation traffic and vehicle limitations), using a prominently wrapped or branded vehicle as a stationary advertisement — parking it conspicuously in the driveway or at the curb specifically to draw attention to the home business — is not consistent with maintaining the residential character of the property.

San Francisco's residential neighborhoods include a wide variety of housing types, from Victorian single-family homes in Pacific Heights to multi-unit buildings in the Mission to row houses in the Sunset. The signage prohibition applies equally across all residential zoning districts and all housing types. Interior signage that is not visible from the exterior (such as a business name on an interior office door) is not regulated by the Planning Code. Home occupation operators who wish to promote their businesses should use online marketing, business cards, and other methods that do not involve exterior signage at the residential address. Contact the Planning Department at (628) 652-7600 for signage questions.