Santa Rosa, CA Home Business: Zoning Restrictions (2026)

The Santa Rosa Zoning Code (Title 20) places the standards for home-based businesses in Chapter 20-42 (Standards for Specific Land Uses), Section 20-42.070. The City's published Home Business Permits page and FAQ summarize the operative standards: the business must be operated by a resident of the home, be clearly secondary to the home's use as a residence, not create noticeable noise, odors, dust, or other impacts, have no outdoor storage of business materials, and not involve regular outdoor work activity. The City's published prohibited-use list, repeated in both the official Home Business page and the City's FAQ, expressly bars the following from operating as home occupations: animal hospitals; automobile or vehicle repair shops; bee keeping; kennels, including pet day care; pet grooming shops; raising of animals for commercial purposes; weapons or ammunition sales; welding shops; and woodworking or metal working shops. Cottage food operations are governed separately by California Government Code Section 51035, which expressly preempts municipal bans: cities must either classify cottage food operations as a permitted use of residential property or grant a non-discretionary permit subject only to reasonable standards on spacing, traffic, parking, and noise. State law also provides that use of a residence for a cottage food operation does not constitute a change of occupancy under the State Housing Law or local building and fire codes (Gov. Code 51035(c) and (d)). Adjacent zoning provisions worth noting include Section 20-42.080 (Live/Work and Work/Live Units), which applies when work-related space exceeds what 20-42.070 contemplates, and the residential-district use tables at Section 20-22.030. Live/work units, accessory dwelling units, and short-term rentals all have separate standards in Chapter 20-42 and Chapter 20-28.