Unincorporated Solano County allows home occupations as an accessory residential use under Zoning Code Chapter 28. Section 28.72.40 defines Type I home occupations (no employees, no customers on site) and Type II home occupations (limited employees, customers, and retail), each with floor-area and operating limits.
Home-based businesses in the unincorporated county are regulated as accessory uses by Solano County Code Chapter 28 (Zoning Regulations), Section 28.72.40. A Type I home occupation is the most restrictive: only family members residing on the premises may work in it, no customers or clients come to the property, and the area used (excluding incidental storage) is capped, with limited incidental storage in an accessory structure. A Type II home occupation is broader: it can permit one employee where the parcel is at least two net acres, allows a limited number of customers/clients per day, permits incidental retail of goods produced on site, and allows one small non-illuminated sign. Both types must comply with parking, stormwater, and general accessory-use standards. Whether a use qualifies as Type I or Type II is confirmed through the county's Business License Zoning Clearance, which Planning Services reviews against Chapter 28 before any business license is issued. Because exact figures are set in Chapter 28, verify the current square-footage, customer, and employee limits with Planning Services at 707-784-6765.
Operating a business that exceeds the Chapter 28 home occupation standards - too many employees, customers, signage, or floor area, or generating off-site impacts like traffic, noise, or storage - converts the use into one that is not permitted in a residential zone and can be pursued as a zoning code-compliance case by Resource Management. The county can require the business to scale back to the allowed home occupation limits or cease operating.
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