Sonoma County, CA Animal Ordinances: Pet Limits (2026)

Pet limits in the unincorporated county come from the interaction of Permit Sonoma's zoning standards and Sonoma County Animal Services licensing. According to Permit Sonoma's guidance, no permit is required to keep up to four dogs and/or four cats on a property. Beyond that threshold, additional authorization is needed depending on purpose. Keeping five to ten dogs or cats for personal, non-commercial reasons is treated as a 'pet fancier facility,' which is allowed in the agricultural and rural-residential zoning districts with a license from Animal Services, under Zoning Code Section 26-88-010(m).

Keeping five or more dogs and/or five or more cats over four months of age for commercial purposes (such as boarding, breeding, buying, selling, renting, exhibiting, or training) meets the definition of a 'commercial kennel' and requires a use permit. These distinctions mean the same number of animals can require different approvals depending on whether the use is personal or commercial and on the parcel's zoning. Because limits depend on both zoning and intended use, owners should confirm the current requirements with Permit Sonoma and Sonoma County Animal Services before exceeding four dogs or four cats.