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

Unincorporated Solano County does not impose a simple cap (such as 'no more than three dogs') in County Code Chapter 4. Instead, the chapter regulates concentrations of animals through its kennel/cattery and nuisance provisions. Under Article VI, a person is deemed to operate a commercial kennel if, without an applicable general business license, they keep, harbor, or maintain dogs over four months of age, and a commercial cattery if they keep cats over four months of age (section 4-85); operating a kennel or cattery requires proper zoning and an annual license. Separately, the 'animal nuisance' definition in section 4-11 includes causing offense or danger to public health, safety, or welfare 'by virtue of the number or types of animals maintained,' so a large number of animals that creates odor, unsanitary conditions, or disturbance can be abated as a nuisance under Article V. All dogs over four months of age must be licensed within 30 days (section 4-139), which functions as a per-animal control. Because the controlling limits come from zoning, business-licensing, and nuisance standards rather than a flat household cap, residents with many pets should confirm kennel/zoning requirements with the County.