San Marcos, CA Animal Ordinances: Chickens & Livestock (2026)

The City of San Marcos regulates the keeping of animals through its municipal code and zoning ordinance. Properties in agricultural and estate residential zones (such as R-1 and RR zones) may keep horses, goats, sheep, rabbits, and poultry subject to lot size minimums and animal density limits. Standard single-family residential zones typically allow hens but prohibit roosters due to noise. Chicken coops and animal enclosures must be set back a minimum distance from property lines and neighboring dwellings, typically 20 to 50 feet depending on the animal type and zone. All enclosures must be kept clean and free of odor, vermin, and fly breeding conditions. Manure must be managed to prevent nuisance conditions. Feed must be stored in rodent-proof containers. The San Diego County Department of Animal Services enforces animal cruelty and neglect complaints. Properties within the city may also be subject to HOA restrictions that further limit animal keeping. Code Enforcement can be reached at (760) 744-1050 x3234 for complaints regarding animal nuisance conditions.