California Civil Code §3482.5 protects established agricultural operations from nuisance suits after three years of consistent activity. LA County applies the state rule, particularly important in Antelope Valley and Santa Clarita Valley farming areas.
California Civil Code §3482.5 provides that an agricultural activity in operation for more than three years and consistent with proper customs is not a nuisance because of changed surrounding conditions. Once a residential neighbor moves near an established farm, ranch, apiary, or processing operation, they cannot sue to shut it down for ordinary noise, dust, or odor. LA County has not enacted a stricter or weaker right-to-farm ordinance, so the state statute controls statewide and across all 88 cities. The protection matters most in unincorporated Antelope Valley alfalfa and onion farms and Santa Clarita Valley orchards, where residential development encroaches on long-standing operations.
No fines apply to farms protected by Civil Code §3482.5. A neighbor who sues a protected farm and loses may owe defense costs under anti-SLAPP rules. Operations exceeding proper customs forfeit the shield and face standard nuisance liability.
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Side-by-side rule comparisons with other cities in Los Angeles County.
See how Castaic's farm nuisance protection rules stack up against other locations.
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