ADU rules in Port Hueneme, CA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Port Hueneme allows ADUs per CA Gov Code §§66310–66342 (formerly §65852.2). Detached ADUs up to 1,200 sq ft, 4 ft side/rear setbacks. All residential zones eligible. Coastal zone ADUs require LCP consistency review.
ADUs and JADUs are allowed in all residential zones per state law. Standard CA ADU rules apply: detached up to 1,200 sq ft, 4 ft side/rear setbacks, no impact fees for ADUs <750 sq ft. The City has an instructional handout for ADU permit applications. Coastal zone properties require review for Local Coastal Program consistency. JADUs up to 500 sq ft within primary structure. Garage conversions do not require replacement parking.
Building an ADU without required permits: double permit fees plus $500 fine. Occupying an unpermitted ADU: $250 fine per month until permitted or removed. ADU not meeting California building code standards: stop-work order and mandatory corrections. Using an ADU for short-term rental (under 30 days) in violation of local rules: $500 fine per day.
Port Hueneme, CA
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Side-by-side rule comparisons with other cities in Ventura County.
See how other cities in Ventura County handle adu rules.
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