Encinitas, CA Accessory Structures: ADU Rules (2026)

Encinitas allows accessory dwelling units per California Government Code Sections 65852.2 and 65852.22, which preempt local zoning restrictions. A standard ADU may be up to 1,200 square feet for a new detached unit, or up to 1,000 square feet for a one-bedroom and 850 square feet for a studio when attached or converted from existing space. Junior ADUs (JADUs) may be up to 500 square feet and must be created within the existing primary dwelling footprint. No lot coverage, floor area ratio, or open space requirements may prevent construction of an ADU up to 800 square feet. Setbacks are 4 feet from side and rear property lines for new construction. Converted existing structures (garages, etc.) may maintain existing nonconforming setbacks. The city cannot require parking for ADUs within half a mile of public transit. Owner-occupancy requirements were eliminated by state law for ADUs (though JADUs require the owner to occupy either the primary dwelling or the JADU). Impact fees are waived for ADUs under 750 square feet. Encinitas must process ADU applications ministerially within 60 days. Properties in the coastal zone present a unique challenge as Coastal Development Permits may apply, adding time and review. The city adopted a local coastal program amendment to address ADU permitting in the coastal zone. Building permits require compliance with the California Building Code including fire sprinklers for attached ADUs. Contact Development Services at (760) 633-2710.