Camarillo, CA Accessory Structures: ADU Rules (2026)

050 sets the count: a single-family parcel may add one internal or attached ADU (or one JADU) plus a separate detached, new-construction or converted ADU, and the detached unit can combine with a JADU. Multifamily parcels may convert non-livable space (storage rooms, basements, garages) into internal ADUs up to 25 percent of the existing unit count, and may add up to two detached ADUs on a proposed multifamily lot or up to eight on an existing one, capped at the number of units already there.

060 sets the development standards. An attached ADU with one bedroom or less tops out at 850 square feet; more than one bedroom allows 1,000 square feet, or 1,200 square feet on lots of an acre or more. A detached ADU follows the same 850/1,000/1,200 tiers, but drops to 800 square feet if paired with a JADU. Height is capped at 16 feet for a detached ADU, rising to 18 feet within a half-mile of a major transit stop (plus two more feet to match the primary roof pitch), and attached ADUs may reach 25 feet but never more than two stories.

Setbacks follow the underlying zone, but the code guarantees that any ADU of 800 square feet or less with four-foot side and rear setbacks cannot be blocked by lot coverage, floor-area-ratio, front-setback, or private-open-space standards. 080, waived entirely for units within a half-mile of transit, in a historic district, converted from an existing accessory structure, or built alongside a new single-family or multifamily dwelling. 090(H). 090 that override the local chapter, including a flat 800-square-foot cap and four-foot setbacks with no discretionary review.