ADU rules in Oakland, CA β also called accessory dwelling unit regulations or granny flat ordinances β cover setbacks, owner-occupancy, parking, and permit requirements.
Oakland permits ADUs on all residential lots under Gov Code Β§65852.2 and Planning Code 17.103. Ministerial 60-day approval up to 1,200 sq ft, 4-foot setbacks, and no parking mandate within half a mile of transit.
Oakland is one of California's most ADU-friendly jurisdictions, having eliminated most discretionary review. Under Planning Code Chapter 17.103, single-family lots may have one ADU plus one Junior ADU, and multi-family properties may add two detached ADUs plus convert up to 25 percent of existing non-livable space into additional ADUs per AB 1033 and AB 2221. Maximum detached ADU size is 1,200 sq ft; attached ADUs are capped at 50 percent of the primary dwelling or 1,200 sq ft, whichever is less. State law (Gov Code Β§65852.2 as amended by SB 1211 in 2024) prohibits Oakland from requiring: owner occupancy (for ADUs permitted between 2020-2025), replacement parking when converting a garage, or parking at all within half a mile of transit (nearly all of Oakland qualifies). Setbacks are 4 feet from side and rear lot lines. Height limits are 16 feet for detached ADUs generally, 18 feet within half a mile of transit, and 25 feet when attached. SB 9 urban lot splits and two-unit developments are implemented through Oakland's SB 9 Residential Unit Division ordinance. Permit fees include Building Division plan check, school impact fees (capped for ADUs under 750 sq ft), and sewer/EBMUD water connection fees. Oakland has pre-approved ADU plans to speed up permitting. Short-term rental of ADUs is prohibited under OMC 5.91.
Specific penalty amounts for this ordinance are not published in a publicly accessible fine schedule. Contact Oakland code enforcement directly for current fines, enforcement procedures, and hearing options.
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Side-by-side rule comparisons with other cities in Alameda County.
See how other cities in Alameda County handle adu rules.
See how Oakland's adu rules rules stack up against other locations.
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