All properties zoned for single family, two-family or multifamily may be eligible to build ADUs.
Number of units
The number of ADUs you’re able to build depends on how your lot is zoned:
- Lots zoned for single family use may add 1 ADU and 1 Jr. ADU (JADU).
- Lots zoned for two-family or multi-family may add up to 2 detached ADUs per lot or up to 25% of the existing units in the building if conversions of existing non-living space.
The maximum ADU you can build depends on the ADU type:
- The maximum size is 500 sq. ft. for a JADU
- 850 sq. ft. for a one bedroom detached ADU
- 1,000 sq. ft. for a 2+ bedroom detached ADU
- Attached ADUs cannot be greater than 50% of the existing home’s floor area.
Detached ADUs can reach a maximum height of 16 feet. Attached ADUs can reach the same height as the main structure, assuming they comply with the standards for that zone.
Conversion of existing unfinished basement space can be used for an attached ADU.
Minimum setbacks of 4 feet from the side and rear lot lines, as well as 6 feet from any existing structures are required for detached ADUs.
No additional parking is required for ADUs. Even when converting a garage or carport, replacement parking is not required.
Owner occupancy is not a requirement for permitting an ADU from January 1, 2020 until January 1, 2025. This is a great opportunity for rental property owners to increase their yields in a cost-effective way.
While long-term rentals are permitted for ADUs, short-term rentals (e.g. Airbnb for less than 30 days) are not permitted in Oakland.
Are you in a creek protection area? Do you have a utility easement over your property? Reach out to us and we’ll help you build a custom ADU to fit your unique property characteristics and local regulations!