CC&Rs that either effectively prohibit or unreasonably restrict the construction or use of an ADU or JADU on a lot zoned for single-family residential use are void and unenforceable.
No additional setback is required for ADU if constructed in the same location and with the same dimensions as the existing structure. An expansion of no more than 150 square feet beyond the existing dimensions can be allowed for ingress and egress purposes only.
Within Existing Structure: At least one ADU within portions of existing multifamily dwelling structures that are not as livable space if each unit complies with state building standards. The number of ADUs shall allow up to 25% of the existing multifamily dwelling units. No JADUs allowed Detached: Not more than two ADUs that are … Continued
Within an existing or proposed single-family home: One ADU or one junior ADU per lot if exterior access is available; and side and rear setbacks are sufficient for fire and safety. Detached: One detached, new construction ADU can be added to a property. This can be in addition to a JADU.
When ADUs are created through the conversion of a garage, carport or covered parking structure, replacement off-street parking is not required.
Regardless of lot coverage, floor area ratio, natural space and other standards the City must permit at least an 800 sq. ft. ADU that is up to 16 feet tall with at least a 4-foot setback.
There is no square footage limit for existing space. If you are adding square footage to create an ADU, the square footage of the unit cannot exceed 50% of the main residence. A detached ADU cannot exceed 1,000 square feet.
In a single-family residence: The floor area of the ADU should have at minimum a combined living, eating and sleeping room not less than 70 square feet. For a multifamily residence, an ADU should contain at minimum combined living, eating and sleeping room not less than 150 square feet. In both cases, any additional habitable … Continued
Fire sprinklers cannot be required in an ADU if sprinklers are not required for the primary residence. However, if the addition of the ADU incorporates a remodel of more than 50% of the main residence then sprinklers will be triggered for both the main residence and the ADU.
The rules apply to properties that are in a zoning district that allows residential use. For example, the Commercial/Office zoning district (C/O) is a commercial district but it does allow multifamily use under certain circumstances so the rules would apply to an existing residential use in the C/O district.
