Multifamily residential and mixed-use ADUs

Accessory dwelling units (ADUs) are permitted on lots with existing multifamily buildings in all multifamily and mixed-use zoning districts that allow residential uses in accordance with the requirements in the tables below. JADUs are not permitted on lots with multi-family buildings. For full details regarding development regulations related to ADU proposals on a lot developed with a multifamily building, please review the multifamily residential requirements through the online Municipal Code, section 16.79.090.

Detached ADUs
Parcels within a multifamily residential zoning district with an existing multifamily residential building are permitted to construct up to two detached ADUs meeting the requirements below. An ADU may also be converted from an existing detached accessory building in accordance with Municipal Code section 16.79.060(b).

Detached ADU requirements ADUs up to 800 sf ADUs 801-1,000 sf
Minimum unit size 150 sf 150 sf
Maximum unit size 800 sf 1,000 sf
Bedrooms 2 max 2 max
Minimum setback: front same as primary dwelling same as primary dwelling
Minimum setback: corner side 4 ft same as primary dwelling
Minimum setback: interior side 4 ft same as primary dwelling
Minimum setback: rear 4 ft 10 ft
Maximum height 16 ft 17 ft
Daylight plane n/a n/a
Permitted to exceed FAR and lot coverage maximum Yes, if built at the same time as, or after, the primary dwelling and other structures No                                                                     
Parking                                                                                                         One off-street parking space required (OK in tandem / setback configuration). Certain sites are not required to provide parking, see 16.79.080

Interior ADUs
Parcels within a multifamily residential zoning district with an existing multifamily residential building are permitted to convert non-living space into interior ADUs to construct up to 25 percent of the existing number of units on site, provided the ADUs meet the requirements below.

Interior ADU requirements
Minimum unit size 150 sf 
Maximum unit size
1,000 sf or 50% of the area of the largest existing unit, whichever is greater
Bedrooms
2 max
Minimum setback: front
same as the primary dwelling
Minimum setback: corner side
sufficient for compliance with fire and life safety 
Minimum setback: interior side
sufficient for compliance with fire and life safety 
Minimum setback: rear
sufficient for compliance with fire and life safety
Maximum height
same as primary dwelling
Daylight plane
n/a
Permitted to exceed FAR and lot coverage maximum
areas exempt from gross floor area (GFA) associated with conversions of non-living space to ADUs may exceed the FAR by the GFA added for the conversions
Parking
No off-street parking spaces required for the ADU(s) and no replacement parking required if converting garage/carport