ADUs must be designed and constructed to architecturally and aesthetically match the existing single-family dwelling in terms of exterior materials, colors, building elements, structure mass and roof pitch.
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A detached ADU must have side and rear setbacks of at least four feet. Otherwise, setbacks applicable to other structures on the parcel apply. See City Code Section 6.85.030.A.1 for residential setback requirements.
An ADU must provide one parking space in addition to parking required for the primary dwelling. The parking space may be covered or uncovered and can be provided on an existing paved driveway. However, in the following instances, no additional parking space is required:
a. The accessory dwelling unit is located within one-half mile walking distance of public transit, including transit stations and bus stops.
b. The accessory dwelling unit is located within a historic district.
c. The accessory dwelling unit is part of the proposed or existing primary residence or an accessory structure.
d. When on-street parking permits are required but not offered to the occupant of the accessory dwelling unit.
e. When there is a designated car share vehicle parking space located within one block of the accessory dwelling unit.
When a garage, carport, or covered parking structure providing required parking for the primary residence or residences is demolished to allow for the construction of an ADU or is converted to an ADU, those parking spaces are not required to be replaced.
If the ADU meets the standards of the City ordinance and the following criteria, fire sprinklers are not required:
a. The unit meets the definition of an Accessory Dwelling Unit in the Government Code (section 65852.2).
b. The existing primary residence is not required to have an automatic residential sprinkler system.
c. The unit is on the same lot as the primary residence.
The 2019 Energy Code PV system prescriptive requirements under Section 150.1(c)14 apply only to newly constructed detached accessory dwelling units (ADUs). Exceptions from this requirement may be granted based on limited solar exposure or high snow load. See the City Solar Photovoltaic Exceptions handout for more information.