The Building Code establishes minimum requirements for habitable structures. The ADU must not exceed 850 square feet, and the City recommends the minimum size not be below 200 square feet.
The ADU must be between the minimum size neede to meet building code requirements and 850 square feet. Habitabel rooms must be at least 70 square feet (6.5m2). If a room has a sloping ceiling, any part of that room with a ceiling below 5 feet in height is not considered as habitable.
The detached ADU cannot exceed 24 feet in height, including when added above a garage.
Detached garages over 800 square feet, require a Conditional Use Permit (ask staff for details).
There must be a separate entry for the ADU.
The ADU must match the character of the main house.
See “Infill and Other Design standards” design standards for more requirements.