Accessory Dwelling Units

In July 2015, City Council approved new regulations regarding Accessory Dwelling Units (also known as ADU's/secondary/in-law units). I believe these changes will allow Berkeley homeowners to age in place, and increase Berkeley's housing stock in a subtle way. Read my Daily Cal op-ed on housing in Berkeley here.

These regulations streamline rules around Accessory Dwelling Units. A summary of the ordinance is copied below:

  1. No lot size requirement.
  2. Maximum size of 750 square feet or 75% of the primary structure, whichever is less.
  3. Height - 14 foot maximum height at peak of roof, 10 foot maximum at eave of roof. Not to exceed 10 feet at property line.
  4. Setback – 4 foot minimum side and rear setback from property line. No side or rear setback required if ADU will replace preexisting buildings on the property line.
  5. Parking - Parking is not required for ADUs. If an Accessory Dwelling Unit removes a required off-street parking space for the main dwelling unit, the subject lot shall provide one off-street parking space