New Laws for Accessory Dwelling Units

BERKELEY — As of January 1, 2020, new laws have gone into effect that make it easier for California homeowners to build accessory dwelling units (ADUs) on their properties. Often referred to as a “granny unit,” an ADU can take a variety of forms, including a converted garage or basement, a new room created by altering a home’s existing layout, a room addition, or a detached backyard structure.

Here are some ways the new laws have made it easier to create ADUs:

•  The rules on property line setbacks are more relaxed.

•  For garage conversions, homeowners are no longer required to create replacement parking spaces to supplement the loss of garage parking.

•  Local jurisdictions can no longer limit an ADU’s size based on a percentage of the primary residence.

•  The permitting office must act on an ADU permit application within 60 days of submission (down from 120 days).

•  Owner-occupancy requirements can no longer be imposed on the construction of ADUs.

These relaxed regulations have made ADUs the most flexible form of housing in the state, affording homeowners new opportunities to improve their living and financial situations. For example, an ADU can enable a family to house their parents or adult children and create a multigenerational compound. ADUs are also great options for “aging in place” because they can be made ADA-accessible to accommodate the needs of senior citizens. Furthermore, the addition of an ADU can allow rental property owners to increase their rental incomes. Talk to your local building contractor to learn more about the benefits of adding an ADU.