What is an ADU or JADU?

On September 27, 2016, Governor Brown signed two legislative acts thereby removing the barriers that homeowners faced when trying to build accessory dwelling units; Assembly Bill 2299 (AB 2299) and Senate Bill 1069 (SB 1069). Generally, AB 2299 (Chapter 735, Statutes of 2016) requires a local government (beginning January 1, 2017) to ministerially approve ADUs if the unit complies with certain parking requirements, the maximum allowable size of an attached ADU, and setback requirements. Click here to see more detailed information regarding the state of California’s general ADU requirements. To see ADU and JADU requirements for various cities in the Los Angeles basin, click here.

An ADU is a secondary dwelling unit with complete independent living facilities for one or more persons and generally takes three forms:

Detached: The unit is separated from the primary structure.

Attached: The unit is attached to the primary structure.

Repurposed Existing Space: Space (e.g., master bedroom) within the primary residence is converted into an independent living unit or a detached existing structure is repurposed such as a garage or pool house.

Junior Accessory Dwelling Units: Jadu’s have a maximum of 500 square feet and are typically bedrooms in a single-family home that have an entrance into the unit from the main home and an entrance to the outside from the JADU. The JADU must have cooking facilities, including a sink, but is not required to have a private bathroom. If the a local ordinance requires a permit, the local agency shall not require additional parking or charge a fee for a water or sewer connection as a condition of granting a permit for a JADU