Los Angeles County Department of Regional Planning

Accessory Dwelling Units

Accessory Dwelling Units

This following information summarizes key Planning information regarding the State Laws adopted on January 1, 2020. The requirements summarized below are not inclusive and are subject to change with the adoption of a new Accessory Dwelling Unit (ADU) Ordinance. Our previous ordinance which was adopted in May 2019 is no longer applicable.

What is an Accessory Dwelling Unit (ADU)?

An Accessory Dwelling Unit, also known as a granny or in-law unit, is a living unit that may be up to 1200 sq. ft. An ADU is an attached or detached residential dwelling unit which provides independent living facilities for one or more persons. The ADU unit is located on the same property as the primary residence, is accessory to the primary residential building.

An ADU is required to provide permanent provisions for living, sleeping, eating, cooking facilities, and sanitation, as well as, meet other requirements as stipulated by applicable life and safety code requirements from the Department of Public Works, Building and Safety Division and Fire Departments. Please contact those Departments for their process and fees.

What is a Junior Accessory Dwelling Unit (JADU)?

A Junior Accessory Dwelling Unit (JADU) is an additional, independent living unit created through the conversion of an existing legally permitted bedroom or habitable area in a single-family dwelling.

Here is a summary of the State Law requirements.

If you have any questions regarding the State Laws, please Contact us.

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Department of Regional Planning
320 West Temple Street
Los Angeles, CA 90012
T: (213) 974-6411 . F: (213) 626-0434
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