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 Our previous ordinance which was adopted in May 2019 is no longer applicable.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.

DRP en Español

Department Spotlight

Covid-19 Housing Element Update Woolsey Fire Recovery Oil Well Tree Pest Disease FFCP Homeless Buying Property SEATAC Historic Preservation DRP Video Library

Follow Us

Twitter Facebook Instagram YouTube

©2009 Los Angeles County Department of Regional Planning.

All Rights Reserved. Terms under which this service is provided to you. Privacy Statement.

Please send website questions and comments to webadmin@planning.lacounty.gov

Many of our documents are in PDF format. You can download Adobe Reader by clicking this link.

Department of Regional Planning
320 West Temple Street
Los Angeles, CA 90012
T: (213) 974-6411 . F: (213) 626-0434
TDD: (213) 617-2292
Twitter Facebook Instagram YouTube