Los Angeles County Department of Regional Planning

Accessory Dwelling Units

Accessory Dwelling Units

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 accessory use to a single-family or multifamily residential building, wherever such developments are permitted. An ADU is required to provide permanent provisions for living, sleeping, eating, cooking facilities, and sanitation, and 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 a dwelling unit with independent exterior access that is no more than 500 square feet in size and contained entirely within a single-family residence, including an attached garage. The proposed JADU or the existing single-family residence must be owner-occupied.

Please visit the Applications & Forms page for application requirements.

Read the ADU Ordinance Summary here.

If you have any questions regarding ADUs or JADUs, 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
TDD: (213) 617-2292
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