Los Angeles County Department of Regional Planning

Accessory Dwelling Units

Accessory Dwelling Unit Ordinance

On January 1, 2020, the State enacted new laws for accessory dwelling units (ADUs) and junior accessory dwelling units (JADUs). On October 13, 2020, the Board of Supervisors adopted the Accessory Dwelling Unit Ordinance, which amends Title 22 (Planning and Zoning) of the Los Angeles County Code to establish development standards and case processing procedures for ADUs and JADUs in the unincorporated areas of Los Angeles County.

Accessory Dwelling Unit Ordinance (Effective November 12, 2020)

Visit the Accessory Dwelling Unit Ordinance Archive page for historical information about the Accessory Dwelling Unit Ordinance hearings and previous versions of the ordinance.

Please note the Governor’s Executive order modifying some noticing requirements related to the California Environmental Quality Act (CEQA).

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Department of Regional Planning
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Los Angeles, CA 90012
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