Los Angeles County Department of Regional Planning


SEA Ordinance


The Hillside Management and Significant Ecological Areas Ordinance was adopted in 1982 and is regulated through Section 22.56.215 (as of February 28, 2019, Chapter 22.104 and Chapter 22.102, respectively) of Title 22, the Los Angeles County Zoning code.

Upcoming changes to the Adopted SEA Ordinance:


The following amendments to the current SEA Ordinance were approved by the Board of Supervisors:

Pg 56: http://planning.lacounty.gov/assets/upl/project/tnc_draft-zoning-proposed-codes-20141103.pdf

This language will ensure that new projects in updated SEA areas will only be subject to the provisions of the SEA Ordinance if they are located within the SEA itself. Projects in SEAs which were adopted prior to January 1, 2012 will be subject to the SEA Ordinance for any project located on any parcel which contains a SEA. If you are unsure how this regulation will apply to you, please contact us.

At this time these changes are pending and have not yet gone into effect.


As a component of the SEA Program the SEA Ordinance is also being updated. There have been 6 drafts of the SEA Ordinance.

The draft SEA Ordinance was originally intended to be adopted alongside the General Plan. As of October 8, 2014, in order to respond to additional questions and concerns regarding implementation of the SEA Program and to provide more detailed, community-level outreach and follow-up, the SEA Ordinance and its components (the SEA Ordinance Program Guide, SEA Development Map, and the SEA Connectivity and Constriction Map), were taken off calendar by the Regional Planning Commission

Work on the Draft SEA Ordinance will be on hold for the foreseeable future and will not resume before the draft General Plan has finished public hearings at the Board of Supervisors.

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Department of Regional Planning
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Los Angeles, CA 90012
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