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LA County Geo Hub
The community standards districts are established as supplemental districts to provide a means of implementing special development standards contained in adopted neighborhood, community, area, specific and local coastal plans within the UNINCORPORATED areas of Los Angeles County, or to provide a means of addressing special problems which are unique to certain geographic areas within the unincorporated areas of Los Angeles County. For detailed development standards for each CSD, please refer to the Community Standards District portion of Title 22 (Planning and Zoning) of the Los Angeles County Code (previously section – 22.44 Part 2).
https://geohub.lacity.org/datasets/lacounty::community-standards-district-csd-subareas