5 county-level rules, plus city-specific rules for 2 cities in Los Angeles County, California.
Verified from official government sources
LA County maintains roughly 30 community plans plus several specific plans under LACO Title 22 that overlay base zoning across unincorporated areas like Altadena, East LA, Marina del Rey, and Topanga with tailored use, density, height, and design rules.
Projects setting aside affordable units in unincorporated LA County qualify for state-mandated density bonuses, parking reductions, and concessions under California Government Code Section 65915 and LACO Title 22.140.250, with bonuses now up to 80 percent.
LA County does not use the LA City TOC tier system; instead, individual community plans add Transit-Oriented District (TOD) overlays under LACO Title 22, while Metro Joint Development sets terms for housing on Metro-owned parcels near rail.
LACO Title 22.110.090 governs Hillside Management Areas in unincorporated LA County, applying a slope-density formula, requiring vegetation protection, and triggering geotechnical review and CEQA evaluation for steep-lot development.
Unincorporated coastal areas including Marina del Rey and Topanga lie within the California Coastal Zone, requiring Coastal Development Permits under LACO Title 22.46 and concurrent California Coastal Commission review for projects affecting public access, views, or sensitive habitat.
2 cities in Los Angeles County have their own zoning overlays & bonuses rules. Each link goes to that city's dedicated page with code citations.
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Los Angeles County Ordinance Hub →