4 county-level rules, plus city-specific rules for 1 city in Los Angeles County, California.
Verified from official government sources
Los Angeles County does not use Historic Preservation Overlay Zones; unincorporated areas instead apply Significant Ecological Areas under Title 22.110.060 for natural resources and Mills Act historic districts for buildings.
Los Angeles County designates historic landmarks under Title 22.124, with the Historical Landmarks and Records Commission recommending Board of Supervisors approval for properties of local, state, or national cultural significance.
California Government Code 50280 and LA County Code Title 22.124 allow Mills Act contracts that cut property tax bills 60 to 70 percent for designated historic property owners who agree to ten-year preservation plans.
Los Angeles County imposes a demolition stay under Title 22.124 for designated historic landmarks in unincorporated areas, with Cultural Heritage Commission review required before any demolition permit can issue.
1 cities in Los Angeles County have their own historic preservation rules. Each link goes to that city's dedicated page with code citations.
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