Setback requirements in unincorporated LA County are established under Title 22, Section 22.110. Typical R-1 zone: 20 ft front, 5 ft side, 15 ft rear. The Director of Public Works may grant setback modifications without hearing. ADUs require 4 ft side/rear setbacks per state law.
Setback requirements in unincorporated LA County are defined by zoning district under Title 22. R-1 zones typically require 20-25 foot front setbacks, 5-foot side setbacks, and 15-25 foot rear setbacks. Corner lots have additional street-side setback requirements. Projections such as eaves, bay windows, and chimneys may extend into setback areas by up to 2.5 feet. ADUs have reduced setbacks of 4 feet for side and rear yards under state law. Setback variances require application to the Regional Planning Commission with a public hearing.
Building within setback areas without a variance is a zoning violation. LA County Building & Safety will deny permits for non-compliant plans. Structures built in violation of setbacks face stop-work orders, retroactive permit requirements with double fees, and potential demolition orders. Administrative fines of $250-$1,000 per day apply until the violation is corrected.
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Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle setback rules.
See how Castaic's setback rules rules stack up against other locations.
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