Height Limits: Altadena vs Castaic
How do height limits rules compare between Altadena, CA and Castaic, CA?
Altadena and Castaic have similar restriction levels.
Altadena, CA
Los Angeles County
Altadena CSD caps front-yard fences at 42 inches within 10 feet of the right-of-way (with open/non-view-obscuring design ≥80% transparency required for taller fences), and 6 feet beyond 10 feet from the right-of-way.
View full Altadena rules →Castaic, CA
Los Angeles County
LA County Title 22 zoning code limits fences in unincorporated areas to 42 inches in front yards and 6 feet in side and rear yards. Fences under 6 feet generally do not require a building permit but may need Regional Planning approval.
View full Castaic rules →Key Facts Comparison
| Fact | Altadena | Castaic |
|---|---|---|
| Code Section | Altadena CSD 22.306.070.A.3 | - |
| Front (within 10 ft of ROW) | 42 in (or 6 ft if 80% open) | - |
| Front (>10 ft from ROW) | 6 ft | - |
| Side/Rear (Title 22.110.070) | 6 ft typical | - |
| Prohibited | Barbed wire, razor wire, broken glass | - |
| Front Yard | - | 42 inches max |
| Side/Rear Yard | - | 6 feet max |
| Permit Required | - | Over 6 feet |
| Under 6 Feet | - | No building permit |
| Review By | - | Regional Planning |
Highlighted rows indicate differences between cities.
Altadena FAQ
How tall can my front fence be in Altadena?
42 inches within 10 feet of the right-of-way line (or 6 ft if at least 80% transparent and supports 5+ ft apart). 6 ft beyond that under Altadena CSD 22.306.070.A.3.
Castaic FAQ
How tall can a fence be in unincorporated LA County?
Front yard fences are limited to 42 inches. Side and rear yard fences can be up to 6 feet. Fences over 6 feet need a building permit from Public Works.
Do I need a permit for a fence in unincorporated LA County?
A building permit is not required for fences under 6 feet, but you may need approval from the Department of Regional Planning depending on the fence location relative to setback lines.
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