Fence Requirements: Castro Valley vs Livermore
How do fence requirements rules compare between Castro Valley, CA and Livermore, CA?
Castro Valley has fewer restrictions than Livermore.
Castro Valley, CA
Alameda County
Alameda County Zoning Ordinance generally limits residential front yard fences to 3-4 feet and side or rear yard fences to 6-7 feet, with clear-vision triangles required at driveways and intersections.
View full Castro Valley rules →Livermore, CA
Alameda County
Livermore corner lots must maintain a clear sight triangle — typically 25 feet from intersection curbs — with nothing over 3 feet in height.
View full Livermore rules →Key Facts Comparison
| Fact | Castro Valley | Livermore |
|---|---|---|
| Front yard max | 3-4 feet | - |
| Side and rear max | 6-7 feet | - |
| Clear-vision triangle | 3 feet max | - |
| Over max | Variance required | - |
| Agricultural zones | Different standards | - |
| Triangle Size | - | 25 ft typical |
| Max Height | - | 3 ft in triangle |
| Tree Canopy | - | 8 ft clearance |
| Applies To | - | Fences, hedges, signs |
| Enforcement | - | Code Enforcement |
Highlighted rows indicate differences between cities.
Castro Valley FAQ
What is a clear-vision triangle?
It is a sight-distance area at corners and driveways, typically 25 by 25 feet, where fences and landscaping are limited to 3 feet to ensure driver visibility.
Can I get a taller front yard fence?
Possibly, via a variance or administrative approval if you can show special circumstances, but solid front fences above 4 feet are rarely approved.
Livermore FAQ
Does the 3-foot rule apply to my existing hedge?
Yes. Existing landscaping must be kept trimmed to 3 feet within the sight triangle even if it predates current rules.
Who enforces this in Livermore?
Livermore code enforcement at (925) 960-4600 handles most complaints. Alameda County agencies handle regional issues.
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