Tree Trimming: Castro Valley vs Hayward
How do tree trimming rules compare between Castro Valley, CA and Hayward, CA?
Castro Valley and Hayward have similar restriction levels.
Castro Valley, CA
Alameda County
Alameda County requires trimming of trees that obstruct public rights-of-way, block street-sign visibility, or interfere with utility lines. Protected heritage and native oak trees may require a permit before trimming.
View full Castro Valley rules →Hayward, CA
Alameda County
Hayward requires 14 feet of vertical clearance over streets and 8 feet over sidewalks. Hillside homes must clear branches 10 feet from chimneys.
View full Hayward rules →Key Facts Comparison
| Fact | Castro Valley | Hayward |
|---|---|---|
| Sidewalk clearance | 8 feet | - |
| Street clearance | 14 feet | - |
| Chimney clearance | 10 feet (PRC 4291) | - |
| Protected trees | Permit may be required | - |
| Utility lines | PG&E handles | - |
| Over street | - | 14 ft clearance |
| Over sidewalk | - | 8 ft clearance |
| From chimney | - | 10 ft (VHFHSZ) |
| Ladder fuel | - | Remove to 6 ft |
| Permit | - | Not required, private |
Highlighted rows indicate differences between cities.
Castro Valley FAQ
Can my neighbor trim my tree?
Yes, a neighbor may trim branches that overhang their property to the property line, but cannot damage the tree or enter your yard without permission.
Do I need a permit to trim my oak tree?
Possibly, if the tree is protected under a local heritage tree ordinance or is in a designated natural resource area; check with Alameda County Planning before major pruning.
Hayward FAQ
Can I trim my neighbor's tree on my side?
Yes, up to the property line, without harming the tree's health. Giving the neighbor notice first avoids disputes.
Does PG and E trim for free?
Yes near energized lines through their vegetation management program; request service at pge.com.
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