Tree Trimming: Mountain View vs San Jose
How do tree trimming rules compare between Mountain View, CA and San Jose, CA?
San Jose has fewer restrictions than Mountain View.
Mountain View, CA
Santa Clara County
Mountain View regulates pruning of heritage and street trees. Work on protected trees requires a permit and must follow ISA pruning standards.
View full Mountain View rules →San Jose, CA
Santa Clara County
Santa Clara County regulates tree trimming through Heritage Tree and Hillside ordinances. Light maintenance pruning is allowed, but heritage trees like native oaks require permits for substantial canopy work.
View full San Jose rules →Key Facts Comparison
| Fact | Mountain View | San Jose |
|---|---|---|
| Heritage pruning | Permit required | - |
| Standard | ANSI A300 and ISA | - |
| Topping | Prohibited | - |
| Minor clearance | Under 25 percent canopy | - |
| Permitting body | City Forestry | - |
| Heritage permit threshold | - | Over 25 percent canopy |
| Native oak protection | - | 12 inches DBH typical |
| Routine pruning | - | Generally permit-free |
| Defensible space | - | Limb up 6 ft in VHFHSZ |
| Utility trimming | - | PG&E has easement rights |
Highlighted rows indicate differences between cities.
Mountain View FAQ
Do I need a permit to trim my backyard oak?
If the oak qualifies as a Heritage Tree by species and size, yes. Contact the City Arborist before pruning beyond light clearance.
Can I hire any tree company?
Use a C-61 D-49 licensed tree service with an ISA Certified Arborist on staff to ensure code-compliant work on protected trees.
San Jose FAQ
Can I trim my neighbor oak branches hanging over my yard?
California common law allows trimming branches back to the property line at your expense, without damaging tree health. For heritage oaks, excessive pruning could trigger violation even on your own side.
Do I need a permit to trim dead branches?
No. Dead, diseased, and hazardous branch removal is generally exempt. Document the hazard with photos, and consider hiring a certified arborist for heritage trees to avoid disputes.
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