Permit Requirements: Palo Alto vs Sunnyvale
How do permit requirements rules compare between Palo Alto, CA and Sunnyvale, CA?
Palo Alto and Sunnyvale have similar restriction levels.
Palo Alto, CA
Santa Clara County
Palo Alto requires a building permit for fences over 7 feet tall or any retaining-wall combination exceeding 4 feet; fences at or under 6 feet generally do not need a permit.
View full Palo Alto rules →Sunnyvale, CA
Santa Clara County
Fences up to 6 feet in side and rear yards do not require a building permit in Sunnyvale, but fences over 7 feet, retaining walls over 4 feet, and pool barriers always need permits.
View full Sunnyvale rules →Key Facts Comparison
| Fact | Palo Alto | Sunnyvale |
|---|---|---|
| Under 7 feet | No building permit | - |
| Over 7 feet | Permit required | - |
| Pool barriers | Permit required | Always permitted |
| Retaining + fence | Over 4 ft needs permit | - |
| Typical fee | 150 to 400 dollars | - |
| No permit up to | - | 7 feet wood / vinyl |
| Permit required over | - | 7 feet |
| Retaining wall trigger | - | Over 4 feet |
| Issuing office | - | One Stop Permit Center |
Highlighted rows indicate differences between cities.
Palo Alto FAQ
Do I need a permit to replace an existing fence?
Not if it is at the same location and height under 7 feet, but zoning compliance still applies.
What about a masonry wall?
Masonry walls usually need a permit due to structural footing requirements.
Sunnyvale FAQ
Do I need a permit to replace my existing 6-foot fence?
Like-for-like replacement at 6 feet in a side or rear yard does not require a building permit, but setbacks and HOA approval still apply.
Is barbed wire allowed on a residential fence?
No. Barbed wire and razor wire are not allowed on residential fences. Commercial and industrial uses may petition Planning for an exception.
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