Brush Clearance: Palo Alto vs Sunnyvale
How do brush clearance rules compare between Palo Alto, CA and Sunnyvale, CA?
Sunnyvale has fewer restrictions than Palo Alto.
Palo Alto, CA
Santa Clara County
Palo Alto enforces California PRC 4291 defensible space in its Very High Fire Hazard Severity Zone, requiring 100 feet of vegetation management with stricter rules in the inner 30-foot zone.
View full Palo Alto rules →Sunnyvale, CA
Santa Clara County
Sunnyvale requires property owners to maintain defensible space and remove dead vegetation as a fire hazard. The city conducts annual weed abatement inspections under Sunnyvale Municipal Code Chapter 9.48.
View full Sunnyvale rules →Key Facts Comparison
| Fact | Palo Alto | Sunnyvale |
|---|---|---|
| Zone 1 | 0-30 feet, lean and green | - |
| Zone 2 | 30-100 feet, reduced fuel | - |
| Grass height limit | 4 inches in Zone 2 | - |
| Applies to | Parcels in VHFHSZ (foothills) | - |
| Inspections | Annual by Palo Alto Fire | - |
| Code reference | - | SMC Chapter 9.48 |
| VHFHSZ status | - | None, valley floor |
| Weed height limit | - | 6 inches typical |
| Inspection season | - | Spring annual notice |
| Non-compliance | - | City abates and bills owner |
Highlighted rows indicate differences between cities.
Palo Alto FAQ
Is my Palo Alto property in the VHFHSZ?
Check the CAL FIRE FHSZ map or Palo Alto hazard layer. Most flatland homes east of I-280 are not in the zone, while foothill parcels typically are.
What happens if I fail inspection?
The Fire Department issues a notice with a deadline. Non-compliance can lead to city-hired abatement billed to the property.
Sunnyvale FAQ
Does Sunnyvale require 100 feet of defensible space?
No, Sunnyvale is not in a state-designated fire hazard zone, so the 100-foot defensible space law does not apply. Standard weed abatement still applies.
What happens if I ignore the abatement notice?
The city will contract the work and place the cost on your property tax bill, plus administrative fees.
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