Brush Clearance: Hesperia vs San Bernardino
How do brush clearance rules compare between Hesperia, CA and San Bernardino, CA?
Hesperia and San Bernardino have similar restriction levels.
Hesperia, CA
San Bernardino County
Hesperia contracts with San Bernardino County Fire Hazard Abatement to enforce defensible-space requirements. Weeds and grasses must be cut to no more than 4 inches in height within 30 feet of any structure. State law (PRC §4291) requires 100 ft of defensible space in State Responsibility Areas and Very High Fire Hazard Severity Zones — newly expanded in Hesperia effective July 22, 2025.
View full Hesperia rules →San Bernardino, CA
San Bernardino County
Foothill Very High Fire Hazard Severity Zone properties must maintain 100 feet of defensible space under California PRC 4291. San Bernardino County Fire conducts annual hazard inspections each spring.
View full San Bernardino rules →Key Facts Comparison
| Fact | Hesperia | San Bernardino |
|---|---|---|
| Weed Height Limit | ≤4 in within 30 ft of structures | - |
| Defensible Space (VHFHSZ) | 100 ft per PRC §4291 | - |
| Zone 0 | 0–5 ft ember-resistant | - |
| Inspections | Spring (weeds) + Fall (tumbleweeds) | - |
| Enforcement | SB County Fire Hazard Abatement (760) 995-8140 | - |
| WUI Effective | Expanded VHFHSZ maps effective July 22, 2025 | - |
| Legal authority | - | California PRC 4291 defensible space law |
| Clearance distance | - | 100 ft around structures in VHFHSZ areas |
| Zone 0 rule | - | 0 to 5 ft ember-resistant zone required under AB 3074 |
| Inspection window | - | Annual hazard inspections April through June |
| Non-compliance | - | County abates and liens property for work plus admin fees |
Highlighted rows indicate differences between cities.
Hesperia FAQ
How tall can weeds be on my Hesperia property?
Weeds and grasses (other than ornamentals) must be kept to 4 inches or less within 30 feet of any structure. In VHFHSZ areas, PRC §4291 requires 100 feet of defensible space organized into three zones.
Who enforces weed abatement in Hesperia?
San Bernardino County Fire Hazard Abatement enforces under contract with the City. Inspections run twice a year — spring for weeds and grasses, fall for tumbleweeds. Contact (760) 995-8140 option 5.
What happens if I don't clear my weeds?
After notice, a county contractor clears the parcel and the cost plus administrative fees is billed to the owner. Unpaid charges become a tax lien on the property.
Am I in a Very High Fire Hazard Severity Zone?
Possibly — Hesperia's VHFHSZ areas were significantly expanded effective July 22, 2025 under the updated CAL FIRE/OSFM LRA maps. Check the OSFM viewer or contact Hesperia Building & Safety.
San Bernardino FAQ
Do all San Bernardino properties need 100-foot clearance?
Only parcels inside or within 100 ft of state-mapped VHFHSZ or Local Responsibility Area high-fire zones, primarily the foothills and wildland interface.
What is Zone 0 and when does it apply?
Zone 0 is the five-foot ember-resistant perimeter required by AB 3074; it prohibits combustibles like wood mulch, wood fencing, and stored firewood touching the house.
What happens if I miss the inspection deadline?
San Bernardino County Fire issues a Notice to Abate. If you do not clear the hazard, the county performs the work and bills you through a property lien.
Compare other topics
See how Hesperia and San Bernardino compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool