Grass Height Limits: Hesperia vs San Bernardino
How do grass height limits rules compare between Hesperia, CA and San Bernardino, CA?
San Bernardino has fewer restrictions than Hesperia.
Hesperia, CA
San Bernardino County
Hesperia contracts with San Bernardino County Fire Hazard Abatement to enforce defensible space. Weeds and grasses must be cut to no more than 4 inches in height within 30 feet of any structure. The High Desert/Mojave WUI environment makes overgrown vegetation a year-round fire hazard, especially tumbleweeds in the fall.
View full Hesperia rules →San Bernardino, CA
San Bernardino County
San Bernardino requires owners to keep grass and weeds below nuisance thresholds year-round. In foothill fire zones, vegetation must be mowed to four inches or less during fire season.
View full San Bernardino rules →Key Facts Comparison
| Fact | Hesperia | San Bernardino |
|---|---|---|
| Max Height | 4 inches within 30 ft of structure | - |
| State Floor | PRC §4291 — 100 ft defensible space (WUI) | - |
| Enforcement | SB County Fire Hazard Abatement (contracted) | - |
| Inspection Cycle | Spring (weeds) and Fall (tumbleweeds) | - |
| Complaint Line | (760) 995-8140 option 5 | - |
| Nuisance code | - | SBMC Chapter 8.30 treats overgrown vegetation as a nuisance |
| Fire season rule | - | 4 in. or less required in VHFHSZ defensible space zones |
| Annual inspections | - | County Hazard Abatement Notices issued each spring |
| Forced abatement | - | County contracts mowing and bills owner plus admin fees |
| Citations | - | City administrative fines start at roughly 100 dollars |
Highlighted rows indicate differences between cities.
Hesperia FAQ
How tall can grass and weeds be in Hesperia?
Weeds and grasses must be cut to no more than 4 inches in height within 30 feet of any structure. State law (PRC §4291) also requires 100 feet of defensible space around structures in fire hazard zones.
Who enforces weed abatement in Hesperia?
San Bernardino County Fire Hazard Abatement enforces the program under contract with the City. They conduct spring and fall parcel inspections and mail courtesy notices before any abatement action.
San Bernardino FAQ
How tall can my grass legally be in San Bernardino?
There is no single inch threshold citywide, but front-yard grass over roughly 6 in. draws nuisance citations, and foothill parcels must be cut to 4 in. in fire season.
What if I cannot mow my property on time?
Contact San Bernardino Code Enforcement or the county Hazard Abatement program before the deadline; extensions are rare but possible for documented hardship.
Can the county mow my property and bill me?
Yes. If you miss the abatement deadline, the county contracts the work and adds it to your property tax bill as a lien or special assessment.
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