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🌿 Landscaping Rules/Grass Height Limits

Grass Height Limits: Fremont vs Sunol

How do grass height limits rules compare between Fremont, CA and Sunol, CA?

Fremont has fewer restrictions than Sunol.

Fremont, CA

Alameda County

Some Restrictions

Fremont requires lawns and weeds kept below 6 inches citywide, and 4 inches in east foothill VHFHSZ defensible space zones. Overgrown lots are tagged for abatement each spring.

View full Fremont rules β†’

Sunol, CA

Alameda County

Heavy Restrictions

Alameda County requires weeds and grass to be kept below 12 inches in urbanized areas, with stricter 4-inch limits in Very High Fire Hazard Severity Zones under PRC 4291 defensible space rules.

View full Sunol rules β†’

Key Facts Comparison

FactFremontSunol
Flatland Limit6 inches-
VHFHSZ Limit4 inches-
Inspection SeasonApril through October-
Cure Period30 days-
EnforcementTax lien for costs-
Urban limit-12 inches
VHFHSZ limit-4 inches
Inspection season-May-June
Notice method-Annual mailing
Non-compliance-Tax lien abatement

Highlighted rows indicate differences between cities.

Fremont FAQ

Do ornamental grasses count?

Maintained ornamental and native grasses used as intentional landscape are generally exempt. The rule targets dry weeds and invasive annual grasses like wild oats and ripgut brome that become fuel when cured brown.

Who do I call to report a weedy vacant lot?

Call Fremont Fire Prevention at 510-494-4200 or use the Fremont 311 app. Include the parcel address and, if possible, the APN. Inspectors respond within 10 business days during abatement season.

Sunol FAQ

When is the weed abatement deadline?

Annual deadlines are typically in late May or early June; check your annual notice from the Alameda County Fire Department Weed Abatement Program.

Can I request an extension?

Extensions are sometimes granted for weather or hardship; contact the fire department weed abatement coordinator before the deadline.

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