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Santa Clara County, CA Property Maintenance: Vacant Lot Maintenance (2026)

Heavy Restrictions

Verified 1 month ago|Source: Santa Clara County Weed Abatement →

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Key Facts

Weed abatement: Annual, deadline May 15
Defensible space: 100 ft in FHSZ per PRC 4291
Non-compliance: County abates, tax lien added
Vacant registry: Foreclosing banks within 10 days

City-specific rules exist: Mountain View, Palo Alto, Sunnyvale, Santa Clara, and San Jose have their own vacant lot maintenance rules that differ from Santa Clara County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Full Breakdown

Owners of vacant lots in unincorporated Santa Clara County must maintain their parcels free of fire hazards, blight, and illegal dumping. The county's annual Weed Abatement Program, administered by the Department of Agriculture and Environmental Management, inspects lots and issues compliance notices in April requiring weed clearance by early May (typically May 15). Vacant lots in designated Fire Hazard Severity Zones (very high, high, and moderate) must maintain 100 feet of defensible space under Public Resources Code 4291, with grasses no taller than 4 inches in the first 30 feet. Owners who fail to comply face county crews performing abatement with costs (often 500-5,000 dollars) added as tax roll liens. Vacant lots must also be kept free of illegal dumping, construction debris, and unpermitted structures. Fencing to prevent trespass is recommended for lots fronting public roads. Bank-owned or foreclosed properties must register with the county vacant property registry within 10 days of taking possession.

Frequently Asked Questions

Do I have to clear my vacant lot if no one lives there?

Yes. Santa Clara County requires annual weed and fire hazard abatement on all vacant parcels regardless of occupancy, with stricter rules in fire hazard zones.

What if the county does the work?

County contractor costs plus administrative fees (often totaling 1,000-5,000 dollars) are added to your property tax bill as a special assessment. Non-payment can lead to tax default.

How does Santa Clara County compare?

See how Santa Clara County's vacant lot maintenance rules stack up against other locations.

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Santa Clara County, CA Property Maintenance: Vacant Lot Maintenance (2026)

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