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Alameda County, CA Property Maintenance: Property Blight (2026)

Light Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified April 2026

Key Facts

Ordinance
Nuisance Abatement via Code Enforcement
Blight
Junk, weeds, graffiti, dereliction
Timeline
10-30 day notice to abate
Penalty
Citations, fines, lien for abatement costs

Summary

Alameda County Nuisance Abatement Ordinance targets property blight including junk accumulation, overgrown weeds, graffiti, and derelict structures in unincorporated areas.

City-specific rules exist: Fremont, Hayward, San Leandro, Livermore, Berkeley, and Oakland have their own property blight rules that differ from Alameda County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Notwithstanding any other provision of law, a city, county, or city and county may adopt an ordinance establishing procedures for the abatement and removal, as public nuisances, of abandoned, wrecked, dismantled, or inoperative vehicles or parts thereof from private or public property, and for the recovery, pursuant to Section 25845 or 38773.5 of the Government Code, or assumption by the local authority, of costs of administration and the removal. (Amended by Stats. 1988, Ch. 126, Sec. 1.)

Source: Alameda County Code Title 6 Health & SafetyView official code

Full Breakdown

The Alameda County Nuisance Abatement Ordinance authorizes Code Enforcement to address property blight in Castro Valley, Ashland, Cherryland, San Lorenzo, Sunol, and other unincorporated areas. Prohibited conditions include accumulation of junk or debris visible from the right-of-way, overgrown weeds over 12 inches, graffiti not removed within 30 days, broken windows, derelict structures, and inoperative vehicles. Code Enforcement issues a notice to abate giving owners time to correct the condition, typically 10 to 30 days. Failure to comply results in administrative citations, fines, or county-performed abatement with costs assessed as a property lien. Report blight at (510) 670-5320.

Frequently Asked Questions

How do I report a blighted property in Ashland?
Call Alameda County Code Enforcement at (510) 670-5320 or submit a complaint online through the Community Development Agency website.
What happens if I ignore a blight notice?
The county can perform abatement and place a lien on your property for all costs plus administrative fees. Further violations may result in misdemeanor charges.

Sources & Official References

Other rules in Alameda County

Snow & Sidewalk ClearingSome RestrictionsParking Rules: Commercial & Oversized VehiclesSignificant RestrictionsParking Rules: Preferential Parking DistrictsSome RestrictionsParking Rules: Loading ZonesSome RestrictionsLandscaping Rules: Tree Removal & Heritage TreesSome RestrictionsWater Use Rules: Recycled Water RulesLight RestrictionsHistoric Preservation: Historic-Cultural MonumentsSignificant Restrictions

All Alameda County rules

California rules heatmap·Compare Alameda County to another location·View the California property maintenance overview

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Property Blight in Cities Across Alameda County

Oakland, CAFremont, CAHayward, CABerkeley, CASan Leandro, CALivermore, CACastro Valley, CA