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Contra Costa County, CA Parking Rules: Commercial & Oversized Vehicles (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified June 2026

Key Facts

County-Wide Commercial Vehicle Ban
None identified
General Limit
72 hours (Sec. 46-4.004)
State Authority
CA Vehicle Code Sec. 22507
Abandoned Vehicles
Division 430

Summary

Contra Costa County has no specific county-wide ordinance restricting where commercial vehicles may park on public roads beyond the general 72-hour limit. State law (California Vehicle Code) governs most commercial-vehicle parking conduct.

City-specific rules exist: San Ramon, Brentwood, Richmond, Antioch, and Martinez have their own commercial & oversized vehicles rules that differ from Contra Costa County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Any vehicle parked or left standing on a county road for seventy-two or more consecutive hours may be removed as provided in the Vehicle Code.

Source: CCC Ordinance Code Title 4View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Ordinance Code: Supplement 103).

Full Breakdown

Research of Contra Costa County Ordinance Code Title 4, Division 46 (Traffic Regulations) and Title 8 zoning provisions did not identify a county-wide ordinance that specifically restricts overnight or residential-area parking of commercial vehicles in unincorporated areas. The general on-street parking limit of 72 consecutive hours under Sec. 46-4.004 applies to commercial vehicles parked on county roads. California Vehicle Code Section 22507 authorizes local agencies to restrict commercial-vehicle parking by signed ordinance, but in unincorporated Contra Costa County such restrictions, where they exist, are typically posted on a street-by-street basis rather than imposed county-wide. Abandoned commercial vehicles are subject to Division 430 (Abandoned Vehicles).

Violations & Fines

Commercial vehicles parked more than 72 hours on a county road may be towed under Sec. 46-4.004 and the California Vehicle Code. Signed, posted street-specific restrictions are enforced by the Sheriff.

Frequently Asked Questions

Can a semi-truck or delivery truck park in front of my house in unincorporated Contra Costa County?
There is no county-wide ordinance prohibiting it, but the truck cannot remain on a county road for more than 72 consecutive hours under Sec. 46-4.004, and posted street signs may impose stricter limits.
What about parking a work truck or trailer at my home?
On private property, commercial trailers and work vehicles may be subject to the screening rules in Sec. 84-68.1404 if they fit the definition of a stored vessel or trailer. Contact Code Enforcement at (925) 655-2710 to verify.

Sources & Official References

Other rules in Contra Costa County

All Contra Costa County rules

California rules heatmap·Compare Contra Costa County to another location·View the California parking rules overview

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Commercial & Oversized Vehicles in Cities Across Contra Costa County