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Sonoma, CA Parking Rules: Commercial & Oversized Vehicles (2026)

Significant Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Weight threshold: 10,000+ lbs GVWR (SMC § 10.56.051)
Where banned: Residential districts, on-street parking/standing
Exceptions: Active delivery, or permitted construction material delivery
Excluded vehicles: Recreational vehicles, personal-use vehicles
Violation class: Infraction (SMC § 10.56.051)
Current through: Ordinance 13-2025 (Dec. 3, 2025)

Summary

In residential districts within the City of Sonoma, it is unlawful to park or stand a commercial vehicle rated 10,000 pounds gross vehicle weight or more under Sonoma Municipal Code § 10.56.051, unless it is actively delivering goods or permitted construction materials nearby. Personal-use RVs are excluded from the ban, and a violation is expressly an infraction.

It is unlawful to park or stand on any street in a residential district any commercial vehicle having a manufacturer's gross vehicle weight rating of 10,000 pounds or more, except commercial vehicles when actually in use to deliver or pick up goods, wares or merchandise from or to any building or structure in the vicinity, or when actually in use to deliver materials to be used in the bona fide repair, alteration, remodeling or construction of any building or structure in the near vicinity for which a building permit has been obtained. This section does not apply to recreational vehicles or other vehicles kept for purely personal use. Violation of this section is an infraction.

View official code

Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 13-2025, passed December 3, 2025).

Full Breakdown

" The section also carves out recreational and personal vehicles: it "does not apply to recreational vehicles or other vehicles kept for purely personal use," even if such a vehicle exceeds the 10,000-pound threshold. 050. 60, for any vehicle exceeding a three-ton gross weight limit. Current through Ordinance 13-2025, passed December 3, 2025.

Violations & Fines

Section 10.56.051 states directly, "Violation of this section is an infraction." Under the citywide general penalty in § 1.12.010, that carries a fine of up to $100 for a first offense, $200 for a second violation of the same section within a year, and $500 for a third or subsequent violation.

Frequently Asked Questions

Can I park my box truck overnight in front of my Sonoma house?

Not if it is a commercial vehicle rated 10,000 pounds gross vehicle weight or more. SMC § 10.56.051 bars parking or standing such vehicles on any residential-district street unless they are actively delivering or picking up goods, or delivering materials for permitted construction work nearby.

Does the commercial vehicle parking ban apply to my personal RV?

No. SMC § 10.56.051 expressly states the residential parking restriction "does not apply to recreational vehicles or other vehicles kept for purely personal use," even if the vehicle exceeds the 10,000-pound threshold that applies to commercial trucks.

Can a delivery truck stop in a Sonoma residential neighborhood to make a delivery?

Yes. SMC § 10.56.051 allows a heavy commercial vehicle to park briefly in a residential district while actually delivering or picking up goods from a nearby building, or delivering materials for a permitted repair, remodel or construction project in the vicinity.

What is the penalty for illegally parking a semi-truck in a Sonoma residential street?

SMC § 10.56.051 itself specifies that a violation is an infraction, which under the citywide penalty schedule in SMC § 1.12.010 carries a fine of up to $100 for a first offense, $200 for a second, and $500 for a third or subsequent violation within a year.

Sources & Official References

[1]Sonoma Municipal Code

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