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Sonoma County, CA Special Events & Permits: Street Fair Rules (2026)

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

Key Facts

Permit threshold
Required over 50 participants
Application window
60 days to 5 years ahead
Insurance minimum
$1,000,000 liability coverage
Enforcing agency
Permit and Resource Management Dept.
Violation penalty
Infraction; up to 3-year permit ban

Summary

Sonoma County requires a public right-of-way special event permit for any street fair, celebration, or parade with more than 50 participants, issued by the Permit and Resource Management Department.

City-specific rules exist: Santa Rosa has its own street fair rules rules that differ from Sonoma County's county-level regulations. If you live in Santa Rosa, check the city-specific page instead.

No special event shall take place on Sonoma County highways which involves more than fifty (50) participants, unless the sponsoring persons, corporations, city, club, organization, association, etc. has applied for and been issued a special event permit pursuant to this article, unless exempt pursuant to the terms of this article.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 64 Update 2).

Full Breakdown

Under County Code Article VI (Sec. 15-24 through 15-34), any special event on unincorporated Sonoma County roads, including fairs, celebrations, carnivals, block parties and parades, needs a public right-of-way special event permit once more than 50 participants are involved. Organizers file with the Permit and Resource Management Department 60 days to 5 years ahead, pay board-set fees, carry at least $1,000,000 in liability insurance, and sign an indemnification agreement. This applies only outside the nine incorporated cities; Santa Rosa, Petaluma, Sonoma and the others issue their own separate event permits.

Violations & Fines

Violating the permit article is an infraction under Sec. 15-30. Noncompliance can trigger permit revocation and bar the organizer from new event permits for up to three years.

Frequently Asked Questions

Does Sonoma County require a permit for a street fair?
Yes: under County Code § 15-27, any special event on county right-of-way with more than 50 participants, including fairs and celebrations, needs a public right-of-way special event permit.
How far in advance must organizers apply?
Applications go to the Permit and Resource Management Department at least 60 days, and up to five years, before the event under § 15-28.
Does this apply inside Santa Rosa or the City of Sonoma?
No: this chapter governs only unincorporated county roads; incorporated cities like Santa Rosa and Sonoma issue their own separate event permits.

Sources & Official References

Other rules in Sonoma County

All Sonoma County rules

California rules heatmap·Compare Sonoma County to another location·View the California special events & permits overview

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Street Fair Rules in Cities Across Sonoma County