Sonoma County, CA Noise Ordinances: Amplified Music & Outdoor Sound (2026)
Amplified music rules in Sonoma County, CA, also called sound permit, PA system, or live music ordinances, set decibel limits, time-of-day restrictions, and when permits are required.
Key Facts
- Amplified-music ordinance
- None; governed by General Plan Noise Element
- Daytime L50 standard
- 50 dBA at adjacent property line
- Nighttime L50 standard
- 45 dBA at adjacent property line
- Speech/music penalty
- Standards reduced by 5 dBA
- Party noise enforcement
- Sheriff under Penal Code 415
Summary
Unincorporated Sonoma County has no dedicated amplified-music ordinance, but the General Plan Noise Element treats amplified sound as especially intrusive: stationary-source standards are reduced by 5 dBA for noise consisting primarily of speech or music. Loud amplified music can also be cited under state disturbing-the-peace law.
Quiet hours shall be from 10:00 p.m. to 7:00 a.m. ... Outdoor amplified sound shall not be allowed at any time associated with a vacation rental. ... Reduce the applicable standards above by five (5) dBA for simple tone noises, noises consisting primarily of speech or music, or for recurring impulsive noises, such as dog barking.
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
Sonoma County does not have a stand-alone ordinance regulating amplified music, loudspeakers or sound systems in the unincorporated area. The relevant standards come from the General Plan Noise Element. ) the L50 limit drops to 45 dBA. Critically, Policy NE-1c directs the County to reduce these standards by five dBA for 'noises consisting primarily of speech or music', recognizing that amplified music is more disturbing than its raw decibel reading suggests. These standards are applied primarily when the County reviews new projects, use permits and special-event proposals such as concerts at wineries and event venues.
For spontaneous loud music from a party or business, the Sheriff enforces California Penal Code section 415, which prohibits maliciously and willfully disturbing another person by loud and unreasonable noise. Because there is no fixed countywide music curfew, persistent amplified-music problems at a permitted venue are best raised with Permit Sonoma, while one-off party noise is a Sheriff matter.
Violations & Fines
Permitted venues that exceed the General Plan stationary-source standards (reduced 5 dBA for speech/music) can be conditioned or face permit action through Permit Sonoma. Spontaneous loud amplified music is enforced by the Sheriff under Penal Code 415 (up to 90 days jail, up to $400 fine, or both).
Frequently Asked Questions
How loud can amplified music be in unincorporated Sonoma County?
Who handles a neighbor's loud party music?
Sources & Official References
Other rules in Sonoma County
California rules heatmap·Compare Sonoma County to another location·View the California noise ordinances overview
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