Orange County, CA Noise Ordinances: Quiet Hours (2026)
Quiet hours in Orange County, CA, also called the noise ordinance, nighttime noise rules, or residential quiet time, define the hours during which excessive noise is prohibited.
Key Facts
- Daytime exterior limit
- 55 dB(A), 7 a.m.–10 p.m.
- Nighttime exterior limit
- 50 dB(A), 10 p.m.–7 a.m.
- Grace threshold
- 30 min/hour before violation
- Scope
- Unincorporated Orange County only
- Enforcement
- Orange County Sheriff / code enforcement
Summary
Unincorporated Orange County caps residential exterior noise at 50 dB(A) from 10 p.m. to 7 a.m., down from the 55 dB(A) daytime limit.
(a)The following noise standards, unless otherwise specifically indicated, shall apply to all residential property within a designated noise zone: ...1 55 dB(A) 7:00 a.m.—10:00 p.m. 50 dB(A) 10:00 p.m.— 7:00 a.m. ...(b)It shall be unlawful for any person at any location within the unincorporated area of the County to create any noise...when the foregoing causes the noise level...to exceed: (1)The noise standard for a cumulative period of more than thirty (30) minutes in any hour;
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 157).
Full Breakdown
In unincorporated Orange County, Noise Zone 1 residential property is limited to 55 dB(A) from 7 a.m. to 10 p.m. and 50 dB(A) from 10 p.m. to 7 a.m. It is unlawful to create noise on property you own, lease, occupy or control that exceeds the standard for more than thirty minutes in any hour, measured on other residential property. Impact, simple-tone, speech or music noise gets a further 5 dB(A) cut.
Violations & Fines
Civil and criminal enforcement under the County noise ordinance; separately, the Sheriff can cite or arrest for a residential disturbance nuisance between 10 p.m. and 7 a.m. under Title 3, Division 15, with abatement costs up to $500 for repeat responses.
Frequently Asked Questions
Does this apply inside Anaheim or Santa Ana?
What if noise is only 5 dB(A) over the limit?
Sources & Official References
Other rules in Orange County
How Orange County compares: Cities with the Strictest Noise Ordinances·California rules heatmap·Compare Orange County to another location·View the California noise ordinances overview
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