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Noise Ordinances in Orange County, CA (2026)

8 county-level rules, plus city-specific rules for 10 cities in Orange County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Orange County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Quiet Hours

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.

Orange County Nighttime Noise Curfew

Some Restrictions

Orange County Codified Ordinances § 4-6-5

(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)T...

Construction Hours

Unincorporated Orange County exempts construction, repair, remodeling, and grading noise from the county noise ordinance only between 7 a.m. and 8 p.m. on weekdays and Saturdays; construction noise loses that exemption entirely on Sundays and federal holidays.

Orange County Construction Noise Hours

Some Restrictions

Orange County Codified Ordinances § 4-6-7(e)

Noise sources associated with construction, repair, remodeling, or grading of any real property, provided said activities do not take place between the hours of 8:00 p.m. and 7:00 a.m. on weekdays, including Saturday, or at any time on Sunday or a Federal holiday.

Barking Dogs

Unincorporated Orange County treats a dog barking 30+ minutes straight, or 60+ minutes cumulatively in 24 hours, as a nuisance subject to escalating OC Animal Care civil fines starting at $250.

Orange County Barking Dog Nuisance Fines

Some Restrictions

Orange County Codified Ordinances § 4-1-3

Barking dog means a dog that barks, bays, cries, howls or makes any noise for an extended period of time to the disturbance of any person at any time of day or night, regardless of whether the dog is physically situated in or upon private property. Such extended period of time shall consist of incessant barking for 30 minutes or more in any 24-hour period, or intermittent barking that accumulat...

Leaf Blower Rules

Unincorporated Orange County has no separate leaf-blower ordinance. Leaf blowers fall under the County noise code's property-maintenance hours (Sec. 4-6-7(i)), and statewide California law (AB 1346 / CARB) now bars sales of new gas-powered leaf blowers and other small off-road engines.

Orange County Leaf Blower Rules

Some Restrictions

California AB 1346 (Berman, 2021) — Air pollution: small off-road engines (Health & Safety Code § 43018.11)

(a) The Legislature finds and declares all of the following: (1) Small off-road engines (SORE), which are used primarily in lawn and garden equipment, emit high levels of air pollutants, including oxides of nitrogen (NOx), reactive organic gases (ROG), and particulate matter (PM). NOx and ROG together contribute to formation of ozone, a criteria pollutant with a national ambient air quality sta...

Amplified Music & Outdoor Sound

Amplified sound systems, music and live music are banned in Orange County parks, beaches and recreational areas unless the area is specifically designated and a written permit from the OC Parks Director is obtained first.

Orange County Park Amplified Sound Permit

Significant Restrictions

Orange County Codified Ordinances § 2-5-26

No person shall set up, use, operate or maintain an amplified sound system, music and live music within any park, beach or recreational area except in those areas specifically designated, nor shall any person set up, use, operate or maintain an amplified sound system, music and live music without first obtaining a written permit. The Director, or his designated agents are expressly given the au...

Aircraft Noise

Orange County bars regularly scheduled commercial flights at John Wayne Airport from departing between 10 p.m. and 7 a.m. (8 a.m. Sundays) or arriving between 11 p.m. and 7 a.m. (8 a.m. Sundays), enforced by the Airport Director under the county's aircraft noise ordinance.

Orange County John Wayne Airport Noise Curfew

Significant Restrictions

Orange County Codified Ordinances § 2-1-30.4

Curfew. No aircraft may engage in regularly scheduled commercial operations at John Wayne Airport as follows: (i) for departures between the hours of 10:00 p.m. and 7:00 a.m. (8:00 a.m. on Sundays) (local time), as measured at any John Wayne Airport noise monitoring station; or (ii) arrivals between the hours of 11:00 p.m. and 7:00 a.m. (8:00 a.m. on Sundays) (local time), as measured at any Jo...

Decibel Limits

In unincorporated Orange County, noise from any source, including commercial and industrial operations, that hits 55 dB(A) at a neighboring residential property from 7 a.m. to 10 p.m., or 50 dB(A) overnight, violates the county's exterior noise standard.

Orange County Industrial Noise Limits (Unincorporated)

Some Restrictions

Orange County Codified Ordinances § 4-6-5

The entire territory of Orange County, including incorporated and unincorporated territory, is hereby designated as "Noise Zone 1." ... 1 55 dB(A) 7:00 a.m.—10:00 p.m. / 50 dB(A) 10:00 p.m.—7:00 a.m. ... It shall be unlawful for any person at any location within the unincorporated area of the County to create any noise ... when measured on any other residential property ... to exceed[.]

Vehicle Noise

In unincorporated Orange County, it's a misdemeanor to operate a vehicle in a way reasonably likely to disturb the peace of any neighborhood or person through noise, dust, smoke or fumes.

Orange County Bans Disturbing Vehicle Noise

Some Restrictions

Orange County Codified Ordinances § 3-8-48

It shall be unlawful for any person to operate a vehicle referred to in section 3-8-47 of this Code in such a manner as is reasonably likely to disturb the peace or quiet of any neighborhood or person by reason of noise, dust, smoke or fumes.

Noise Ordinances by City in Orange County

10 cities in Orange County have their own noise ordinances rules. Each link goes to that city's dedicated page with code citations.

All Orange County ordinances

See every category we cover for Orange County: parking, noise, fences, fires, animals, pools, and more.

Orange County Ordinance Hub →