Noise Ordinances in Costa Mesa, CA (2026)
4 verified noise ordinances for Costa Mesa, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Construction Hours
Costa Mesa limits construction work to 7:00 a.m. to 7:00 p.m. Monday through Friday and 9:00 a.m. to 6:00 p.m. on Saturdays. Construction is barred entirely on Sundays and six named federal holidays under Municipal Code § 13-279.
Costa Mesa Construction Noise Hours
Some RestrictionsCosta Mesa, CA, Municipal Code § 13-279 (Exceptions for construction)
The provisions of this chapter shall not apply to the following: (a) Emergency machinery, vehicles, or work; or (b) Construction equipment, vehicles, or work between the following approved hours, provided that all required permits for such construction, repair, or remodeling have been obtained from the appropriate city departments. HOURS FOR CONSTRUCTION ACTIVITIES 7:00 a.m. through 7:00 p.m. M...
Barking Dogs
Costa Mesa treats a barking dog as a public nuisance once it barks continuously for 30 minutes or intermittently for 60 minutes in any 24-hour period. Municipal Code Section 3-113 lets the Police Department issue an administrative citation after a 10-day written warning, and every day the noise continues past that deadline counts as a separate offense.
Costa Mesa Barking Dog Nuisance Law
Some RestrictionsCosta Mesa Municipal Code §§ 3-8, 3-113, 3-114
"Barking dog" means a dog that barks, bays, cries, howls or makes any noise audible beyond the boundaries of the property on which the dog is situated 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, baying...
Leaf Blower Rules
Costa Mesa restricts leaf blowers in residential areas to 7 a.m. to 5 p.m. weekdays, 9 a.m. to 5 p.m. Saturdays, and noon to 5 p.m. Sundays and holidays. Section 20-10 caps blower noise at 65 decibels, bars operation within 10 feet of an open window, and requires each blower to carry the operator's business name and phone number.
Costa Mesa Leaf Blower Hours and Noise Limit
Some RestrictionsCosta Mesa, CA, Municipal Code § 20-10(a), (b), (e)
(a) Residential areas. In residential areas, or within 50 feet thereof, the use of leaf blowers is prohibited except during the hours of 7:00 a.m. to 5:00 p.m., Monday through Friday, 9:00 a.m. to 5:00 p.m. on Saturdays; and 12:00 noon to 5:00 p.m. on Sundays and legal holidays. (b) Maximum noise levels. Notwithstanding provisions of Chapter XIII, Noise Control of Title 13 of this Code, the max...
Amplified Music & Outdoor Sound
Costa Mesa limits amplified sound equipment mounted on advertising sound trucks under Section 9-140: the truck must be moving at least 10 mph while the amplifier runs, sound is banned within 100 yards of hospitals, schools, churches and city hall, and no permit can authorize operation between 1:00 p.m. and 3:00 p.m. or run longer than 30 days.
Costa Mesa Sound Truck & Amplifier Rules
Significant RestrictionsCosta Mesa, CA, Municipal Code § 9-140
Sound amplifying equipment shall not be operated unless the sound truck upon which equipment is mounted is operated at a speed of or at least 10 miles per hour, except when said truck is stopped or impeded by traffic. Where stopped by traffic, the said sound amplifying equipment shall not be operated for longer than one minute at each stop. Sound shall not be issued within 100 yards of hospital...
Looking for Orange County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Costa Mesa city rules.
Noise Ordinances in Orange County →