Quiet Hours: Weekdays: 10PM-7AM; Weekends: 10PM-8AM (general). Construction: Weekdays 6:30PM-7AM, Saturdays 6PM-8AM, Sundays & Federal Holidays all day. Real Property Maintenance: Weekdays 6PM-8AM, Sundays & Federal Holidays all day.
Residential Decibel Limit: 55 dBA (Day) / 50 dBA (Night)
Summary: Newport Beach, CA noise ordinances, primarily found in Municipal Code Chapters 10.26 and 10.28, prohibit loud, unreasonable noise exceeding set decibel limits and specific quiet hours. Residential areas must not exceed 55 dBA daytime and 50 dBA nighttime. Construction is restricted, and a hotline exists for short-term rental complaints. Violations can lead to citations and escalating fines.