Pasadena, CA Noise Ordinances: Decibel Limits (2026)

Pasadena Municipal Code Chapter 9.36 establishes quantitative noise standards. Section 9.36.050 makes it unlawful for any person to create noise exceeding the ambient noise level at the property line of any property by more than 5 decibels. Ambient noise is defined in Section 9.36.040 as the all-encompassing noise associated with a given environment, averaged over 15 minutes excluding isolated identifiable sources. Adjustments apply for steady audible tones, repeated impulsive noise, and noise occurring for limited time periods. Individual pieces of construction equipment are limited to 85 dBA at a distance of 100 feet under Section 9.36.070. Section 9.36.060 sets interior noise standards for multifamily residential property at 50 dBA. The ordinance provides for both criminal and civil enforcement, with the city attorney authorized to pursue injunctive relief.