Amplified music rules in San Mateo, CA — also called sound permit, PA system, or live music ordinances — set decibel limits, time-of-day restrictions, and when permits are required.
San Mateo regulates amplified sound under SMMC Section 7.30.080. Handheld amplified sound equipment cannot exceed 10 watts. All amplified sound must comply with the maximum permissible sound levels in Section 7.30.040. Residential Noise Zone 1 limits are 50 dB at night and 60 dB during the day.
Amplified sound in San Mateo is specifically regulated by Section 7.30.080 of the noise ordinance. Handheld amplified sound equipment shall not exceed 10 watts. All amplified music and sound must comply with the maximum permissible sound levels established in Section 7.30.040 for the applicable noise zone. In residential Noise Zone 1, limits are 50 dB at night (10 PM-7 AM) and 60 dB during the day (7 AM-10 PM). Noise Zone 2 (multi-family residential) allows 55 dB night and 60 dB day. Sound performances and special events approved by the city may operate at up to 80 dB measured at 50 feet. The city's downtown entertainment venues must manage amplified sound to meet noise zone standards at their property lines.
Exceeding noise zone limits with amplified sound violates Chapter 7.30. Citations may be issued for first violations. Persistent violators face escalating penalties.
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See how San Mateo's amplified music & events rules stack up against other locations.
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