Quiet Hours: 10:00 PM to 7:00 AM (stricter 'across property line' rule applies)
Residential Decibel Limit: Not specified; regulated by audibility and referenced standards in Section 9.12.070 (Day) / Not specified; regulated by audibility and referenced standards in Section 9.12.070 (Night)
Summary: San Luis Obispo, CA noise ordinances, detailed in Chapter 9.12 of the Municipal Code, regulate sound 24/7. During daytime (7 AM-10 PM), noise audible 50 feet from the property line is prohibited. Stricter rules apply from 10 PM-7 AM, making noise audible across any residential property line a violation. Penalties start at $350 for the first offense.