Amplified music rules in Middlesex County, MA — also called sound permit, PA system, or live music ordinances — set decibel limits, time-of-day restrictions, and when permits are required.
Amplified music in Middlesex County is regulated by individual city and town bylaws. Most communities prohibit amplified sound audible at property lines after 10pm or 11pm on weekends.
With no county government, amplified music rules come from each of the 54 Middlesex municipalities operating under MGL c.40 s.21 and MGL c.140 s.157, which addresses disturbance of the peace. Cambridge and Somerville, the densest cities, enforce strict rules: amplified sound that is plainly audible at 50 feet after 10pm (Sunday-Thursday) or 11pm (Friday-Saturday) is a violation. Boston-adjacent communities like Medford, Malden, and Watertown follow similar standards. Suburban towns often use an earlier 9pm or 10pm cutoff. One-time events such as block parties, weddings, or concerts generally require a permit from the local police department or town clerk, sometimes with a noise variance. Commercial venues with outdoor amplified music need specific approval under their entertainment license. Violations typically start at 150 to 300 dollars per offense.
Contact your local code enforcement office for specific penalty information.
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See how Middlesex County's amplified music & events rules stack up against other locations.
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