Portland, ME Noise Ordinance
Quiet Hours: Not specified for all noise, but specific restrictions apply. For construction in residential zones: 7PM-7AM (Sept-May) and 8PM-7AM (June-Aug), no construction before 8AM on Sat/Sun/holidays. For entertainment: 1AM-7AM (defined as after-hours requiring special addendum); indoor entertainment 8AM-1AM. For loading/unloading scrap metal: 9PM-7AM. For commercial establishments, permissible sound levels are 55 dBA between 9 PM and 7 AM at lot boundaries.
Residential Decibel Limit: Not specified generally; 50 dBA for construction in R-zones (daytime limit is implied higher, but not explicitly stated). (Day) / 50 dBA for construction activities in R-zones between 7PM-7AM (Sept-May) or 8PM-7AM (June-Aug). For commercial establishments bordering residential, 55 dBA at lot boundaries (9PM-7AM). (Night)
Summary: Portland, ME's noise ordinances, primarily found in City Code Chapter 17: Offenses, Miscellaneous Provisions and the Entertainment Sound Ordinance (Chapters 4 and 15), generally prohibit loud, unnecessary, or unusual noises that disturb peace. Specific quiet hours and decibel limits apply to construction, entertainment venues, and certain vehicle operations. Violations can result in fines ranging from $50 for vehicle alarms to $2,000 for repeat entertainment noise offenses.