Portland, ME
Noise Code

In residential (R-zones) areas, from September 1st to May 31st, no person shall engage in construction activities generating noise exceeding fifty (50) decibels between 7:00 p.m. and 7:00 a.m. the following day, within 500 feet. Generally, construction noise is prohibited before 7 a.m. and after 6 p.m. daily, and all day on Sundays and six legal holidays. In the B-3 Downtown Business Zone, construction and maintenance activities are exempted between 7 a.m. and 9 p.m.

Operating any radio, musical instrument, phonograph, or other sound-producing device in a manner that disturbs the peace, quiet, and comfort of neighboring inhabitants and passers-by is prohibited. The use of loudspeakers or amplifiers for commercial advertising or public attraction is considered loud and unnecessary noise. Indoor entertainment without an 'Expanded Entertainment Addendum' is generally permitted from 8 a.m. to 1 a.m. the following day, with a 92 dBA limit. After-hours entertainment is from 1 a.m. to 7 a.m.

No person shall make, continue, or cause to be made or continued any loud, unnecessary or unusual noises which shall either annoy, disturb, injure or endanger the comfort, repose, health, peace or safety of others, which includes animal noises.

Loading or unloading of scrap metal into or from ships, vessels, or barges is prohibited between 9:00 p.m. and 7:00 a.m. Creation of loud, unnecessary or unusual noises on public rights-of-way that annoy, disturb, injure or endanger the comfort, repose, health, peace or safety of others is prohibited. This includes sounding horns except as a danger warning.