Municipal Code
The Boston Municipal Code (chapter 16, section 26) sets the general standard for noise that is unreasonable or excessive: louder than 50 decibels between the hours of 11:00 p.m. and 7:00 a.m., or louder than 70 decibels at all other hours. The code includes specific provisions regarding car alarms, construction hours, and loud speakers and other amplification devices.
Boston Municipal Code (chapter 16, section 26) »

Boston Air Pollution Control Commission (APCC)
The APCC has adopted regulations based on the city's ordinance. In particular, the APCC regulations distinguish among residential, business, and industrial districts in the city, and specify restrictions on construction noise.
APCC Regulations »

Enforcement & Reporting
The APCC shares with the Boston Police Department (BPD) responsibility for enforcing the city's noise ordinance.

Type of Noise	Report To:
Car Alarms Loud Parties Amplification Devices	Boston Police Party Line 617-343-5500 or contact your neighborhood's district police station
Construction Sites Industrial Sites Ventilation and Air-Conditioning Equipment	Air Pollution Control Commission 617-635-3850 APCC@cityofboston.gov
Airplane	The City of Boston has no authority over airplane noise. Questions can be addressed to Massport.

Contact
For more information or to report possible violations of air pollution laws or regulations, please contact:

Air Pollution Control Commission
Boston Environment Department
City Hall, Room 805
Boston, MA 02201
617-635-3850
APCC@cityofboston.gov