Decibel Limits: Newton vs Somerville
How do decibel limits rules compare between Newton, MA and Somerville, MA?
Newton and Somerville have similar restriction levels.
Newton, MA
Middlesex County
Newtons noise ordinance sets property-line decibel thresholds that differ by zoning district and time of day, with residential receivers protected most strictly.
View full Newton rules →Somerville, MA
Middlesex County
Somerville uses both plainly-audible standards and numeric decibel caps for specific sources, typically 65 to 75 dBA during day and 55 to 65 dBA at night measured at residential property lines.
View full Somerville rules →Key Facts Comparison
| Fact | Newton | Somerville |
|---|---|---|
| Residential day | About 55 dBA at property line | - |
| Residential night | About 45 dBA | - |
| Business | 60 to 65 dBA daytime | - |
| Impulse/tone penalty | 5 dBA adjustment | - |
| Exempt | Emergency, snow, DPW | - |
| Residential day limit | - | Approximately 65 dBA |
| Residential night limit | - | Approximately 55 dBA |
| Commercial day limit | - | 70 to 75 dBA |
| Leaf blower cap | - | 65 dBA at 50 feet |
| Measurement by | - | ISD and Somerville Police |
Highlighted rows indicate differences between cities.
Newton FAQ
How is sound measured for enforcement?
Newton uses calibrated Type 2 sound meters at the receiving property line during the time of complaint.
Are fireworks or alarms exempt?
Emergency equipment and some short-duration activities are exempt, though ongoing alarm malfunctions can be cited.
Somerville FAQ
Do the limits apply to HVAC units?
Yes. Fixed mechanical equipment is among the most-measured sources and often requires acoustic enclosures to meet nighttime limits.
Is the plainly-audible test subjective?
Somewhat, but it is legally valid and often used as the first enforcement step before a formal dBA measurement.
Compare other topics
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