Dark Sky Rules: Cambridge vs Newton
How do dark sky rules rules compare between Cambridge, MA and Newton, MA?
Cambridge and Newton have similar restriction levels.
Cambridge, MA
Middlesex County
Cambridge Zoning Ordinance requires outdoor lighting to be shielded and directed downward to minimize glare and light trespass, supporting Net Zero and energy efficiency goals.
View full Cambridge rules →Newton, MA
Middlesex County
Newton zoning requires shielded, downward-directed outdoor lighting in all districts. Commercial fixtures must be full cutoff with color temperatures not exceeding 3000K in residential areas.
View full Newton rules →Key Facts Comparison
| Fact | Cambridge | Newton |
|---|---|---|
| Fixture standard | Full cutoff shielded | - |
| Direction | Downward | - |
| Residential trespass | 0.1 fc at line | - |
| Commercial trespass | 1.0 fc at line | - |
| Complaints | Inspectional Services | - |
| Shielding | - | Full cutoff required |
| Residential Color | - | 3000K max |
| Commercial Color | - | 4000K max |
| Pole Height Cap | - | 20 feet |
| Property Line Limit | - | 0.1 foot-candle |
Highlighted rows indicate differences between cities.
Cambridge FAQ
Are full-cutoff fixtures required?
Yes, Cambridge requires shielded, downward-directed outdoor lighting to reduce glare and trespass.
Can I use a floodlight in my backyard?
Yes if aimed downward and not creating glare onto neighbors or streets; motion activated is preferred.
Newton FAQ
Are there rules for residential outdoor lights?
Yes. New residential fixtures must be shielded downward and use warm color temperature (3000K or lower). Existing lighting installed before 2010 is generally grandfathered unless a major renovation occurs.
Can I install bright floodlights for security?
Motion-activated floodlights are allowed but must be aimed downward and cannot cast more than 0.1 foot-candle at neighboring property lines.
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