Massachusetts has no statewide dark-sky lighting law for private property, and Hampshire County cannot make one. Any shielded-lighting or dark-sky requirement comes from a city or town zoning bylaw or site-plan condition, which vary widely across Northampton, Amherst, and Easthampton.
No Massachusetts statute requires dark-sky or full-cutoff lighting on private homes and businesses, and Hampshire County, abolished in 1999, has no ordinance power to impose one. Where dark-sky rules exist they come from a municipal zoning bylaw or from site-plan and special-permit conditions adopted under MGL c.40A. Several valley communities require shielded, downward-directed fixtures in new commercial development or near residential zones, and college-town centers like Amherst and Northampton weigh glare and light spill in site-plan review. Standards are set community by community, so a fixture allowed in one town may be restricted in the next. Enforcement runs through the municipal building department and planning board, never the county.
There is no county or state dark-sky citation for private property. A city or town enforces its own lighting bylaw or site-plan condition through the building inspector or planning board, requiring a noncompliant fixture to be reshielded or replaced.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Hampshire County, MA
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See how Hampshire County's dark sky rules rules stack up against other locations.
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