Construction hours in Longmont, CO — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Under LMC § 10.20.110(D)(4), construction activity in a residential area or within 500 feet of a school is prohibited between 7:00 p.m. and 7:00 a.m. Monday through Saturday and before 9:00 a.m. on Sundays, unless temporarily approved by the economic development director.
LMC § 10.20.110(D)(4) — 'Construction activities' — bans 'any activity incidental to the erection, demolition, assembling, altering, installing or equipping of buildings, structures, roads or appurtenances thereof, including land clearing, grading, excavating and filling' between 7:00 p.m. and 7:00 a.m. Monday through Saturday or before 9:00 a.m. on Sundays, within a residential area or within 500 feet of a school. Temporary exceptions require approval by the economic development director. Even within permitted hours, construction noise must respect the daytime fixed-source ceiling in § 10.20.110(B): 55 dB(A) residential, 65 dB(A) commercial, 75 dB(A) industrial at 25 feet. 'Manifest necessity' is recognized as a defense if best-available control technology cannot achieve compliance and no reasonable alternative exists.
General municipal penalty: up to $999 fine and/or up to 180 days imprisonment under Longmont Municipal Court rules.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Longmont, CO
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Longmont, CO
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