Construction hours in Larimer County, CO — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Construction tools are exempt only 7:00 a.m.–8:00 p.m. in Fort Collins (all equipment muffled). Unincorporated Larimer County bars construction/demolition 7:00 p.m.–7:00 a.m. and caps daytime construction noise at 80 db(A).
Fort Collins Municipal Code § 20-25(6) exempts construction, drilling, earthmoving, excavating and demolition from the noise limits only when all motorized equipment has functioning mufflers and work occurs between 7:00 a.m. and 8:00 p.m. Outside those hours construction noise is unlawful. In unincorporated Larimer County, Ordinance 97-03 caps construction/demolition noise at 80 db(A) (7 a.m.–7 p.m.) and 75 db(A) at night, and prohibits such activity between 7:00 p.m. and 7:00 a.m. absent county authorization.
County: $30 first offense, $60 second within 30 days, $300 each thereafter. Fort Collins: summons under § 20-29 with penalty per § 1-15.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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