Construction hours in Douglas County, CO — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
In unincorporated Douglas County, construction noise may not exceed 80 dB(A) from 7:00 a.m. to 7:00 p.m. or 75 dB(A) overnight. Castle Rock separately prohibits construction noise 7 p.m.-7 a.m. weekdays and 6 p.m.-8 a.m. weekends/holidays.
Section 1703A.03 of the county Zoning Resolution caps construction-activity noise in every zone district at 80 dB(A) during the day and 75 dB(A) at night, for the period allowed by the construction permit or a reasonable completion period set by the Director. Within the Town of Castle Rock, the municipal code bars construction noise between 7 p.m. and 7 a.m. on weekdays and between 6 p.m. and 8 a.m. on weekends and holidays. Check with your specific town (Parker, Lone Tree, Castle Pines) for its own construction-hour window.
County: Zoning Resolution enforcement. Castle Rock: municipal noise offense reportable to police non-emergency at 303-663-6100.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Douglas County's construction hours rules stack up against other locations.
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