Industrial and commercial noise is governed by Chapter 9.16 plus zoning. Colorado's CRS 25-12-103 caps commercial noise at 60/55 dB(A) and industrial at 80/75 dB(A) (day/night), measured 25 feet from the property line.
Noise from businesses, warehouses and industrial operations in Castle Rock is regulated under Municipal Code Chapter 9.16 (Noise Control) together with the Town's zoning / development standards, which separate industrial and commercial uses from residential neighborhoods. Colorado Revised Statute 25-12-103 supplies the zone-based dB limits measured 25 feet or more from the property line: commercial 60 dB(A) day / 55 dB(A) night; light industrial 70/65; industrial 80/75. Noise exceeding those levels is prima facie evidence of a public nuisance. A source near a residential boundary is judged against the more protective residential limit. Castle Rock, as a home-rule town, enforces these directly within town limits.
Nuisance noise from a business can trigger Code Compliance action and municipal fines; persistent violations may affect zoning/permit compliance. Report to 303-663-6100.
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