Commerce City, CO Noise Ordinances: Amplified Music & Outdoor Sound (2026)

Section 6-2011(a) of the Commerce City Revised Municipal Code defines unreasonable noise as any sound of a level and duration that is or tends to be injurious to human health or welfare, or that unreasonably interferes with the enjoyment of life or property. City agents make a prima facie determination of unreasonableness using a list of factors that is not exhaustive, and the presence or absence of noise amplification equipment, such as speakers or a PA system at a party or event, is one of the named factors alongside the time of day, the size of any gathering contributing to the noise, and the neighborhood or area involved.

Section 6-2011(b) then makes it unlawful to make, continue or cause any unreasonable noise, and bars knowingly permitting it on a premises or in a vehicle under a person's control; an owner or occupant present when the noise occurred is presumed to have known and permitted it. Section 6-2011(c) exempts specific activities, such as city-authorized events, church or school bells, and emergency vehicles, but amplified music at a private residence or business is not on that exemption list, so it is judged under the general unreasonableness standard, enforced as a civil infraction under Section 6-1003 in Commerce City Municipal Court.