Broomfield, CO Public Conduct: Loud Party Ordinance (2026)

Section 9-34-020, in Chapter 9-34, Disturbing the Peace, makes it unlawful for any person to disturb or tend to disturb the peace of others by violent, tumultuous, offensive or obstreperous conduct, by loud or unusual noises, or by unseemly, profane, obscene or offensive language calculated to provoke a breach of the peace. Critically, the same sentence extends liability to any person who permits such conduct in any house or upon any premises owned or possessed by them, or under their management or control, when it was within their power to prevent it, so that others in the vicinity are or may be disturbed.

That clause is what makes a host or property manager, not only the noisy guest, chargeable for an out-of-control party. The chapter sits alongside Section 9-34-010, which separately bars disturbing religious worship, and Section 9-34-040, which carves out an exemption for lawful assembly, picketing, public speaking or other lawful means of expressing opinion. Section 9-34-050 adds a separate failure-to-desist offense for refusing a lawful police order to disperse when a gathering is creating a substantial danger to persons or property. The disturbing-the-peace language traces to Ordinance 292, Section 13, from 1977 and has not been substantively amended since.

Because Chapter 9-34 does not set its own fine, a conviction is punished under the citywide general penalty in Section 1-12-020, up to a $2,650.00 fine, up to 364 days in jail, or both.