Fort Collins, CO Public Conduct: Loud Party Ordinance (2026)

Section 17-131 defines a nuisance gathering as a social gathering or party at a private place that a reasonable person would find interferes with the enjoyment of life or disturbs neighbors or passersby, and that also produces one of a listed set of conditions: rioting, unlawfully carrying or possessing an open container of alcohol in public, unlawful sale or consumption of alcohol, unlawful marijuana possession or consumption, public urination or defecation, illegal dumping of trash, property destruction, traffic obstruction that interferes with emergency access, excessive or unreasonable noise, or conduct endangering neighborhood safety including public nudity.

Section 17-132(a) makes the owner, occupant, tenant or anyone with possessory control of the private place criminally liable as host if they knowingly permit the gathering to become a nuisance gathering, and presence at the scene is prima facie evidence of control. Subsection (b) requires all attendees to disperse immediately on a police officer's order once a gathering is declared a nuisance gathering, and non-domiciled attendees who refuse commit a separate misdemeanor. Section 17-133 lets the City bill the responsible host for the cost of abatement, including police and Poudre Fire Authority personnel time, with a lien against the property if unpaid within 30 days plus a ten percent penalty; a host who cleans up trash within 12 hours of police contact avoids the City's cleanup costs under the Section 17-130 definitions.