Boulder, CO Short-Term Rentals: Noise Rules (2026)

Boulder folds short-term-rental party complaints into its general nuisance-party ordinance rather than writing STR-specific quiet hours. in a residential district), along with littering, trespass, fighting words, and fires on public property. Subsection (c) separately makes an open keg of beer visible from a street, porch, or neighboring yard a nuisance on its own, regardless of noise. Once a police officer declares a gathering a public nuisance, subsection (d) requires every guest who does not live there to leave immediately and obey the officer's dispersal order; refusing is itself a violation.

Because short-term rentals are "rental property" under Chapter 10-3, operators must give tenants written notice of Section 5-3-11 under Section 12-2-4(a)(1)(B), "Written Disclosures Required," alongside the fireworks and trash-sign ordinances, so guests are formally on notice before check-in. Enforcement runs through Boulder Police response to a neighbor complaint and prosecution in Boulder Municipal Court; because Title 5 offenses share the general penalty in Section 5-2-4, a nuisance-party conviction can carry a fine of up to $2,650 per violation, up to ninety days in jail, or both. Repeated STR nuisance citations can also support license-enforcement action under Chapter 10-3.