Noise Rules: Boulder vs Longmont

Can STR guests have parties?

Most cities prohibit parties or events exceeding the permitted occupancy at STR properties.

What happens with repeated complaints?

Multiple verified complaints may result in permit revocation.

What are quiet hours for a Longmont short-term rental?

The City of Longmont does not impose STR-specific quiet hours, but every STR guest is subject to LMC Chapter 10.20, which makes it unlawful between 10:00 p.m. and 7:00 a.m. to make noise audible at 25 feet from the source unless the sound stays entirely on private property. Daytime noise is also regulated against an 'A'-weighted sound pressure standard. STR operators typically post 10 p.m.-7 a.m. quiet hours in their house rules to align guests with city law.

Can repeated noise complaints affect my STR license renewal?

Yes. While the STR program does not contain an automatic 'three strikes' revocation, the program's stated purpose is to ensure rentals do not create nuisances for the surrounding neighborhood, and Code Enforcement tracks complaints by address. Documented repeated noise violations under LMC Chapter 10.20 tied to a licensed STR can be raised at the annual license renewal as evidence the rental is creating ongoing nuisance, and the city retains discretion to deny renewal.

Who do I call about a noisy short-term rental in Longmont?

For an active disturbance, call Longmont Public Safety non-emergency dispatch; officers can respond and issue citations under LMC Chapter 10.20. For pattern complaints or daytime non-emergency issues tied to a specific STR property, call Code Enforcement at (303) 651-8695 or email code.enforcement@longmontcolorado.gov. Pattern data informs the city's annual STR license renewal review.