Outdoor amplified music in Longmont is regulated through LMC § 10.20.100(A) (amplified-sound prohibition audible at 25 feet) combined with the LMC Chapter 13.37 'use of public places' permit, which allows up to 80 decibels at the permit perimeter for authorized special events.
LMC § 10.20.100(A) prohibits, at any time, amplified sound (as defined in § 13.37.020) that is audible 25 feet from the source or inside a private residence the responsible person has no right to occupy. The same statute creates a permit-based exception: 'amplified sound of 80 decibels or less as measured from the perimeter of the area covered by a use of public places permit for a special event issued pursuant to chapter 13.37 of this Code... shall not constitute an unreasonable noise.' LMC § 10.20.110(D)(5)(ii) further exempts noises 'resulting from authorized public activities such as parades, fireworks displays, sports activities and events, musical productions, and other activities to the extent they are approved and limited by the city.' Restaurants, breweries, and concert venues that wish to host outdoor performances generally must either keep amplified sound below the 25-foot audibility threshold or obtain a special-event permit under Chapter 13.37.
General municipal penalty: up to $999.00 and/or up to 180 days imprisonment per LMC general-penalty rules.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Longmont, CO
Longmont's updated LMC 15.05.040 (effective January 1, 2026) bans artificial turf as a 'non-functional turf' replacement in tree lawns, medians, parking-lot ...
Longmont, CO
Longmont has no bamboo-specific ordinance. Bamboo is not listed on the Colorado Noxious Weed list and does not appear in Longmont's Integrated Weed Managemen...
Longmont, CO
Per LMC § 15.04.050(D)(4), Longmont food trucks may operate only in non-residential zoning districts (ice cream vendors are allowed in residential zones), mu...
Longmont, CO
Operating a food truck or pushcart in Longmont requires an annual Mobile Retail Food Vending Permit from the Building Services Division, plus a Longmont busi...
Longmont, CO
Federal law (FAA Part 107 and 49 U.S.C. § 44809 for recreational flyers) governs U.S. airspace and Longmont cannot regulate altitude or flight paths. The Cit...
Longmont, CO
Under LMC 6.44.090 (cited by Longmont Code Enforcement), no garage sale in Longmont may run for more than 3 consecutive days, and no more than 12 total days ...
See how Longmont's outdoor music rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.