Noise from Specific Sources in Longmont, CO (2026)
2 verified noise from specific sources rules for Longmont, Colorado, sourced directly from the municipal code and official government pages.
Verified from official government sources
Car Alarm Limits
Longmont exempts car alarms from its noise ordinance. Section 10.20.100.D.5.i excuses warning or alarm devices that signal an unsafe situation or call for police from the 50 to 75 dB(A) limits and the 10 p.m. to 7 a.m. quiet hours that apply to every other fixed noise source in the city. Separately, Chapter 6.98's private alarm system rules, including registration and false-alarm fees, expressly exclude alarm devices affixed to motor vehicles.
Longmont Car Alarm Noise Exemption
Few RestrictionsLongmont Municipal Code § 10.20.100.D.5.i; § 6.98.020
5. Exemptions. The following operations and activities are exempted from the limitations of this section: i. Warning or alarm devices that have the purpose of signaling unsafe or dangerous situations or calling for police. [...] Alarm system means any assembly of equipment, mechanical or electrical, designed to detect an unauthorized intrusion onto protected premises or the existence of an emer...
Delivery Truck Noise
Longmont Municipal Code § 10.20.100(D)(2) bars truck or rail loading and unloading within 250 feet of a residential lot between 10 p.m. and 7 a.m., with a carve-out letting retail grocery stores load overnight; a separate rule bans refuse-truck loading between 7 p.m. and 7 a.m. within 500 feet of a residential zone.
Longmont Truck Loading Noise Hours
Some RestrictionsLongmont Municipal Code § 10.20.100(D)(2)
D.Additional noise standards and exemptions for specific operations and activities.1.Refuse collection/loading. No person shall engage in waste disposal services or refuse loading and collection or operate any compacting equipment or similar mechanical device in any manner so as to create any noise exceeding the standards stated above when measured at a distance of 50 feet from the equipment wh...
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