Adams County uses Colorado's statewide decibel limits (CRS 25-12-103), measured 25 feet beyond the property line: Residential 55/50, Commercial 60/55, Light industrial 70/65, Industrial 80/75 dB(A) (day/night).
The Colorado Noise Abatement Act sets zone-based maximum permissible noise levels that the unincorporated county enforces. The day period is 7am to next 7pm; the night period is 7pm to next 7am. A daytime source may exceed its zone limit by up to 10 dB(A) for a single 15-minute period in any hour. Periodic, impulsive, or shrill noise is measured against limits 5 dB(A) below the listed values. Exceeding a limit at the 25-foot measuring point is prima facie evidence of a public nuisance.
Readings above the zone cap are prima facie evidence of a public nuisance under CRS 25-12-103, abatable through the Sheriff/code enforcement.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Thornton, CO
Thornton prohibits storing abandoned, inoperable, or unregistered vehicles on public streets or visible on private property. Vehicles may be tagged and towed...
Thornton, CO
Thornton regulates electric vehicle charging infrastructure for residential and commercial properties. Building codes may require EV-ready parking in new con...
Thornton, CO
Thornton regulates overnight parking on public streets. Many areas restrict parking between certain hours or require permits for overnight street parking.
Thornton, CO
Thornton requires pool barriers meeting safety codes to prevent drowning. Fences must be at least 4 to 5 feet tall with self-closing, self-latching gates.
Thornton, CO
Thornton requires permits for retaining walls above a certain height, typically 4 feet. Engineering review may be required for taller walls.
Thornton, CO
Thornton restricts or prohibits intentional feeding of wildlife including deer, coyotes, and bears. Feeding wildlife creates public safety hazards and nuisan...
See how Thornton's decibel limits rules stack up against other locations.
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