The Resolution Path
1. Local Ordinance
2. Document Evidence
3. Resolve Dispute
The Resolution Path
Step 1 of 3Boulder, CO
Noise Ordinance Overview
You’ve located the ordinance. Now, compare your situation against the legal thresholds to build your case.
Official Decibel Limits
volume_up"Sound from any non-vehicular source shall not exceed 55 dBA in residential, mixed-use, and industrial zones. Motor vehicle sound in the public right-of-way shall not exceed 80 dBA, except vehicles over 10,000 lbs may not exceed 88 dBA. Measurements are on the 'A' weighting scale."
AI Executive Summary
Boulder, CO noise ordinances, primarily Chapter 5-9 B.R.C. 1981, prohibit unreasonable noise through specific decibel limits and quiet hours. Residential areas generally have a 55 dBA limit. Amplified sound is restricted if audible over 100 feet at night (11 PM - 7 AM) or 200 feet during the day (7 AM - 11 PM) in residential zones, ensuring community peace and welfare.
Specific Noise Restrictions
Construction
Construction work for which a permit is issued is deemed industrial sound from 7:00 a.m. to 5:00 p.m. Light construction work in a residential zone is deemed commercial sound from 5:00 p.m. until 9:00 p.m. Power tools audible off property are prohibited in residential zones between 9:00 p.m. and 7:00 a.m. Amplified sound is not considered construction work activity.
Amplified Sound
Electronically amplified sound or noise is prohibited between 11:00 p.m. and 7:00 a.m. if audible 100 feet or more beyond the property line in a residential district, or 150 feet or more in commercial/industrial districts. Between 7:00 a.m. and 11:00 p.m. in residential districts, amplified sound is prohibited if audible 200 feet or more beyond the property line.
Animals
Nuisance complaints related to animals are handled by the Animal Protection Unit.
Vehicles
Sound from a motor vehicle in the public right-of-way shall not exceed 80 dBA; vehicles 10,000 lbs and above may exceed 80 dBA but not 88 dBA. Motor vehicles must have a properly maintained muffler and exhaust system without cut-offs or bypasses. Amplified sound from a motor vehicle is prohibited if audible 25 feet or more away, or if it emits felt vibrations. Snow removal equipment with standard muffling is exempt.
Lawn & Garden Equipment
Operation of lawn mowers, leaf blowers, or other power lawn/gardening tools is prohibited between 9:00 p.m. and 7:00 a.m. within, or within 100 feet of, any residential district.
Trash Pickup
Trash pickup with a truck that has a compactor or the capacity to raise and dump dumpsters is prohibited in residential or business zones between 11:00 p.m. and 7:00 a.m.
Noise Protection Score
How well does Boulder protect residents from noise?
55 dB day / 55 dB night
Extensive coverage
Standard fines
6 noise categories regulated
Related Guides for Boulder, CO
Based on Boulder, CO's specific noise restrictions
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Frequently Asked Questions
What are the quiet hours in Boulder, CO?
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Boulder's quiet hours: 11 PM - 7 AM (general), 9 PM - 7 AM (lawn care), 7 AM - 5 PM (construction). During these hours, noise must stay below residential nighttime decibel limits at the property line. Violations can result in fines on the first offense.
What are the noise decibel limits in Boulder?
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Boulder's residential noise limits: 55 dBA (7 AM - 11 PM) dB(A) during the day and 55 dBA (11 PM - 7 AM) dB(A) at night. Commercial zones allow Not specified (general non-vehicular, but amplified sound has distance limits). Limits are measured at the receiving property line.
How do I file a noise complaint in Boulder?
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Call the Boulder police non-emergency line at 303-441-3333. For ongoing violations, contact code enforcement at 303-441-1875. Have the address, noise type, and duration ready. You can request to remain anonymous.
What is the fine for a noise violation in Boulder?
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Boulder's noise violation penalties: Violations of Boulder Revised Code 1981 regarding noise can result in citations and may contribute to a property being designated as a 'chronic nuisance property'. Specific general fine amounts for noise violations are not explicitly detailed in the provided city ordinance snippets.. Fines typically escalate with repeat offenses and may result in misdemeanor charges for chronic violations.
What are the dog barking rules in Boulder?
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Boulder's rules: Nuisance complaints related to animals are handled by the Animal Protection Unit.. To report a barking dog, contact animal control at 303-441-3333 or the police non-emergency line.
When can construction work start in Boulder?
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Boulder's construction noise rules: Construction work for which a permit is issued is deemed industrial sound from 7:00 a.m. to 5:00 p.m. Light construction work in a residential zone is deemed commercial sound from 5:00 p.m. until 9:00 p.m. Power tools audible off property are prohibited in residential zones between 9:00 p.m. and 7:00 a.m. Amplified sound is not considered construction work activity.. Violations can be reported to code enforcement, which can issue stop-work orders for unpermitted or off-hours construction.
Are there rules about loud music in Boulder?
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Yes. Boulder's ordinance: Electronically amplified sound or noise is prohibited between 11:00 p.m. and 7:00 a.m. if audible 100 feet or more beyond the property line in a residential district, or 150 feet or more in commercial/industrial districts. Between 7:00 a.m. and 11:00 p.m. in residential districts, amplified sound is prohibited if audible 200 feet or more beyond the property line.. Music exceeding residential decibel limits or plainly audible across property lines during quiet hours is a citable violation.
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