Noise Ordinances in Colorado (2026)

Colorado's Noise Abatement Act does not exempt construction. Under C.R.S. 25-12-103, construction noise is measured…

Arvada bars construction equipment noise in residential, commercial, and mixed-use zoning districts between 9:00 p.m…

Aurora ties construction noise limits to time of day: loosest 7am-5pm, tighter 5pm-9pm, and residential-level limits…

Boulder bars audible construction power tools in a residential zone between 9 p.m. and 7 a.m. under Boulder Revised…

Construction noise in residential areas of unincorporated Boulder County is capped at 80 dB(A) from 7 a.m. to 7 p.m…

Construction, drilling and demolition noise is prohibited between 7 p.m. and 7 a.m. on weekdays, and between 6 p.m. and…

Centennial bans construction activity within 300 feet of residences between 7 p.m. and 7 a.m., though the Director may…

Colorado Springs City Code section 9.8.107 subjects construction projects to the maximum permissible noise levels…

Denver bars construction equipment and activities that are plainly audible on nearby homes outside set hours: 7 a.m.-9…

Douglas County doesn't set a construction start-and-stop clock; it regulates construction noise by decibel level…

Construction, drilling, earthmoving, excavating and demolition equipment is exempt from Fort Collins' general noise…

In Fountain, Colorado, construction work is confined to set hours: 7 a.m. to 7 p.m. weekdays, 8 a.m. to 5 p.m…

Greeley's noise code exempts only the city's own emergency construction and street repair from noise limits: private…

Jefferson County doesn't set a construction curfew by clock time; instead it caps construction-site noise in…

Lakewood bars Construction citywide on Sundays, on six Designated Holidays, and between 9:00 p.m. and 7:00 a.m. daily…

Construction tools are exempt only 7:00 a.m.–8:00 p.m. in Fort Collins (all equipment muffled). Unincorporated Larimer…

Littleton limits noise-generating construction equipment to 7 AM to 7 PM on weekdays and 9 AM to 5 PM on weekends and…

Longmont bans construction activity noise in residential areas or within 500 feet of a school between 7 p.m. and 7 a.m…

Loveland does not set a fixed construction clock-hours rule; instead, § 7.32.060.F of the Loveland Municipal Code holds…

Manitou Springs caps construction-project noise at 75 dB(A) and restricts it to the hours of 7:00 a.m. to 7:00 p.m…

Pueblo holds construction projects to industrial-zone decibel limits, 80 db(A) daytime, 75 db(A) at night, for as long…

Thornton bans construction activity noise citywide between 9:00 p.m. and 6:00 a.m., except in industrial districts or…

Weld County's noise ordinance sets no construction hours. It exempts noise produced at a construction site and allows…

Unincorporated Adams County makes it a petty offense for a dog to bark, howl, yelp, or whine loud enough to be heard…

In unincorporated Arapahoe County, a dog that barks, howls, yelps or whines audibly beyond its own property for more…

Arvada treats a dog that habitually barks, howls, or yelps as a "nuisance animal" under City Code Section 14-53. A…

Aurora bans keeping a dog whose habitual barking annoys neighbors, but a case only proceeds with two signed complaints…

Boulder Revised Code § 6-1-19 bars any animal guardian from letting a pet disturb the peace with loud, persistent or…

Boulder County's decibel-based noise ordinance, No. 92-28, caps residential sound at 55 dB(A) by day and 50 dB(A) at…

Under Municipal Code 6.02.110 it is unlawful to keep a dog that barks, howls, whines or yelps audibly beyond the…

Centennial caps barking at ten minutes by day and five minutes at night before it becomes a code violation. Sec…

Colorado Springs City Code section 6.7.115 makes it unlawful to own or keep any pet or hoofed animal whose unreasonably…

Denver bans letting a dog disturb a person or neighborhood with loud, persistent barking, howling, or yelping, and dogs…

Animals are specifically excluded from Douglas County's Section 17A noise limits, so barking is not measured in…

Fort Collins bans letting an animal make unreasonable noise or disturb the peace by barking, whining, howling or…

Fountain bans keeping a pet or hoofed animal whose "unreasonably loud and persistent barking, howling, baying, braying…

Greeley limits how long a pet can bark, howl, or make loud noise audible off the property: no more than ten minutes by…

Jefferson County's Noise Abatement Policy exempts 'the sound made by animals' from its decibel limits, so a barking dog…

Lakewood bars keeping any animal or bird whose frequent or habitual howling, barking, meowing or squawking unreasonably…

Littleton makes it unlawful to keep a cat or dog that, through loud, frequent or habitual barking, yelping, yowling or…

Longmont declares an animal a public nuisance if its owner or keeper permits it to habitually bark, howl or make other…

In Loveland, Colorado it is unlawful for a dog's owner or keeper to let it disturb the peace and quiet of another…

Section 7.02.090 makes it unlawful to keep a pet or hoofed animal whose unreasonably loud and persistent barking…

Pueblo Municipal Code § 11-4-31(b) presumes a nuisance when a dog barks, whines, or howls continuously for more than 10…

Thornton makes it a noise violation for any animal or bird to create a plainly audible sound through frequent or…

Weld County's noise ordinance does not cover barking. Sec. 14-9-60(E) exempts sounds made by dogs and farm animals…

Westminster makes it a civil infraction for an owner to let an animal disturb neighbors with unreasonably loud…

Boulder bans lawn mowers, leaf blowers, and other power lawn or garden tools between 9 p.m. and 7 a.m. on private…

Unincorporated Boulder County exempts leaf blowers, lawnmowers, snowblowers, and other hand or power tools of 5…

Douglas County has no leaf-blower ban. Instead, Section 17A excludes routine property maintenance from the noise…

Fort Collins's noise ordinance exempts domestic power tools and lawn and garden equipment, including leaf blowers, from…

Jefferson County has no leaf-blower-specific rule. A leaf blower is treated as any non-vehicular residential noise…

Lakewood bans running leaf blowers, lawn mowers, chain saws and other Repair or Maintenance Power Equipment on Sundays…

Fort Collins exempts leaf blowers and other lawn/garden power tools only when used 7:00 a.m.–8:00 p.m. and generating…

Littleton restricts domestic power equipment, the category covering leaf blowers, lawnmowers and other grounds…

Homeowners' engine- or motor-powered lawn tools, including leaf blowers, power mowers, edgers and riding tractors…

Weld County does not restrict leaf blowers. Sec. 14-9-60(J) exempts the sound made by a lawnmower, snow blower or other…

Colorado treats unreasonably loud amplified music as a public nuisance enforceable statewide under the Noise Abatement…

Colorado Springs City Code section 9.8.102 makes it unlawful to operate a motor vehicle sound amplification system that…

Adams County treats any amplified sound in its parks, trails, and open-space areas as an automatic "general nuisance"…

Arvada requires a permit before anyone uses a loudspeaker or sound-amplifying equipment, fixed, movable, or mounted on…

Greeley requires a police-chief permit to install or operate loudspeakers or sound-amplifying equipment, and limits…

Littleton bans operating a loudspeaker or sound-amplifying equipment audible in any residential area unless a temporary…

Loveland bars anyone from running a loudspeaker, PA system, radio, or other sound-amplifying equipment in or on a motor…

Thornton bars any loudspeaker, PA system, or device that transmits music, instructions, or announcements if the…

Aurora caps amplified sound and loudspeakers at 55 dBA (day) / 45 dBA (night) at residential property lines, and bars…

Boulder limits how far amplified sound may carry from the property where it originates. Under Boulder Revised Code §…

Boulder County treats amplified music from a parked or non-moving vehicle as noise from a fixed source, measured 10…

Outdoor speakers, live music and backyard parties fall under noise-control Chapter 9.16: sound may not be audible 100…

Centennial requires live music or amplified sound at a Permanent Commercial Outdoor Patio to stop by 10 p.m. whenever…

Denver caps amplified sound crossing into a home at 55 dB(A) from 7 a.m. to 10 p.m. and 50 dB(A) overnight, measured at…

Douglas County caps electronic amplifier noise at 55 dB(A) in its Business, Commercial, Light Industrial and General…

Fort Collins Municipal Code Section 17-129 bans making or knowingly permitting unreasonable noise, and directs Police…

Speakers, PA systems, and other amplified sound equipment fall under Jefferson County's general ban on any "machine or…

Lakewood bans plainly-audible amplified sound at the property line between 10:00 p.m. and 7:00 a.m., and even during…

Outdoor music and events fall under the same § 20-23 dB(A) limits (55 day / 50 night in residential zones). Fort…

Longmont treats amplified sound audible 25 feet from its source, or inside a private residence, as unreasonable noise…

Manitou Springs caps amplified sound, including car stereos and sound amplification systems, that can be heard without…

Outdoor amplified music at Mesa County agritourism operations, farm events, weddings and similar activities, can't…

Pueblo bans running a radio, amplifier or loudspeaker within 300 feet of a home if it's audible 25 feet from the curb…

Westminster's Chapter 4 sound truck ordinance sets hard limits on vehicle-mounted amplified sound equipment: operation…

Fountain, Colorado bars anyone from running sound amplification equipment in a city park without the parks director's…

Unincorporated Arapahoe County bans new residential and other noise-sensitive development inside the 65-Ldn and 60-Ldn…

Boulder controls aircraft noise and hazards through an Airport Influence Overlay Zone rather than a decibel ordinance…

Federal law preempts Douglas County from regulating aircraft noise, so Centennial Airport traffic is expressly excluded…

El Paso County requires 30 dBA of indoor noise reduction for new residential construction inside the Airport Noise…

Mesa County regulates aircraft noise around Grand Junction Regional Airport through an Airport Environs Overlay…

New and remodeled buildings in Aurora, Colorado's designated airport noise districts must meet minimum sound-insulation…

Boulder County's noise ordinance does not regulate aircraft. Section 1.01.060(G) exempts "operation of aircraft or…

Neither Jefferson County nor Colorado's noise statute regulates aircraft noise. CRS 25-12-103(4) states the article…

Aircraft operation is exempt from Fort Collins noise limits under § 20-25(3) because it is governed by federal law…

Aircraft operators at Pueblo Memorial Airport must comply with all noise abatement procedures and policies set by the…

Weld County's noise ordinance does not regulate aircraft. Sec. 14-9-60(C) exempts noise from operating aircraft and…

Denver's noise ordinance exempts helicopters landing or taking off at a city-licensed helipad from the citywide Table A…

Pilots using Longmont's Vance Brand Municipal Airport are directed to fly recommended traffic pattern altitudes…

Aircraft in-flight and takeoff noise is federally preempted, so Colorado Springs does not set decibel limits on…

Fort Collins's local noise ordinance does not reach aircraft. Section 20-25(3) exempts 'the operation of aircraft or…

Loveland's noise chapter does not reach aircraft: § 7.32.060.B of the Loveland Municipal Code excludes 'all sound…

Colorado fixes industrial noise ceilings at 80 decibels daytime and 75 decibels nighttime statewide under the Noise…

Businesses in Greeley's commercial or industrial zones must obtain a police-issued permit before using any loudspeaker…

Oil and gas facilities approved by Use by Special Review in unincorporated Arapahoe County cannot emit more than 60 dBA…

Arvada caps stationary noise sources at fixed decibel levels tied to zoning district and time of day under Table I of…

Aurora caps commercial and industrial sound by zone, from 55 dBA near homes up to 80 dBA in heavy industrial (I-2)…

Boulder Revised Code § 5-9-3 sets fixed decibel ceilings by the zoning district where sound lands: 55 dBA by day and 50…

Boulder County caps vehicle noise on unincorporated roads at 80 dB(A) (84 dB(A) above 35 mph) for most vehicles, with…

Castle Rock's code uses an audibility standard, but Colorado's CRS 25-12-103 supplies the dB backstop: residential…

Centennial outlaws any 'excessive or unusually loud noise', from businesses, industrial equipment or any other source…

Denver limits noise crossing property lines from an industrial premises to 80 dB(A) daytime and 75 dB(A) nighttime at…

Douglas County caps outdoor noise at 55 dB(A) by day and 50 dB(A) at night across its A-1, LRR, RR, ER, SR, MF and MH…

Unincorporated El Paso County caps outdoor sound under LDC Table 6-7: 55 dBA daytime and 50 dBA at night in residential…

Fort Collins Municipal Code Section 20-23 sets maximum sound levels by zoning district and time of day, from 50 dB(A)…

Fountain caps steady industrial and commercial noise at 60 decibels measured at the property line, with a five-decibel…

Colorado's Noise Abatement Act sets hard decibel ceilings by zone in unincorporated Jefferson County: 55 dB(A) daytime…

In Fort Collins Industrial (I) zones the limit is 80 dB(A) (7 a.m.–8 p.m.) and 75 dB(A) (8 p.m.–7 a.m.), measured at…

Longmont caps sound measured 25 feet from the source at 50-55 dB(A) in residential zones, 55-65 dB(A) commercial, and…

Loveland caps noise by zone and time of day under Loveland Municipal Code § 7.32.040: residential areas max out at 55…

Manitou Springs caps ambient sound at 55 dB(A) daytime and 50 dB(A) at night in residential zones, and 60 dB(A) daytime…

Pueblo caps outdoor sound at the property line by zone and time of day, from 50 db(A) at night in residential areas up…

Thornton caps continuous sound at 55 dB(A) by day and 50 dB(A) by night in residential districts, 60/55 dB(A) in other…

Weld County caps ambient sound at 55 dB(A) in residential and commercial areas and 80 dB(A) in industrial areas and…

Denver bans excessive vehicle exhaust noise, requires working mufflers, prohibits Jake Brakes citywide, and caps car…

Arvada bars running a heavy vehicle over 10,000 pounds gross weight, or its auxiliary equipment, for more than ten…

Aurora, Colorado caps noise-producing devices -- including car stereos -- at the decibel limits in UDO Table 4.11-1…

Boulder caps the noise a motor vehicle makes in the public right-of-way at 80 dBA (88 dBA for trucks rated 10,000…

Every vehicle operated in unincorporated Boulder County must run a muffler in constant operation and properly…

Castle Rock enforces vehicle noise through the adopted Colorado Model Traffic Code plus CRS 42-4-225: every vehicle…

Colorado Springs City Code section 9.8.201 declares noise from vehicles under 10,000 lbs in excess of 80 dB(A), and…

Douglas County's Section 17A excludes motor vehicles, motorcycles, off-highway vehicles and snowmobiles from its noise…

Fort Collins bans unreasonable vehicle noise under Traffic Code Section 1418, covering loud stereos, revving engines…

Fountain's Section 9.52.030 requires every motor vehicle to run a muffler in good working order at all times to prevent…

Greeley requires every registered motor vehicle to run a maintained, unmodified muffler at all times, banning cut-off…

Every vehicle operated in unincorporated Jefferson County must run a constantly operating, properly maintained muffler…

Lakewood requires every motor vehicle, motorboat or stationary engine to run on an adequate muffler in constant…

Both Fort Collins (§ 20-28) and unincorporated Larimer County cap vehicle noise identically: heavy vehicles (10,000+ lb…

Littleton bars unmuffled vehicle exhaust and car stereos loud enough to carry. City Code Section 7-3-5 requires every…

Longmont deems motor vehicle noise from a licensed, non-commercial vehicle audible 300 feet away, from its engine…

Loveland Municipal Code § 9.28.015 bars running a car stereo, PA system, or other vehicle-mounted sound equipment loud…

Manitou Springs bans excessive vehicle noise under Municipal Code Section 6.08.020(C), covering sound amplification…

Pueblo caps motor vehicle sound at 80-88 db(A) by vehicle class, measured 25 feet away, and requires every vehicle to…

Thornton requires every vehicle to run a working muffler, with no cutoff, bypass, or similar modification, and caps…

Weld County caps vehicle noise on public roads at 80 dB(A) for cars and light trucks in 35-mph zones (84 dB(A) faster)…