Broomfield, CO Noise Ordinances: Quiet Hours (2026)
Quiet hours in Broomfield, CO, also called the noise ordinance, nighttime noise rules, or residential quiet time, define the hours during which excessive noise is prohibited.
Key Facts
- Residential night limit
- 40 dB(A), 10 p.m. to 7 a.m.
- Residential day limit
- 55 dB(A), 7 a.m. to 10 p.m.
- Business night limit
- 60 dB(A)
- Business day limit
- 65 dB(A)
- Measurement distance
- At least 25 feet from source
- Max fine
- $2,650.00 per offense
Summary
Broomfield sets a strict nighttime noise curfew under Schedule 9-36A: residential zones drop from 55 dB(A) daytime to 40 dB(A) between 10:00 p.m. and 7:00 a.m., measured at least 25 feet from the source. Business zones face a smaller nighttime cut, from 65 dB(A) to 60 dB(A).
It shall be unlawful for any person to make, or cause to be made, any continuous, impulsive, or periodic noise within the city which:(A)Is of such unusual or exceptional character, intensity, or duration that it disturbs, injures, or endangers the comfort, repose, health, peace, or safety of any person or causes damage to any property; or(B)Exceeds the levels shown on schedule 9-36A below ... SCHEDULE 9-36A NOISE LIMITS District Time Period Maximum Permissible Levels E-1, E-2, R-1, R-3, R-5, PUD, R-PUD 7:00 a.m. until 10:00 p.m. of the same day 55 dB(A) 10:00 p.m. until 7:00 a.m. of the following day 40 dB(A)
Full Breakdown
Municipal Code § 9-36-020 makes it unlawful to make continuous, impulsive, or periodic noise that either disturbs a person's comfort, repose, health, peace, or safety, or exceeds the numeric caps on Schedule 9-36A. The schedule ties the limit to zoning district and time of day: E-1, E-2, R-1, R-3, R-5, PUD, and R-PUD residential districts are capped at 55 dB(A) from 7:00 a.m. to 10:00 p.m. and 40 dB(A) overnight until 7:00 a.m.; A-1, B-1, B-2 and related business/PUD districts run 65 dB(A) by day and 60 dB(A) overnight.
In I-1 and I-1 PUD districts the standard is measured at the lot line rather than a fixed decibel figure, and in I-2 and GA districts it is measured at the district boundary. Section 9-36-030 carves out specific daytime exceptions from the schedule, not from the general nuisance clause: domestic power equipment (lawn mowers, chain saws, snow blowers) may run 7:00 a.m. to 10:00 p.m. up to 80 dB(A); minor remodeling and repair work may run the same daytime hours up to 88 dB(A); and residential construction within 500 feet of occupied homes is limited to 7:00 a.m. to 7:00 p.m.
Monday through Friday and 9:00 a.m. to 6:00 p.m. weekends and holidays. Section 9-36-090 allows a person subject to the chapter to request a variance from the city manager's office, decided by city council or a hearing officer it appoints, on safety, technology, or equivalent-protection grounds, with the burden of proof on the applicant.
Violations & Fines
Noise violations are enforced under Broomfield's general penalty ordinance, § 1-12-020: a fine of up to $2,650.00, imprisonment of up to 364 days, or both, with each day a violation continues charged as a separate offense. Minors are not subject to jail time except for traffic offenses or as the Colorado Children's Code allows.
Frequently Asked Questions
What are Broomfield's quiet hours?
Are lawn mowers or construction exempt from quiet hours?
Can I get a variance from the noise limits?
Sources & Official References
Other rules in Broomfield
How Broomfield compares: Cities with the Strictest Noise Ordinances·Compare Broomfield to another location·View the Colorado noise ordinances overview
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