How Castle Rock Handles Noise Ordinances: A Practical Guide

Castle Rock maintains 100 local ordinances across all categories, and 10 of those deal specifically with noise ordinances. Here is a breakdown of what the city actually requires, what is prohibited, and where Castle Rock falls on the strict-to-permissive spectrum compared to other cities.

Quiet Hours

Castle Rock's noise code (Chapter 9.16) makes it unlawful to create a noise disturbance. Radios, TVs and instruments may not be audible 100 feet away, nor through a shared party wall. Quiet hours run 7 p.m. to 7 a.m.

Key details: Governing code: Municipal Code Ch. 9.16. Quiet hours: 7 p.m. to 7 a.m.. Audibility rule: Not audible 100 feet away. State backstop: CRS 25-12-103 (55/50 dB(A)). Report to: Police non-emergency 303-663-6100.

Noise-disturbance violations are handled by Castle Rock Police / Code Compliance; report to non-emergency 303-663-6100. Municipal-code violations carry fines and, on conviction, penalties under the general penalty provisions.

Construction Hours

Construction, drilling and demolition noise is prohibited between 7 p.m. and 7 a.m. on weekdays, and between 6 p.m. and 8 a.m. on weekends and holidays, under Municipal Code section 9.16.030(5).

Key details: Code section: MC 9.16.030(5). Weekday allowed: 7 a.m. to 7 p.m.. Weekend/holiday allowed: 8 a.m. to 6 p.m.. Exceptions: Emergency work; variance; MC 9.16.050. Report to: Code Compliance / 303-663-6100.

Violations are enforced by Code Compliance and Police; report through Report a Concern or non-emergency 303-663-6100. Municipal-code convictions carry fines under the Town's general penalty provisions.

Amplified Music & Events

Amplified sound is governed by noise-control Chapter 9.16. The Town's standard: radios, TVs, musical instruments and similar devices may not be audible 100 feet away, nor audible through a shared party wall.

Key details: Governing code: MC 9.16.030. Audibility limit: Not audible 100 feet away. Party-wall rule: Not audible through shared wall. Night dB backstop: 50 dB(A) (CRS 25-12-103). Report to: 303-663-6100 / Report a Concern.

Reported to Police non-emergency 303-663-6100 or Report a Concern (select Excessive noise). Municipal-code violations carry fines on conviction.

Outdoor Music

Outdoor speakers, live music and backyard parties fall under noise-control Chapter 9.16: sound may not be audible 100 feet away, and quiet hours run 7 p.m. to 7 a.m. Larger events may need Town coordination.

Key details: Governing code: MC Ch. 9.16 Noise Control. Audibility limit: Not audible 100 feet away. Quiet hours: 7 p.m. to 7 a.m.. Night dB backstop: 50 dB(A) (CRS 25-12-103). Block parties: Coordinate with the Town.

Reported to Police non-emergency 303-663-6100 or via Report a Concern. Repeat outdoor-music disturbances can result in fines under the municipal code.

Barking Dogs

Under Municipal Code 6.02.110 it is unlawful to keep a dog that barks, howls, whines or yelps audibly beyond the premises for more than 10 consecutive minutes, day or night.

Key details: Code section: MC 6.02.110 (Noisy Dogs). Time threshold: Over 10 consecutive minutes. Standard: Audible beyond the premises. Applies: Day or night. Report to: Animal Control 303-663-6100.

Enforced by the Castle Rock Police Animal Welfare Unit. Documented violations can result in a municipal summons and fine; call 303-663-6100 to report.

Vehicle Noise

Castle Rock enforces vehicle noise through the adopted Colorado Model Traffic Code plus CRS 42-4-225: every vehicle must have an adequate muffler in constant operation to prevent excessive or unusual noise. Loud exhaust and revving are cited.

Key details: Adopted code: Colorado Model Traffic Code (Title 10). State muffler law: CRS 42-4-225. Standard: Prevent excessive or unusual noise. Cutouts/bypass: Prohibited. Enforced by: Castle Rock Police.

Muffler and exhaust-noise violations are traffic citations under the Model Traffic Code / CRS 42-4-225, carrying fines and points. Report through Police non-emergency 303-663-6100.

Industrial Noise

Industrial and commercial noise is governed by Chapter 9.16 plus zoning. Colorado's CRS 25-12-103 caps commercial noise at 60/55 dB(A) and industrial at 80/75 dB(A) (day/night), measured 25 feet from the property line.

Key details: Commercial limit: 60/55 dB(A) day/night. Light industrial: 70/65 dB(A) day/night. Industrial: 80/75 dB(A) day/night. Measured at: 25 feet from property line. Authority: CRS 25-12-103 + MC Ch. 9.16.

Nuisance noise from a business can trigger Code Compliance action and municipal fines; persistent violations may affect zoning/permit compliance. Report to 303-663-6100.

Leaf Blower Rules

Castle Rock has no dedicated leaf-blower ban. Blowers and yard equipment fall under the general noise code (Ch. 9.16): they must not create a noise disturbance and must observe quiet hours 7 p.m. to 7 a.m.

Key details: Dedicated blower ban: None in Castle Rock. Governing rule: General noise code Ch. 9.16. Quiet hours: 7 p.m. to 7 a.m.. Daytime yard work: Permitted (limited-hours exemption). State backstop: CRS 25-12-103.

Handled as a general noise-disturbance complaint by Code Compliance / Police; report to 303-663-6100. Fines apply on a municipal-code conviction.

Decibel Limits

Castle Rock's code uses an audibility standard, but Colorado's CRS 25-12-103 supplies the dB backstop: residential noise measured 25 feet from the property line is capped at 55 dB(A) (7 a.m.-7 p.m.) and 50 dB(A) (7 p.m.-7 a.m.).

Key details: Residential day limit: 55 dB(A) (7 a.m.-7 p.m.). Residential night limit: 50 dB(A) (7 p.m.-7 a.m.). Measured at: 25 feet from property line. Short-burst allowance: +10 dB(A), 15 min/hour. State authority: CRS 25-12-103.

Exceeding the CRS 25-12-103 thresholds is prima facie public nuisance, enforceable by the Town. Report to Police / Code Compliance at 303-663-6100.

Aircraft Noise

Castle Rock and Colorado do not regulate aircraft noise in flight. Aircraft operations and noise are governed by the FAA under federal law; the Town's noise code does not apply to lawful overflights.

Key details: Town rule: None (federally preempted). Governing authority: FAA (federal law). Local code scope: Ground-based noise only (Ch. 9.16). State statute: CRS 25-12-103 excludes aircraft. Drones: FAA Part 107 + Town park rules.

No Town enforcement of in-flight aircraft noise. Complaints go to the FAA or the relevant airport's noise office; drones may be cited under FAA rules.

The Bottom Line

Castle Rock's noise ordinances rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Castle Rock is broadly strict or permissive.

These rules come from Castle Rock's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.