Quiet hours in Castle Rock, CO — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
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.
The Town of Castle Rock regulates noise directly under Municipal Code Chapter 9.16 (Noise Control), section 9.16.030 Prohibited Acts. As a Colorado home-rule town, Castle Rock sets its own thresholds and does not defer to the county. The Town's published standard is that radios, televisions, musical instruments and similar devices may not be audible 100 feet away, nor audible through walls common to two parties. Construction hours of operation are 7 a.m. to 7 p.m., meaning quiet hours run 7 p.m. to 7 a.m. Colorado's state maximum-permissible-noise statute (CRS 25-12-103) backs this up, treating residential noise above 55 dB(A) daytime / 50 dB(A) nighttime measured 25 feet from the property line as prima facie public nuisance.
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.
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