Quiet hours in Arapahoe County, CO — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
Unincorporated Arapahoe County relies on Colorado Noise Abatement Statute CRS 25-12-103 for noise regulation. State law sets maximum permissible noise levels by zone and time of day, with stricter limits from 7 PM to 7 AM. The Arapahoe County Sheriff enforces noise complaints.
Arapahoe County does not have a standalone county noise ordinance for unincorporated areas. Colorado Revised Statutes 25-12-103 establishes maximum permissible noise levels based on zoning district and time of day. For residential zones, daytime limits (7 AM to 7 PM) are 55 dBA and nighttime limits (7 PM to 7 AM) are 50 dBA at the property boundary. CRS 18-9-106 additionally prohibits unreasonable noise that disturbs the peace. The Arapahoe County Sheriff's Office responds to noise complaints in unincorporated areas. HOA covenants may impose additional private restrictions.
CRS 25-12-103 violations are subject to civil penalties up to $500 per occurrence. CRS 18-9-106 disturbing the peace is a Class 1 petty offense with fines up to $300.
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See how Arapahoe County's quiet hours rules stack up against other locations.
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