Seattle Area Noise Ordinance Guide (2026)

The Seattle metropolitan area has detailed noise ordinances that reflect the region's mix of dense urban neighborhoods, tech campuses, and residential suburbs. Seattle itself has one of the more progressive noise codes in the Pacific Northwest, while surrounding cities like Bellevue, Kent, and Renton each set their own standards. Understanding the rules for your specific location helps you handle noise issues effectively.

Seattle Noise Ordinance

Seattle's noise ordinance (SMC 25.08) sets decibel limits based on the zoning of both the noise source and the receiving property. For residential-to-residential noise, the daytime limit (7 AM to 10 PM) is 55 dB, and the nighttime limit (10 PM to 7 AM) is 45 dB. These are some of the lower nighttime limits among major U.S. cities. The code also has specific provisions for amplified music, motor vehicles, construction equipment, and mechanical systems like HVAC units. Enforcement is handled by the Seattle Department of Construction and Inspections (SDCI).

Quiet Hours and Enforcement

Seattle's quiet hours run from 10 PM to 7 AM on weekdays and 10 PM to 9 AM on weekends and holidays. During quiet hours, the lower decibel limits apply, and enforcement officers can issue citations for violations. The city takes a graduated enforcement approach, starting with a warning and escalating to fines for repeat violations. Fines for noise violations in Seattle can reach $500 per occurrence. The city also has a provision for chronic noise sources that allows the SDCI to require permanent mitigation measures.

Bellevue, Kent, and Renton

Bellevue's noise ordinance sets residential nighttime limits at 50 dB and daytime limits at 60 dB, slightly higher than Seattle's limits. Kent follows a similar structure with enforcement through its code enforcement division. Renton sets nighttime limits at 45 dB for residential zones, matching Seattle's standards. All three cities restrict construction to weekdays from 7 AM to 6 PM and Saturdays from 9 AM to 6 PM, with no construction on Sundays or holidays.

Construction Noise

Construction noise in Seattle is restricted to weekdays from 7 AM to 7 PM and Saturdays from 9 AM to 7 PM. No construction is permitted on Sundays or holidays. Weekend construction requires compliance with additional noise limits. For major projects, Seattle requires a noise mitigation plan that includes measures to reduce impact on nearby residents. The SDCI reviews these plans as part of the permitting process. Bellevue and Kirkland have similar construction hour restrictions.

How to File a Complaint

In Seattle, noise complaints can be filed online through the SDCI website or by calling the department directly during business hours. After hours, the Seattle Police Department handles urgent noise complaints through its non-emergency line. Bellevue routes complaints through its Development Services department. For the fastest resolution, document the noise with dates, times, and descriptions, and file a written complaint. Repeated complaints from multiple neighbors carry more weight in the enforcement process.