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Hillsboro, OR
Noise Ordinance Overview

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Official Decibel Limits

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Residential Day
60dB
Residential Night
50dB

"Limits vary based on the zone of the noise producer and receiver, measured at the property line closest to the sound source using an A-weighted scale. Industrial to Industrial is 70 dBA day and night."

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AI Executive Summary

Gemini AI

Hillsboro, OR, Municipal Code 6.24 prohibits unauthorized, disturbing, or unnecessary noise, with specific decibel limits varying by zoning district and time of day. Quiet hours are from 9 PM to 6 AM daily, during which lower sound levels apply. Violations are subject to a $500 penalty per day, with additional remedies for ongoing nuisances.

Specific Noise Restrictions

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Construction

Prohibited between 9 p.m. and 6 a.m. in or adjacent to residential/business districts, unless for urgent public safety with a permit. Industrial, agricultural, or construction activities (other than demolition) are generally exempt between 6 a.m. and 9 p.m. Domestic tools like lawnmowers are allowed 6 a.m. to 9 p.m. Mon-Fri, and 8 a.m. to 6 p.m. Sat-Sun.

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Amplified Sound

Unlawful if noise levels exceed HMC 6.24.030 limits. For outdoor facilities, sound levels at the perimeter must not exceed maximum limits. If authorized by the city manager to exceed limits, amplified sound is restricted to 50 minutes of each hour, four hours of any eight-hour block on weekends, and three hours between 4 p.m. and 9 p.m. on weekdays. Community groups may receive exceptions.

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Animals

Under Washington County Animal Code 6.04.260(3), it is a Class C Civil Infraction for a dog owner to allow a dog to cause continuous annoyance for a total of five or more minutes out of any fifteen-minute period.

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Vehicles

Prohibits sounding a horn except as a danger signal, using exhaust brakes except in emergencies, and operating a motor vehicle that creates loud or unnecessary sounds (grating, grinding, rattling). Working on a car in the street is also prohibited.

Noise Protection Score

BGood

How well does Hillsboro protect residents from noise?

Decibel Limits20/25

60 dB day / 50 dB night

Quiet Hours15/25

Standard coverage

Penalties13/25

Standard fines

Coverage25/25

4 noise categories regulated

compare_arrowsCompare Another CityScore: 73/100 — Based on dB limits, quiet hours, penalties, and ordinance breadth

Frequently Asked Questions

What are the quiet hours in Hillsboro, OR?

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Hillsboro's quiet hours: 9 PM to 6 AM daily. During these hours, noise must stay below residential nighttime decibel limits at the property line. Violations can result in fines on the first offense.

What are the noise decibel limits in Hillsboro?

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Hillsboro's residential noise limits: 60 dBA (All Other to All Other) dB(A) during the day and 50 dBA (All Other to All Other) dB(A) at night. Commercial zones allow 60 dBA (All Other to All Other) or 60 dBA (Industrial to All Other). Limits are measured at the receiving property line.

How do I file a noise complaint in Hillsboro?

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Call the Hillsboro police non-emergency line at 503-629-0111. For ongoing violations, contact code enforcement at 503-629-0111. Have the address, noise type, and duration ready. You can request to remain anonymous.

What is the fine for a noise violation in Hillsboro?

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Hillsboro's noise violation penalties: Violation of any provision of the Hillsboro Municipal Code, including noise ordinances, is subject to a penalty of $500, unless a different penalty is specifically provided. Each day a violation continues constitutes a separate offense. Conditions causing violations may also be deemed a public nuisance and summarily abated by the city.. Fines typically escalate with repeat offenses and may result in misdemeanor charges for chronic violations.

What are the dog barking rules in Hillsboro?

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Hillsboro's rules: Under Washington County Animal Code 6.04.260(3), it is a Class C Civil Infraction for a dog owner to allow a dog to cause continuous annoyance for a total of five or more minutes out of any fifteen-minute period.. To report a barking dog, contact animal control at Refer to Washington County Animal Services, initiate via Hillsboro Police non-emergency (503-629-0111) for barking dogs. or the police non-emergency line.

When can construction work start in Hillsboro?

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Hillsboro's construction noise rules: Prohibited between 9 p.m. and 6 a.m. in or adjacent to residential/business districts, unless for urgent public safety with a permit. Industrial, agricultural, or construction activities (other than demolition) are generally exempt between 6 a.m. and 9 p.m. Domestic tools like lawnmowers are allowed 6 a.m. to 9 p.m. Mon-Fri, and 8 a.m. to 6 p.m. Sat-Sun.. Violations can be reported to code enforcement, which can issue stop-work orders for unpermitted or off-hours construction.

Are there rules about loud music in Hillsboro?

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Yes. Hillsboro's ordinance: Unlawful if noise levels exceed HMC 6.24.030 limits. For outdoor facilities, sound levels at the perimeter must not exceed maximum limits. If authorized by the city manager to exceed limits, amplified sound is restricted to 50 minutes of each hour, four hours of any eight-hour block on weekends, and three hours between 4 p.m. and 9 p.m. on weekdays. Community groups may receive exceptions.. Music exceeding residential decibel limits or plainly audible across property lines during quiet hours is a citable violation.

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