Noise Ordinances in Hillsboro, OR (2026)
8 verified noise ordinances for Hillsboro, Oregon, sourced directly from the municipal code and official government pages.
Verified from official government sources
Quiet Hours
Hillsboro bans erecting, excavating, demolishing, altering or repairing a building next to a residential or business district between 9:00 p.m. and 6:00 a.m. the next day, under Hillsboro Municipal Code § 6.24.040(E). The only way around the curfew is a City Manager permit for urgent necessity in the interest of public safety, and even that permit is capped at 3 days or the length of the emergency, whichever is shorter.
Hillsboro Nighttime Construction Noise Curfew
Some RestrictionsHillsboro Municipal Code § 6.24.010; § 6.24.040(E)
6.24.010. - Unnecessary Noise. It is unlawful for any person to make, assist in making, allow or perpetuate the continuance of any unauthorized, disturbing or unnecessary noise. ... 6.24.040. - Specific Noises. The following acts are a violation of this subchapter when the noise level exceeds those specified in HMC 6.24.030 unless exempt under HMC 6.24.050: ... E. Erection, excavation, demoliti...
Construction Hours
Portable construction and lawn tools, saws, mowers, edgers, are exempt from Hillsboro's noise limits only between 6 a.m. and 9 p.m. on weekdays and 8 a.m. and 6 p.m. on weekends; using them outside those windows exposes the noise to the standard limits.
Hillsboro Construction Tool Noise Hours
Some RestrictionsHillsboro Municipal Code § 6.24.050(H)
Sounds caused by air-, electric- or gas-driven domestic tools, including lawn mowers and edgers, radial arm, circular and table saws, and other similar lawn or construction tools, excluding tools used for vehicle repair, between 6:00 a.m. and 9:00 p.m., Monday through Friday and between 8:00 a.m. and 6:00 p.m., Saturday and Sunday;I.Sounds caused by chainsaws, when used for pruning, trimming or...
Barking Dogs
Hillsboro bars keeping an animal that causes unnecessary annoyance, alarm or disturbance heard beyond your property line, whether the noise runs continuously for at least 10 minutes or intermittently for at least 30 minutes, under Hillsboro Municipal Code § 6.20.020(A). It's an affirmative defense if someone other than the keeper provoked the animal, and licensed animal-services facilities are exempt from the noise standard itself.
Hillsboro Barking Dog & Animal Noise Rule
Some RestrictionsHillsboro Municipal Code § 6.20.020(A)-(D)
A. No keeper may allow an animal to cause unnecessary annoyance, alarm or disturbance to any person or neighborhood by making sounds that may be heard beyond the boundary of the keeper's property such that the sounds are shown to have occurred either as continuous noise lasting for a minimum 10 consecutive minutes or intermittently for a minimum of 30 minutes. B. It is an affirmative defense to...
Leaf Blower Rules
Hillsboro exempts lawn tools, including leaf blowers, mowers, and edgers, from its noise ordinance only between 6 a.m.-9 p.m. weekdays and 8 a.m.-6 p.m. weekends; use outside those hours is a citable noise violation.
Hillsboro Leaf Blower & Lawn Tool Hours
Some RestrictionsHillsboro Municipal Code § 6.24.050(H)
Sounds caused by air-, electric- or gas-driven domestic tools, including lawn mowers and edgers, radial arm, circular and table saws, and other similar lawn or construction tools, excluding tools used for vehicle repair, between 6:00 a.m. and 9:00 p.m., Monday through Friday and between 8:00 a.m. and 6:00 p.m., Saturday and Sunday; I. Sounds caused by chainsaws, when used for pruning, trimmin...
Amplified Music & Outdoor Sound
Amplified sound at outdoor facilities in Hillsboro, Oregon must stay within the city's dBA noise limits unless the City Manager authorizes a temporary overage capped at 50 minutes per hour, 4 hours per weekend, or 3 hours on weekday evenings.
Hillsboro Outdoor Amplified Sound Limits
Some RestrictionsHillsboro Municipal Code § 6.24.040(F)
Issuing of amplified sound in an outdoor facility except under all of the following conditions:1.Sound levels at the perimeter of the facility do not exceed the maximum levels under this subchapter;2.If the City Manager authorizes noise to exceed the limits under HMC 6.24.030, continued amplified sound may not be transmitted more than:a.Fifty minutes of each hour;b.Four hours of any 8-hour bloc...
Aircraft Noise
Hillsboro's local noise limits do not apply to aircraft, including helicopters, because HMC 6.24.050(D) exempts sounds regulated by federal law, leaving aviation noise to FAA rules rather than city ordinance.
Hillsboro Helicopter Noise Exemption
Few RestrictionsHillsboro Municipal Code § 6.24.050(D)
Sounds regulated by federal law, including, but not limited to, sounds caused by railroads or aircraft;E.Sounds caused by demolition activities when performed under a permit issued by the appropriate governmental authorities;F.Sounds caused by industrial, agricultural or construction activities between 6:00 a.m. and 9:00 p.m., other than sounds regulated under subsection (E) of this section and...
Decibel Limits
Hillsboro's noise code sets separate decibel caps for industrial-zoned property: 70 dBA between industrial neighbors around the clock, but only 50 dBA at night and 60 dBA by day when the sound reaches a non-industrial zone.
Hillsboro Industrial Noise Standards
Some RestrictionsHillsboro Municipal Code § 6.24.030
sound that exceeds the limits in Table 6.24.030-A: Table 6.24.030-A, Noise Limits Zone of Noise Producer Zone of Noise Receiver Night (between 9 p.m. and 6 a.m. the following day) Day (between 6 a.m. and 9 p.m.) Industrial (I-G, I-P and I-S) Industrial (I-G, I-P and I-S) 70 dBA 70 dBA Industrial (I-G, I-P and I-S) All other 50 dBA 60 dBA All Other All other 50 dBA 60 dBA (Or...
Vehicle Noise
Hillsboro bans motor vehicle horns except as danger signals, restricts exhaust brake use to emergencies, and prohibits operating any vehicle so as to create loud or unnecessary sounds, grating, grinding, or rattling noise.
Hillsboro Vehicle Noise Rules
Some RestrictionsHillsboro Municipal Code § 6.24.040(A), (D)
Sounding of any horn, signal or other device on a motor vehicle, while in motion, except as a danger signal. Exhaust brakes may only be applied to stop or slow during an emergency;B.Use of sound-producing devices including musical instruments, loudspeakers, amplifying devices, public address systems, radios, television sets, computers and any other electronic devices that play back audio or aud...
Looking for Washington County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Hillsboro city rules.
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