Noise from Specific Sources in Portland, OR (2026)
3 verified noise from specific sources rules for Portland, Oregon, sourced directly from the municipal code and official government pages.
Verified from official government sources
HVAC & Mechanical Noise
Portland has no HVAC-specific noise rule; air conditioners, heat pumps and other stationary equipment fall under the citywide zone-based decibel limits, capped at 55 dBA into a neighbor's residential property and cut 5 dBA further overnight.
Portland HVAC Equipment Noise Limits
Some RestrictionsPortland City Code § 18.10.010
Except as specifically provided for elsewhere in this Title, no person shall cause or permit sound to intrude into the property of another person which exceeds the limits set forth below in this Section. For purposes of this Section, “day hours” shall be between 7 a.m. and 10 p.m., and “night hours” shall be between 10 p.m. and 7 a.m. A. The sound levels established are as set forth in Figur...
Bar & Nightclub Noise
Portland bars, taprooms, and nightclubs with amplified music must not cause a noise disturbance, and after 10 p.m. their sound cannot be plainly audible inside a nearby dwelling until 7 a.m.
Portland Bar and Nightclub Noise
Some RestrictionsPortland City Code § 18.12.020 B
Sound producing or reproducing equipment. Operating or permitting the use or operation of any device designed for sound production or reproduction in such a manner as to cause a noise disturbance; or operating or permitting the operating or use of any such device between the hours of 10:00 p.m. and 7:00 a.m. so as to be plainly audible within any dwelling unit that is not the source of sound...
Car Alarm Limits
Portland bans parking or stopping a vehicle whose alarm doesn't shut itself off within an aggregate three minutes during any 15-minute period, on any public street or in a public park.
Portland's 3-Minute Car Alarm Cutoff
Some RestrictionsPortland City Code § 16.20.120(A)
While such vehicle is equipped with a vehicle alarm unless such system is designed to, and does in fact, cease emitting an intermittent or constant sound after an aggregate time of three minutes within a 15-minute period on any public right-of-way or in a public park. B. To angle load/unload (except within a legal angle parking space) on any street unless specifically authorized by an angle l...
Looking for Multnomah County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Portland city rules.
Noise from Specific Sources in Multnomah County →