How Portland Handles Noise from Specific Sources: A Practical Guide
Portland maintains 144 local ordinances across all categories, and 3 of those deal specifically with noise from specific sources. Here is a breakdown of what the city actually requires, what is prohibited, and where Portland falls on the strict-to-permissive spectrum compared to other cities.
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.
Key details: Night cutoff: 10 p.m.-7 a.m., audible in dwelling. Commercial-to-residential day limit: 60 dBA at property line. Commercial-to-residential night limit: 55 dBA (5 dBA night reduction). Max civil penalty: $5,000 per violation. Enforcer: Portland Permitting & Development / Police.
Civil penalties up to $5,000 per separate violation under Section 18.18.030, with each incident and each day of noncompliance counted separately; the City Administrator weighs repeat offenses and cost of investigation when setting the fine.
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.
Key details: Residential-to-residential limit: 55 dBA day, 50 dBA night. Measured at: property line. Enforcement: Noise Control Officer. Max civil penalty: $5,000 per violation. Relief option: variance via Noise Review Board.
Civil penalty up to $5,000 per separate violation; each day of noncompliance is a separate violation. Citations must be answered within 15 days or referred for City Administrator review.
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.
Key details: Cutoff window: 3 min within any 15 min. Applies to: parked or stopped vehicles. Where: public right-of-way or public park. Enforced by: City parking enforcement officers.
Parking enforcement officers under the City Administrator can cite the vehicle under Chapter 16.20's general parking-violation authority and, per Portland City Code § 3.30, order towing and storage in enforcement of parking prohibitions.
The Bottom Line
Portland's noise from specific sources rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Portland is broadly strict or permissive.
All of the above reflects Portland's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.