Noise Ordinances in Portland, OR: What Residents Actually Need to Know

If you live in Portland or are thinking about moving there, noise ordinances are one of those things you probably won't think about until they affect you directly. Portland has 8 specific rules on the books covering different aspects of noise ordinances, and some of them might surprise you.

Vehicle Noise

Portland requires every motor vehicle on public roads to run a working muffler, bans exhaust cutouts and screeching tires, and prohibits engine/compression brakes near homes for trucks over 10,000 pounds.

Key details: Muffler requirement: Must be in good working order. Exhaust cutouts/bypass: Banned on public streets. Engine/compression brakes: Banned near homes, trucks over 10,000 lbs. Citation response window: Court appearance within 28 days. Governing code: Portland City Code § 18.10.020.

Citation for muffler, cutout, screeching-tire, or engine-brake violations requires a court appearance within 28 days; a DEQ compliance certificate can dismiss it before the hearing.

Quiet Hours

Portland bars running sound equipment between 10 p.m. and 7 a.m. if it's plainly audible inside a neighboring dwelling, and separately cuts citywide ambient noise limits by 5 dBA overnight, backed by civil penalties up to $5,000 per violation.

Key details: Curfew hours: 10 p.m. to 7 a.m.. Core standard: Plainly audible inside a dwelling. Ambient limit at night: Drops 5 dBA overnight. Max civil penalty: $5,000 per violation. Enforcer: City Administrator's Noise Control Officer.

Up to $5,000 civil penalty per violation under § 18.18.030; each incident and each day of continued noncompliance counts as a separate violation, enforced by the City Administrator's Noise Control Officer.

Aircraft Noise

Homes within PDX's 65 and 68 DNL noise contours must meet a 45 dBA interior noise standard, sign a recorded noise disclosure statement, and grant the Port of Portland a noise easement before building permits issue.

Key details: Interior noise standard: 45 dBA day/night average. 68 DNL zone: New residential uses prohibited. Easement holder: Port of Portland. Noise contours mapped: 55, 65, and 68 DNL.

Building permits for new or reconstructed housing are withheld until the noise disclosure statement is recorded and, in the 65/68 DNL zones, the noise easement and insulation certification are on file.

This is not one of those rules that cities tend to ignore. Portland actively enforces its aircraft noise requirements.

Amplified Music & Outdoor Sound

Amplified outdoor music in Portland must stay within Title 18's zone-based decibel limits: only non-amplified sound from athletic and entertainment events is exempt.

Key details: Residential limit: 55 dBA at property line, day. Night reduction: minus 5 dBA, 10pm-7am. Non-amplified exemption: only unamplified event sound exempt. Louder event option: variance via § 18.14.020. Max civil penalty: $5,000 per violation.

Civil penalty up to $5,000 per violation (§ 18.18.030); each incident and each day of noncompliance counts as a separate violation, enforced by the City Administrator or police.

Leaf Blower Rules

Portland bars gasoline leaf blowers citywide from January through September starting in 2026, expanding to a year-round ban in 2028; electric blowers stay legal under City Code Chapter 17.101.

Key details: Seasonal ban starts: January 1, 2026. Ban window: January 1 – September 30 yearly. Full year-round ban: Starts January 1, 2028. Enforced by: City Administrator. Repeat penalty: Up to $1,000 per day.

A first violation gets a warning; a second draws a civil penalty up to $250, a third up to $500, and a fourth or later up to $1,000. Each day an owner remains in violation counts as a separate offense, enforced by the City Administrator.

This is one of the stricter rules in Portland's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Decibel Limits

Portland caps industrial-zoned noise sources at 65-75 dBA measured at the property line, with the exact ceiling depending on the zoning of the receiving property, plus a five dBA cut during night hours.

Key details: Industrial-to-industrial limit: 75 dBA at property line. Industrial-to-residential limit: 65 dBA at property line. Night-hours reduction: additional 5 dBA, 10pm-7am. Impulsive sound cap: 100 dB day, 80 dB night. Enforcing office: Noise Control Officer.

The City Administrator's Noise Control Officer issues citations for exceeding Chapter 18.10 sound levels; the Noise Review Board hears variance requests under Chapter 18.14, and unresolved violations proceed through municipal code enforcement.

Barking Dogs

Portland bans animal noise that unreasonably disturbs neighbors: barking, whining, or howling must run continuously for 10 minutes or intermittently for 30 minutes to count as a violation.

Key details: Continuous noise threshold: 10 minutes minimum. Intermittent noise threshold: 30 minutes total. Enforcing agency: Multnomah County Animal Control. Permitted facilities: Separate rule, § 18.12.020 A.2.

Enforced by Multnomah County Animal Control as a noise disturbance violation of Title 18; complaints are handled as code violations, not a criminal matter, and repeat or unresolved cases can escalate to citation.

Construction Hours

Commercial construction equipment may run up to 85 dBA from 7 a.m. to 6 p.m. weekdays and Saturdays. From 6 p.m. to 7 a.m. daily, all day Sunday, and on legal holidays, only the lower general noise limits apply, barring loud construction work without a variance.

Key details: Max construction noise: 85 dBA at 50 feet. Allowed hours: 7 a.m.–6 p.m. weekdays/Sat. Restricted hours: 6 p.m.–7 a.m. nightly, all Sunday. Pile driver cutoff: 6 p.m.–8 a.m., Fri–Mon. Max civil penalty: $5,000 per violation.

Civil penalty up to $5,000 per violation, with each day of noncompliance a separate violation; enforced by the City Administrator, who may also assess monthly enforcement fees and record a property lien if a citation goes uncorrected.

The Bottom Line

Portland is tougher than many cities when it comes to noise ordinances. Out of the 8 rules covered here, 2 are rated strict. If you are a homeowner, renter, or business owner in Portland, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

Keep in mind that Portland can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.