Fairfax County Noise Ordinance: Decibel Limits, Hours, and Fines

The Fairfax County noise ordinance, codified as Chapter 108.1 of the County Code, caps sound levels by zoning district and time of day, sets specific restricted hours for construction, amplified sound, animals, and other common noise sources, and backs those rules with civil fines up to $500 or Class 2 misdemeanor charges carrying up to six months in jail and a $1,000 fine.¹ What counts as a violation depends on where you live, what’s making the noise, and what time it’s happening.

Decibel Limits Where You Live

Continuous sound is measured in A-weighted decibels (dBA) at the property line of the source or anywhere inside the affected property. The cap depends on zoning:¹

Residential areas in residential districts: 60 dBA from 7 a.m. to 10 p.m., 55 dBA from 10 p.m. to 7 a.m.
Non-residential areas in residential districts: 60 dBA at all times.
Mixed-use areas: 65 dBA from 7 a.m. to 10 p.m., 60 dBA from 10 p.m. to 7 a.m.
Commercial districts: 65 dBA at all times.
Industrial districts: 72 dBA from 7 a.m. to 10 p.m., 65 dBA from 10 p.m. to 7 a.m.

Sharp, sudden noises like hammering or gunshots are governed by a separate impulse sound scale, measured in unweighted decibels, running from 80 dB at night in residential zones up to 120 dB during the day in industrial ones.¹

Restricted Hours by Activity

There is no single “quiet hours” cutoff. Each type of noise has its own window, and this is where residents and contractors most often trip up.

Construction

Outdoor construction, demolition, and grading are prohibited from 9 p.m. to 7 a.m. Sunday through Thursday, and from 9 p.m. to 9 a.m. on Fridays, Saturdays, and the day before a federal holiday.¹ During permitted hours, construction in residential areas cannot exceed 90 dBA, and weekend and holiday work cannot start before 9 a.m.²

People, Vehicles, Instruments, and Speakers

Outdoor loudspeakers and sound-amplification devices are prohibited from 10 p.m. to 7 a.m.² During the day, the general decibel limits still apply, so a backyard speaker system pushing past 60 dBA at a neighbor’s property line in a residential zone is a violation whatever the hour.

Noise from a person, motor vehicle, or any device that produces or amplifies sound (radios, stereos, instruments) is prohibited during restricted hours if it is plainly audible inside another person’s home with doors and windows closed. Those hours are 10 p.m. to 7 a.m. Sunday through Thursday, and 11 p.m. to 7 a.m. on Fridays, Saturdays, and the night before a federal holiday. In mixed-use areas where the source is non-residential, the cutoff extends to 1 a.m. on those weekend and pre-holiday nights.²

Other Time-Restricted Sources

Outdoor vehicle or mechanical repair: prohibited 9 p.m. to 7 a.m.
Powered model vehicles, including RC cars and drones: prohibited 9 p.m. to 7 a.m.
Trash and recycling collection near residences: prohibited 9 p.m. to 6 a.m.
Truck loading and unloading near residences: prohibited 9 p.m. to 6 a.m.
Bells, carillons, and calls to worship: prohibited 10 p.m. to 7 a.m.²

Barking Dogs and Other Animal Noise

Animal noise gets its own standard. Between 10 p.m. and 7 a.m., any animal noise plainly audible inside another home with doors and windows closed is a violation. Between 7 a.m. and 10 p.m., the noise must be audible across property lines and continue for more than five minutes within any ten-minute period.² A dog that barks briefly at a delivery driver is not covered. Sustained, repetitive barking is.

Animals responding to pain, injury, or a genuine threat are not covered, police dogs performing their duties are exempt, and legitimate agricultural noise doesn’t count.

What the Ordinance Doesn’t Cover

Several sources residents commonly complain about are exempt or beyond the county’s authority.¹

Emergency work, including overnight utility repairs, and emergency signals during actual emergencies.
Snow and ice removal at any hour.
Traffic on public roads (state law still applies to vehicles).
Heat pumps, air conditioners, and pool pumps on single-family residential property.
Backup generators during power outages; routine testing is allowed 7 a.m. to 9 p.m. for up to two hours per day.

Power lawn equipment is not blanket-exempt but has its own schedule: within 100 yards of a residence, mowers and leaf blowers may run 7 a.m. to 9 p.m.; beyond 100 yards, from 6 a.m. to 9 p.m.²

Aircraft noise is preempted by federal law: the FAA has exclusive authority, so the county cannot restrict flights from Dulles or Reagan National regardless of impact on neighborhoods.³ Train horns are similarly preempted; federal rules require locomotive horns at all public highway-rail grade crossings, and communities can silence them only by applying for a “quiet zone” with compensating safety measures at each crossing.⁴ Railroad track maintenance is also exempt under the county ordinance.¹

How to Report a Violation

Where you call depends on whether the noise is happening right now or is a recurring problem.

For noise happening in real time, call the Fairfax County Police non-emergency line at 703-691-2131.⁵ Police investigate complaints about noise from people, animals, motor vehicles, and amplified instruments that is audible inside your home with doors and windows closed.⁶ If police cannot respond after hours, you can still submit the incident to the Department of Code Compliance for follow-up.

For ongoing problems, file with the Department of Code Compliance (DCC) through the county’s PLUS portal, by phone at 703-324-1300 (Monday through Thursday 8 a.m. to 4 p.m., Friday 9:15 a.m. to 4 p.m.), by email at codecompliance@fairfaxcounty.gov, or in person at 12055 Government Center Parkway, Suite 1016, Fairfax, VA 22035. Include the source address, a description of the sound, times and days it occurs, how long it has been going on, and your contact information. Investigators will schedule a visit, including at night if needed.⁷

Fines and Criminal Penalties

Every violation of Chapter 108.1 is a Class 2 misdemeanor under Virginia law. A conviction can bring up to six months in jail, a fine of up to $1,000, or both. If a court orders someone to stop the violation and they fail to do so within the required timeframe, that failure is a separate misdemeanor offense.¹

Instead of pursuing criminal charges, the county can impose civil penalties: up to $250 for a first violation and $500 for each subsequent offense. Civil penalties are not available for noise from industrially zoned property, railroads, or areas permitted by the Virginia Department of Energy (formerly Mines, Minerals and Energy).¹

The county can also seek a court injunction forcing compliance, alongside either the criminal or the civil track. That is the tool used when fines alone haven’t stopped the problem.¹

1
Municode. Fairfax County Code of Ordinances – Chapter 108.1 Noise Ordinance
2
Fairfax County, Virginia. Noise Ordinance – Sound Summary Chart
3
Federal Aviation Administration. Noise Control Act of 1972 – Legislative History
4
Congressional Research Service. The Federal Railroad Administration’s Train Horn Rule
5
Fairfax County, Virginia. Calling Non-Emergency
6
Fairfax County, Virginia. Fairfax County Noise Ordinance
7
Fairfax County, Virginia. How to Report a Violation to DCC