Gaithersburg, MD
Noise Code
The official quiet hours, decibel limits, and enforcement protocols for Gaithersburg, MD.
Ordinance Summary
Gaithersburg, MD, adheres to the Montgomery County Noise Control Law (Chapter 31B). This ordinance prohibits noise disturbances, with quiet hours generally from 9 PM to 7 AM on weekdays and 9 PM to 9 AM on weekends/holidays, during which noise cannot exceed 55 dBA at residential property lines. Construction noise is capped at 75 dBA.
Quiet Hours
9 PM to 7 AM (weekdays), 9 PM to 9 AM (weekends and holidays)
Decibel Limits
"Montgomery County's noise control law establishes a 55 dBA limit at the residential receiving property line during quiet hours. For amplified sound, 55 dBA is the limit at the receiving property line in a residential zone. A 'noise disturbance' is unlawful at any time."
Measure Noise Levels Instantly
Use our free browser-based decibel meter to check if your neighbors are violating the Gaithersburg, MD code.
Specific Noise Restrictions
Construction noise must not exceed 75 dBA. Higher decibel levels may be permitted under an approved Noise Suppression Plan.
Operating a radio, television, or other electronic sound-producing device is unlawful if the sound exceeds 55 dBA at the receiving property line in a residential noise zone.
Allowing an animal to create a noise disturbance is illegal. For nuisance complaints such as barking dogs, call 301-279-8000 and press 2.
Noises associated with motorized vehicles on public roadways are regulated under the State Motor Vehicle Code by the Police, and are not subject to enforcement under the Montgomery County Noise Control Law.
Frequently Asked Questions
Quiet Hours?
9 PM to 7 AM (weekdays), 9 PM to 9 AM (weekends and holidays).
Construction?
Usually limited to daytime hours (e.g. 7am-6pm). Check 'Specific Restrictions' above.
Who to call?
Use Non-Emergency Police: Montgomery County Police Non-Emergency: 301-279-8000; Gaithersburg Police Department: 301-258-6400.
Fines?
Commonly range from $50 to $500 for initial offenses.
Noise Solutions for Gaithersburg, MD
SolvedBest Gear for Gaithersburg, MD Residents
Ultrasonic Bark Control
Humane deterrent that emits a high-frequency sound when it detects barking.
Loop Quiet Ear Plugs
The "gold standard" for sleeping. Reduces noise by 24dB without the pain of foam plugs.
1/2" Thick Rug Pad
Essential for the "80% Rule." Adds density to rugs to absorb footfall impact noise for downstairs neighbors.
Hemp Calming Chews
Natural relief for dog anxiety. Perfect for separation anxiety barking or fear of fireworks.
ThunderShirt for Dogs
The best solution for anxiety-induced barking (fireworks, thunder, separation).
Marpac Dohm Classic
The original fan-based machine. Unlike digital loops, this creates real rushing air sound.
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