Gaithersburg, MD Public Conduct: Loud Party Ordinance (2026)

Section 15-8 of the Gaithersburg City Code makes it unlawful for any person or business entity to operate or permit the operation of noise-producing instruments, devices or equipment in a manner or at a time that disturbs the peace and quiet of city residents. The section lists specific conduct that automatically counts as a public nuisance, and the one most often used against a loud house party is subsection (b): playing or operating radios, stereos, television sets or similar devices between 10:00 p.m. and 8:00 a.m. that are audible beyond the confines of the dwelling unit where the sound originates, or, if the equipment is outdoors, audible beyond the nearest common property line during those same hours.

The Gaithersburg City Code does not include a separate party ordinance or a host-liability clause naming the person who threw the gathering; instead, officers responding to a loud gathering enforce Section 15-8 against whoever is operating or permitting the operation of the offending equipment, which in practice is usually the resident hosting the party. The section also reaches lawnmowers and power tools under subsection (a) and vehicle noise under subsection (c), so a party that spills outside with amplified music, a generator or vehicles idling with stereos running can draw a citation on more than one ground. The ordinance was adopted by Ordinance No. O-5-95 on June 5, 1995.