Noise Ordinances in Montgomery County, MD (2026)

Montgomery County Code § 31B-5(a)-(b)

Except as otherwise provided in Sections 31B-6(a), 31B-6A, and 31B-8, a person must not cause or permit noise levels that exceed the following levels: Maximum Allowable Noise Levels (dBA) for Receiving Noise Areas Daytime Nighttime Non-residential noise area 67 62 Residential noise area 65 55. ... (b) Noise disturbance. A person must not cause or permit noise that creates a noise disturbance.

Montgomery County Code § 31B-6(a)-(b)

A person must not cause or permit noise levels from construction activity that exceed the following levels: From 7 a.m. to 5 p.m. weekdays: 75 dBA if the Department has not approved a noise-suppression plan for the activity; or 85 dBA if the Department has approved a noise-suppression plan for the activity... The level specified in Section 31B-5 at all other times.

Montgomery County Code Chapter 5, Section 5-203 (Public Nuisance Laws - Animal Noise)

Animal Noise (Montgomery County Code, Sec. 5-203(a)(6)) - An owner must not allow an animal to cause noise that is loud enough and persistent enough to disturb another person's quiet enjoyment. ($100 fine). Unsanitary conditions - (Montgomery County Code, Sec. 5-203(a)(5)) - An owner must not allow an animal to cause an unsanitary, dangerous or offensive condition because of the size or number ...

Montgomery County Code § 31B-9(e)-(f)

(e) Sale of combustion leaf removal equipment – prohibited. A person must not sell or offer for sale a combustion engine-powered handheld, backpack, or walk-behind leaf blower or leaf vacuum. (f) Use of combustion leaf removal equipment – prohibited. A person must not use a combustion engine-powered handheld, backpack, or walk-behind leaf blower or leaf vacuum.

Montgomery County Code § 31B-5(a)(1), (c)(5)

a person must not cause or permit noise levels that exceed the following levels: ... Non-residential noise area 67 62 ... Residential noise area 65 55 ... (5) Operating a device that produces, reproduces, or amplifies sound.

Montgomery County Code § 31B-5(a)

a person must not cause or permit noise levels that exceed the following levels: Maximum Allowable Noise Levels (dBA) for Receiving Noise Areas Daytime Nighttime Non-residential noise area 67 62 Residential noise area 65 55 (2) A person must not cause or permit the emission of a prominent discrete tone or impulsive noise that exceeds a level, at the location on a receiving property wh...

Montgomery County Code § 31B-5(c)(1), (7)

(c) Examples. ...acts that violate this section if they exceed the noise level standards set in subsection (a) or create a noise disturbance: (1) Sounding a horn or other signaling device on any motor vehicle on private property except: ...in an emergency; or ...as a danger warning signal during daytime hours if the device complies with noise level limits. ...(7) Operating power equipment mount...