Noise Ordinances in Grant County, WA (2026)
6 rules for unincorporated Grant County, Washington.
Verified from official government sources
Quiet Hours
Unincorporated Grant County has no blanket nighttime noise curfew. Instead, § 6.24.050(b) exempts specific noises, aircraft engine testing, shooting-range firearms discharge, and blasting, from the noise chapter only from 7 a.m. to 10 p.m., so outside that window they fall under the general noise-disturbance prohibition in § 6.24.040.
Grant County Nighttime Noise Rules
Light RestrictionsGrant County Code § 6.24.050(b)
(b)The following noises shall be exempt from this chapter from seven a.m. through ten p.m.:(1)Sounds created by aircraft engine testing and maintenance not related to flight operations;(2)Sounds created by the discharge of firearms on authorized shooting ranges and casual target practice; and(3)Sounds created by blasting.
Construction Hours
In unincorporated Grant County, construction site noise is exempt from the county's noise chapter only from 7 a.m. to 10 p.m., or at any hour if the site sits more than one thousand feet from an occupied residence, under Grant County Code § 6.24.050(c)(1).
Grant County Construction Noise Hours
Some RestrictionsGrant County Code § 6.24.050(c)
(c)The following noises shall be exempt from seven a.m. through ten p.m., or when conducted beyond one thousand feet of any residence where human beings reside and/or sleep, at any hour:(1)Sounds emanating from temporary construction sites;
Barking Dogs
Unincorporated Grant County bans keeping or harboring any animal, including dogs, whose frequent or repetitive noisemaking unreasonably interferes with neighbors' peace in residential districts, under Grant County Code § 6.24.020(1). Commercial kennels, shelters, vet hospitals, pet shops and breeders are excluded from the rule.
Grant County Barking Dog Noise Rules
Some RestrictionsGrant County Code § 6.24.020
(1)Keeping or harboring any animal, including without limitation, dogs, whose frequent or repetitive noisemaking unreasonably interferes with the peace and comfort of persons in residential districts. This chapter shall not apply to commercial kennels, animal shelters, veterinary hospitals, pet shops, grooming parlors, commercial dog breeders, or any similar business.
Amplified Music & Outdoor Sound
Unincorporated Grant County treats frequent, repetitive or continuous sounds from musical instruments, TVs, stereos, radios, band sessions or social gatherings in a residential area as a public noise disturbance under § 6.24.020(3) if they unreasonably disturb neighbors. Violators face civil infractions rising to misdemeanor penalties under § 6.24.070.
Grant County Amplified Sound Rules
Some RestrictionsGrant County Code § 6.24.020
(3)Frequent, repetitive or continuous sounds which emanate from, or are created in, a residential area, which unreasonably disturb or interfere with the peace and comfort of owners or possessors of real property or, users of public property, including without limitation: sounds from musical instruments, televisions, audio sound systems, radios, band sessions or social gatherings.
Aircraft Noise
Grant County's Airport Safety Overlay (ASO) zoning district restricts new buildings and outdoor uses near Grant County International, Ephrata, Moses Lake Municipal and four other county airports. GCC § 23.04.645 requires proposals inside a mapped 65 Ldn aircraft noise zone to prove they meet interior noise standards before the county will issue a permit.
Grant County Airport Safety Overlay Noise Rules
Significant RestrictionsGrant County Unified Development Code § 23.04.645
(a)Purpose: ... The purpose of the Airport Safety Overlay (ASO) zoning district is to recognize and protect the airspace around state and federal system airports from airspace obstructions and hazards and incompatible land uses and to protect public health, safety and general welfare within the ASO zone. ... (D)Is not within an identified future 65 Ldn (Interior Day-Night Average Sound Level) a...
Vehicle Noise
In unincorporated Grant County, § 6.24.020 bans motor vehicles without a working muffler and stereo systems audible more than seventy-five feet away. Section 6.24.040 makes any resulting motor vehicle noise disturbance unlawful countywide, and the Sheriff's Office can issue civil infractions with escalating fines under § 6.24.070.
Grant County Vehicle Noise Rules
Some RestrictionsGrant County Code § 6.24.020
(2)The operation of a motor vehicle upon a public highway which is not equipped with a muffler in good working order and in constant operation. ... (4)The operation, use, or possession of a motor vehicle audio equipment or sound systems, such as but not limited to, a radio, a tape player or a compact disc player, which is operated at such a volume so as to be audible at a distance of seventy-fi...
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