Noise Ordinances in Snohomish County, WA (2026)

SCC 10.01.030(3)(b)

(2) Maximum permissible sound levels. Measurement of sound levels from all sources except motor vehicles on public roads shall be made at or within the property boundary of the receiving property. ... (3) Modifications to maximum permissible sound levels. ... (b) At night, as defined in sub-section 10.01.020 (18), the maximum permissible sound levels are reduced by ten dB(A) where the receiving...

SCC 10.01.040(2)(c)

(2) Public Disturbance Noises, at Night in Rural or Residential Districts. Sounds resulting from the following activities are determined to be public disturbance noises when they occur at night and noise is received on property in a rural or residential district. ... (c) Construction activity, including blasting, unless a public disturbance exemption permit pursuant to SCC 10.01.050(6) is obtai...

SCC 10.01.040(1)(a)

(a) Keeping or harboring any animal or animals whose frequent, repetitive or continuous noisemaking unreasonably interferes with the peace and comfort of persons in rural or residential districts, except farm animals in zones where farm animals are allowed and except the keeping or harboring of animals in commercial kennels, animal shelters, veterinary hospitals, pet shops, and grooming parlors...

SCC 10.01.040(2)(a)

Operation within a rural or residential district of any mechanically powered saw, drill, sander, grinder, blower, fan, garden tool or similar device, except devices engaged in emergency work exempted under section SCC 10.01.050(1)(g).

SCC 10.01.040(1)(g)(ii)

(g) The creation, by use of a musical instrument, sound amplifier or other device capable of producing or reproducing sound, of sounds heard as comprehensible music rhythms or felt: (i) Within a residence not originating the noise, or (ii) Outdoors in a commercial, rural or residential district at a distance of 75 feet or more from the noise source. Such sounds include band sess...

SCC 10.01.050(1)(a)

(1) Sounds Exempt at All Times. The following sounds are exempt, at all times, from the maximum permissible sound levels established in SCC 10.01.030(2) and 10.01.030(3), except that such sounds produced by operations or activities requiring the issuance of a Conditional Use Permit or a SEPA determination shall only be exempt in so far as the conditions of the Conditional Use Permit or SEPA det...

WAC 173-60-040

No person shall cause or permit noise to intrude into the property of another person which noise exceeds the maximum permissible noise levels set forth below in this section. ... Between the hours of 10:00 p.m. and 7:00 a.m. the noise limitations of the foregoing table shall be reduced by 10 dBA for receiving property within Class A EDNAs.

SCC 10.01.040(1)(b)-(d)

(1) Public Disturbance Noises, Day and Night. Sounds resulting from the following activities, occurring at any hour of the day or night, are determined to be public disturbance noises. ... (b) The use of unmuffled exhaust systems on motor vehicles, off-road vehicles and recreational watercraft. (c) Creation of frequent, repetitive or continuous sounds in connection with starting, repairing, ope...