Noise Ordinances in Issaquah, WA (2026)
7 verified noise ordinances for Issaquah, Washington, sourced directly from the municipal code and official government pages.
Verified from official government sources
Quiet Hours
Issaquah has no citywide quiet-hours curfew. IMC 9.22.010(C) singles out yelling, shouting, hooting, whistling or singing on or near public streets, particularly between 11:00 p.m. and 7:00 a.m., and applies it at any hour when the noise unreasonably disturbs property owners.
Issaquah Nighttime Noise Hours (IMC 9.22.010)
Light RestrictionsIssaquah Municipal Code § 9.22.010(C)
It is unlawful for any person to cause, or for any person in possession of property to allow to originate from the property, sound that is a public disturbance noise. The following sounds are determined to be public disturbance noises: ... C. Yelling, shouting, hooting, whistling or singing on or near the public streets, particularly between the hours of 11:00 p.m. and 7:00 a.m. or at any time ...
Construction Hours
Nonemergency construction under an approved permit in Issaquah is permitted only between 7:00 a.m. and 6:00 p.m. on weekdays, and not at all on legal holidays defined in RCW 1.16.050. Work outside those hours needs an expanded work hours permit, and fines under IMC 16.35.015 reach $10,000 per violation.
Issaquah Construction Hours: 7 a.m. to 6 p.m. Weekdays
Some RestrictionsIssaquah Municipal Code § 16.35.010(A)-(B)
A. Except as permitted in subsection B of this section, or through a separate franchise agreement with the City, any nonemergency construction activity in conjunction with any approved permits, including but not limited to building permits, utility permits, grading permits or land use certification permits shall be permitted only between the hours of 7:00 a.m. and 6:00 p.m. on weekdays, exclud...
Barking Dogs
Issaquah treats frequent, repetitive or continuous animal noise that unreasonably disturbs the peace, comfort and repose of property owners or possessors as a public disturbance noise under IMC 9.22.010(F). Lawfully operated animal shelters, kennels, pet shops and veterinary clinics are exempt.
Issaquah Barking Dog and Animal Noise Rule
Some RestrictionsIssaquah Municipal Code § 9.22.010(F)
It is unlawful for any person to cause, or for any person in possession of property to allow to originate from the property, sound that is a public disturbance noise. The following sounds are determined to be public disturbance noises: ... F. Frequent, repetitive or continuous ... noise made by any animal which unreasonably disturbs or interferes with peace, comfort and repose of property owner...
Amplified Music & Outdoor Sound
Issaquah bans using a sound amplifier on public streets to advertise or attract attention to a vehicle, structure or property, and bans portable audio equipment audible more than 50 feet from the source when not on the operator's own property. Park events such as baseball public address systems and concerts are exempt under IMC 9.22.010.
Issaquah Amplified Sound and Portable Audio Rules
Some RestrictionsIssaquah Municipal Code § 9.22.010(G), (H), (I)
It is unlawful for any person to cause, or for any person in possession of property to allow to originate from the property, sound that is a public disturbance noise. The following sounds are determined to be public disturbance noises: ... G. The use of a sound amplifier or other device capable of producing or reproducing amplified sound on public streets for the purpose of commercial advertisi...
Aircraft Noise
Issaquah has no decibel limit for aircraft. Its Land Use Code lets the City impose conditions on heliports to limit noise: the type of aircraft, the number of daily takeoffs and landings, and hours of operation. Heliports must join a noise reduction program such as Fly Neighborly.
Issaquah Heliport Aircraft Noise Conditions
Significant RestrictionsIssaquah Land Use Code § 18.508.040(B)-(D)
B. General Review Standards. 1. To limit noise impacts, the City may impose conditions restricting the type of aircraft permitted to land at an approved heliport, and conditions that limit the number of daily takeoffs and landings and hours of operation. ... 2. The facility must participate in a noise reduction program, such as Fly Neighborly; ... 4. Approach and departure paths must be obstruc...
Decibel Limits
Issaquah does not print its own decibel table in the Land Use Code. LUC 18.518.020 adopts four sections of Chapter 173-60 WAC by reference, including the maximum permissible environmental noise levels in WAC 173-60-040, and measures mechanical equipment noise from the nearest property line of the parcel where the equipment sits. Emergency situations are exempt.
Issaquah Noise Limits: WAC 173-60 Adopted by Reference
Some RestrictionsIssaquah Land Use Code § 18.518.020(A)-(C)
A. WAC Sections Adopted by Reference. The City adopts the following sections of Chapter 173-60 WAC, as now existing or hereafter amended, by reference: 1. WAC 173-60-020 , Definitions. 2. WAC 173-60-030 , Identification of environments. 3. WAC 173-60-040 , Maximum permissible environmental noise levels. 4. WAC 173-60-050 , Exemptions. B. No mechanical equipment may be operated so as to produce ...
Vehicle Noise
Issaquah bars frequent or continuous horn and siren use, repetitive engine and repair noise in residential districts, and vehicle audio systems audible more than 50 feet from the vehicle. IMC 9.22.010 covers these, and IMC 10.44.030 separately prohibits engine compression brakes.
Issaquah Vehicle Noise Rules: Horns, Engines, Stereos
Some RestrictionsIssaquah Municipal Code § 9.22.010(A), (B), (E)
It is unlawful for any person to cause, or for any person in possession of property to allow to originate from the property, sound that is a public disturbance noise. The following sounds are determined to be public disturbance noises: A. The frequent, repetitive or continuous sounding of any horn or siren attached to a motor vehicle, except as a warning of danger or as specifically permitted o...
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