Issaquah, WA Noise Ordinances: Construction Hours (2026)
Construction hours in Issaquah, WA, sometimes called construction noise rules or contractor work-hour ordinances, set when contractors can run power tools, hammers, and heavy equipment.
Key Facts
- Permitted hours
- 7:00 a.m. to 6:00 p.m., weekdays only
- Legal holidays
- No construction activity, as defined in RCW 1.16.050
- Expanded hours approval
- Development Services Director or Public Works Engineering Director
- Class 0 application
- Minor construction valued under $15,000
- Highest fine
- $10,000 per violation, Class 2 second and third violations
- Appeal deadline
- 5:00 p.m. on the fourteenth day after the decision
Summary
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.
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, excluding weekdays that are legal holidays, as observed by State law and defined in RCW 1.16.050 , when no such construction activity shall be permitted. Regular municipal maintenance and operations construction activities not covered by City permit are not subject to the limitations of this chapter. B. Construction activity may be permitted outside the hourly limits set forth in subsection A of this section (“expanded work hours”) only upon application and approval by the City Development Services Director or by the Director of Public Works Engineering, as determined by the Mayor, or their designees. The application fee established in the Land Use and Site Work Fee Schedule shall be paid for review and potential issuance of the expanded work hours permit.
Full Breakdown
Chapter 16.35 of the Issaquah Municipal Code sets the construction hours rule. Section 16.35.010(A) limits any nonemergency construction activity in conjunction with approved permits, including building permits, utility permits, grading permits and land use certification permits, to 7:00 a.m. through 6:00 p.m. on weekdays. Weekdays that are legal holidays, as observed by State law and defined in RCW 1.16.050, are excluded, so no construction activity is permitted on them. A separate franchise agreement with the City is the only other exception to the hourly limit. Regular municipal maintenance and operations construction activities not covered by a City permit are not subject to the chapter.
Section 16.35.005 defines construction activity broadly: any activity related to an active, permitted project, including constructing, enlarging, altering, repairing, maintaining, moving or demolishing any structure, sidewalk, driveway, path, accessory structure, landscape feature, mechanical equipment or vehicle.
Expanded work hours are available under 16.35.010(B) only on application and approval by the City Development Services Director or the Director of Public Works Engineering, as determined by the Mayor, or their designees. The applicant pays the application fee in the Land Use and Site Work Fee Schedule. Under 16.35.010(C) the Development Services Director sets the review procedures and approval criteria so that the extended hours will not unreasonably disturb persons or property in the vicinity and stay consistent with public health and safety. The reviewing Director can approve, deny or condition the permit, and approval is only for specific dates and times. Applications fall into three classes under 16.35.005: Class 0 for minor work valued under $15,000, Class 1 for a single-family residence not part of a larger residential project, and Class 2 for everything else.
If City personnel or equipment must inspect a project outside the hourly limits, 16.35.020 bills the approved applicant at the rate and minimum charges in Subsection 109.2 of the Construction Administrative Code in IMC 16.04.010. A decision on an expanded work hours permit can be appealed to the Hearing Examiner under 16.35.025, and the appeal must reach the Permit Center by 5:00 p.m. on the fourteenth day after the decision issued.
Violations & Fines
Under IMC 16.35.015, each violation tied to an approved expanded work hours permit, of the hourly limit or of the limited approval granted, is enforced under Chapter 8.45 IMC with a fine by application class. First violation: $500 (Class 0), $2,000 (Class 1), $5,000 (Class 2). Second: $1,000, $5,000 or $10,000 plus a Stop Work Order. Third: the same amounts, a Stop Work Order and revocation of the permit. Fines must be paid before a certificate of occupancy or final inspection.
Frequently Asked Questions
Can I run construction work on a Saturday in Issaquah?
Who approves work outside the normal construction hours?
How do I appeal a denied expanded work hours permit?
Does the City's own maintenance work follow these hours?
Sources & Official References
Other rules in Issaquah
Compare Issaquah to another location·View the Washington noise ordinances overview
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Construction Hours in Nearby Cities
How other cities in King County handle construction hours.