Washington Statewide Rule
Washington Construction Noise Exemption Statewide
Key Facts
- Exempt window
- 7 a.m. to 10 p.m.
- Authority
- WAC 173-60-050
- Night limits apply
- After 10 p.m.
- Local override
- Cities may restrict further
Summary
Washington's noise code exempts temporary construction sounds during daytime hours from EDNA limits, while night construction still must comply with strict nighttime sound levels.
(3) The following shall be exempt from the provisions of WAC 173-60-040, except insofar as such provisions relate to the reception of noise within Class A EDNAs between the hours of 10:00 p.m. and 7:00 a.m. (a) Sounds originating from temporary construction sites as a result of construction activity.
Full Breakdown
WAC 173-60-050 exempts sounds created by temporary construction activities between 7 a.m. and 10 p.m. on weekdays from the Maximum Environmental Noise Levels. After 10 p.m., construction must comply with the receiving property's nighttime limit. Local jurisdictions in Washington frequently narrow these hours further, but the statewide exemption window applies absent a local ordinance.
Violations & Penalties
Night construction exceeding EDNA limits may incur civil penalties under RCW 70.107.060 of up to $100 per day, plus stop-work orders.
Frequently Asked Questions
Can I run heavy equipment at 6 a.m. anywhere in Washington?
Are weekend construction hours different statewide?
Sources
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.