Washington Statewide Rule

Washington Construction Noise Exemption Statewide

Few RestrictionsApplies statewide across Washington (2026)

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.

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

Source: Washington State Legislature

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?

Not under the state exemption, which begins at 7 a.m. Local rules in Seattle, Bellevue, and other cities also typically prohibit pre-7 a.m. construction noise.

Are weekend construction hours different statewide?

WAC 173-60-050 applies the same 7 a.m. to 10 p.m. exemption window every day, though many local ordinances limit Sunday and holiday construction further.

Sources

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Full Breakdown

Frequently Asked Questions

Can I run heavy equipment at 6 a.m. anywhere in Washington?

Not under the state exemption, which begins at 7 a.m. Local rules in Seattle, Bellevue, and other cities also typically prohibit pre-7 a.m. construction noise.

Are weekend construction hours different statewide?

WAC 173-60-050 applies the same 7 a.m. to 10 p.m. exemption window every day, though many local ordinances limit Sunday and holiday construction further.