Mold remediation cost in Washington

We publish modeled mold-remediation cost estimates for metro areas across Washington, built from NOAA climate normals, US Census housing data and BLS wages. Pick a metro for its local cost ranges, moisture profile and housing breakdown.

METROSWashington metros we cover

One metro is live, with more publishing soon.

Seattle, WA$4,305midpoint

RULES & OVERSIGHTMold regulation in Washington

Washington does not license mold assessors or remediators field-verified

Licenses assessors
No
Licenses remediators
No
Assessor–remediator independence
Not required
Mold disclosure law
None

Washington states that there are no specific certification requirements for mold/water-damage restoration. General construction contractors are subject to statewide contractor registration, which can apply to rebuild work.

Source: Washington State Department of Health / Department of Labor and Industries — doh.wa.gov/community-and-environment/air-quality/indoor-air/hiring-contractor

How we estimate these costs

Every figure is modeled from public data and a documented cost model — not a national average with a markup. See the method behind the numbers.

Read the methodology