Post-Remediation Clearance Testing in Mukilteo, WA

Signs you need a clearance check

• Mold was removed from inside a wall, ceiling or floor cavity that is about to be closed.
• The remediation covered more than about 10 square feet, the point where EPA and Washington DOH suggest professional help.
• You are selling, refinancing or filing an insurance claim and need a written record.
• A family member has asthma and you want confirmation the area is clean before reopening it.
• The contractor says the job is done, but you still notice a musty smell.

Mukilteo conditions to keep in mind

Mukilteo is a waterfront bedroom community on bluffs above Possession Sound, about 25 miles north of Seattle, with Port Gardner Bay to the north. Ravines and gulches cut the bluffs along several creeks, Hulk Creek drains to the Sound, and severe erosion closed Mukilteo Lane. Like many Puget Sound hillside houses, homes here may have daylight basements or lower levels set into slopes, where groundwater can seep through foundation walls during the long wet season. Remediation in those spaces fails most often because the water path wasn't fixed, so the clearance visit should include moisture readings at the base of walls and slab edges, not only in the spot that was cleaned.

What the visit costs

Pricing depends on the number of rooms or containment zones, access to crawl spaces and the samples you choose. HomeGuide's 2026 national ranges list air samples at $100 to $300 and surface samples at $50 to $200 each, and Angi's national 2026 figures put a full inspection at $303 to $1,044. Mukilteo prices vary. Build any retest fee into the remediation contract, and follow L&I's advice to pay by completed phase so the last payment follows a written pass.

What happens when you call

You'll be connected with an independent mold inspector who serves Mukilteo. They'll ask what was removed and where, whether containment is still up, and how the moisture problem was solved, then recommend a visual check, samples or both and schedule a time. Once the area passes, rebuilding that needs a permit goes through the City of Mukilteo Permit Center's online portal. Note that Mukilteo Code Compliance says the city does not enforce tenant-landlord disputes, and the Snohomish County Health Department does not test mold or investigate it in private homes.