Mold & Mildew Cleanup in Kent, WA

Why does mildew keep coming back in my Kent house?

For most homes on East Hill, West Hill and around Lake Meridian, the answer is indoor moisture during the long wet season. Kent sits about 17 miles south of Seattle, and from October to April the weather stays cool and gray. Windows stay shut, and moisture from showers, cooking and drying laundry condenses on cold glass, bathroom ceilings and outside walls. Mildew that returns within weeks of cleaning usually means that moisture never leaves: a bath fan that is too weak or not used, furniture pressed against a cold wall, or a closet with no air movement. Cleaning the spots treats the symptom. Running fans, keeping heat steady and holding indoor humidity under 60 percent, as EPA advises, treats the cause.

What about homes that took on water in December 2025?

The Green River flows north through Kent, and flooding from it and the White River was a constant problem in the valley until Howard A. Hanson Dam was built at Eagle Gorge in 1962. King County still says the lower Green, including Kent, is at risk of flooding, and that the levee system and the dam can't prevent all of it. In December 2025, after a week of heavy rain and a levee failure, King County ordered evacuations in parts of Kent, Auburn and Tukwila, and the Army Corps stored a record amount of water behind Hanson Dam to protect the valley. Where water reached a home, EPA says to assume mold is growing if things couldn't be dried within 24 to 48 hours. Soaked drywall, insulation and carpet generally come out; hard surfaces can be cleaned and dried.

When should I stop cleaning it myself?

EPA and Washington DOH both draw the line at about 10 square feet. Past that, or when the growth is on soft drywall, inside a wall, or the result of floodwater, a professional should handle it. Angi's Seattle cost guide lists bathroom mold remediation at $425 to $825 and says most pros charge $10 to $25 a square foot.

A note for Kent residents

Kent's valley floor is mainly industrial and commercial with some medium-density housing, while East Hill is mostly homes. If cleanup leads to new drywall or framing, check with the City of Kent about permits before rebuilding. Public Health - Seattle & King County offers indoor air quality and mold consultations if you have questions.