Mold in Walls & Drywall in Tukwila, WA

Most homes here are rentals. Who deals with mold in a rental wall?

Census figures put Tukwila's owner-occupied rate at about 40 percent, so most households rent. Washington landlords must keep units weathertight and keep walls and plumbing in reasonable repair, and they must give tenants approved information about mold. Tell the landlord in writing about the leak or damp wall. Tukwila also runs a Rental Housing Licensing Program through the Permit Center ((206) 431-3674): rentals need an annual license and an inspection before first occupancy and every four years, and tenants with concerns about living conditions can ask the program for a courtesy City inspection. The program's page also links to mold resources for tenants and owners. This is general information, not legal advice.

Did the 2025 Green River levee breach affect walls?

For some properties, yes. The Desimone Levee on the Green River in Tukwila breached on December 15, 2025 during repeated atmospheric river storms, and a GO NOW evacuation covered the part of the city south of S 180th Street and west of West Valley Highway, a mostly industrial and business area. Any building where floodwater reached the walls should be treated as a flood cleanup. EPA says to assume mold if the building could not be dried within 24 to 48 hours, and soaked drywall and insulation are generally removed rather than dried in place.

What does opening and rebuilding a wall involve?

A company maps moisture first, then seals off the area and cuts drywall beyond the damage. Insulation comes out, studs and sheathing are cleaned, and the cavity dries before new materials go in. Angi's Seattle cost guide lists about $825 to $16,550 for wall mold, depending on how much wall is opened, and $825 to $2,400 for new drywall afterward. If framing, plumbing or electrical repairs are needed, the City of Tukwila Permit Center at 6300 Southcenter Blvd. issues construction permits.

Local note

Tukwila sits along the Green and Duwamish rivers, and King County runs a flood warning system that covers the Green-Duwamish watershed. Signing up for those alerts gives property owners time to move belongings off the floor and away from walls when water is rising.