Black Mold Removal in Tacoma, WA

Common signs

• Speckled black growth on window sills, frames and the paint beneath them.
• Dark patches on bathroom ceilings or around the tub.
• Staining or a damp smell in a basement, especially along the bottom of walls.
• Spots on top-floor ceilings near exterior walls, often from roof or attic moisture.
• Peeling paint, soft drywall or warped trim near the growth.

Tacoma conditions that feed mold

Tacoma straddles Commencement Bay, with the Thea Foss Waterway and the Puyallup River running through it. The city's comprehensive plan expects greater flood risk on the Puyallup River and identifies the West End, North End and Tideflats as more exposed to coastal flooding and sea level rise than inland neighborhoods. Most dark mold in Tacoma homes, though, comes from everyday water: roofs and gutters that fail in a long wet winter, plumbing leaks, and bathrooms and bedrooms where moisture condenses with no way out. The Tacoma-Pierce County Health Department's guidance is direct: molds grow where there is too much water, so stop leaks, repair roofs and plumbing, and move water away from basement walls and slabs.

What affects the cost

Angi's Seattle cost guide puts typical mold remediation at $1,008 to $2,967. By area, it lists basements at $425 to $2,475 and attics at $825 to $3,300. HomeGuide's 2026 national range is $1,500 to $6,000. Cost rises with the size of the area, how much drywall or insulation comes out, containment, access and the repairs that follow. A black color doesn't add to the bill.

What happens when you call

You'll be connected with an independent local mold remediation company serving Tacoma. They'll ask where the growth is and whether there's an active leak, then usually schedule a visit with moisture readings. Washington has no state mold license, so ask for the company's registration with Washington L&I as a construction contractor and check it on L&I's Verify tool. Permits for drywall or structural repairs after removal go through the City of Tacoma Permit Center.

Tacoma renters should first notify the landlord in writing. If repairs aren't made, the city's Rental Housing Code complaint process takes complaints through TacomaFirst 311, and Code Compliance inspects building conditions such as leaking roofs.