Basement Mold Removal in Federal Way, WA

What happens when you call

This page connects Federal Way callers with an independent local mold remediation company. It is a referral service, so the company you speak with sets up the visit, does the assessment and gives the quote. Tell them where the mold is, how large an area it covers, what's been wet and for how long, and whether the room is finished. On site they should check the whole lower level and the outside of the foundation, not just the spot you called about, and put the scope, containment plan and price in writing.

What drives the price

Angi's Seattle cost guide reports $425 to $2,475 for basement mold remediation and about $10 to $25 per square foot for most pros. HomeGuide's national 2026 numbers for basements are $1,500 to $6,000 partial and $6,000 to $15,000 full. In practice the bill depends on how much porous material has to go, whether growth reaches inside wall cavities, how hard the space is to seal off from the rest of the house, and whether a separate inspector does a clearance check afterward. Angi recommends using different companies for testing and remediation.

Federal Way conditions

Federal Way, incorporated in 1990, lies between Seattle and Tacoma, about 21 miles south of downtown Seattle along I-5 and Pacific Highway. The city regulates special flood hazard areas under its flood damage prevention code, including coastal V and VE zones, and says most of its hazard area is along the Puget Sound coastline near Dash Point. Inland neighborhoods such as Camelot and East Redondo, and homes near Steel Lake and Lake Killarney, are more likely to see basement moisture from groundwater, poor yard drainage and condensation than from flooding. Flood maps are on file at City Hall. For permits to rebuild after removal, contact the City of Federal Way Permit Center, which is closed to the public on Wednesdays. Code Compliance enforces building codes and the International Property Maintenance Code on a complaint basis.

Checklist before the visit

• Write down when the problem started and any leaks or repairs since.
• Photograph the area and any damaged belongings.
• Run a dehumidifier; EPA suggests keeping humidity below 60 percent.
• Have the company's name ready to check on L&I's Verify a Contractor tool.