Basement Mold Removal in Kenmore, WA

What happens when you call

A call from this page reaches an independent mold remediation company serving Kenmore and the Northshore. This site only makes the connection. Have a few details ready: where the growth or smell is, whether the space is finished, what got wet and whether the source is fixed. A proper visit covers the full lower level with a moisture meter, the laundry and water heater area, any ductwork and the outside grading and gutters, followed by a written scope you can compare with other bids.

Cost factors

• Angi's Seattle cost guide: $425 to $2,475 for basement mold work, and $10 to $25 per square foot for most pros.
• HomeGuide 2026 national ranges: $1,500 to $6,000 for a partial basement, $6,000 to $15,000 for a full one.
• Finished rooms with drywall, insulation and carpet cost more than bare concrete and framing.
• Rebuild costs are separate; Angi's Seattle page lists flooring repairs at $175 to $450 and carpet at $650 to $2,150.
• Tight spaces and containment add labor, which Angi's Seattle page puts at $75 to $120 an hour.

Kenmore conditions

Kenmore is about 10 miles northeast of Seattle, where the Sammamish River empties into Lake Washington. King County says the river generally stays within its banks from Woodinville down to the lake, so most basement moisture here comes from rain and groundwater rather than river floods. Neighborhoods like Arrowhead, Inglewood, Linwood Heights and Kenlake Vista climb the hills above the lake, and a house cut into a slope tends to take groundwater on its uphill wall through the rainy months. Winter adds condensation on cold concrete, especially where laundry is dried indoors. For repairs that need permits, contact the City of Kenmore Development Services team, which includes permit coordinators and building inspectors.

Before they arrive

• Move stored items away from damp walls.
• Don't scrub large patches yourself; EPA puts the do-it-yourself limit at about 10 square feet.
• Note whether the musty smell reaches upstairs, which can mean basement air is moving through the house.
• Look up the company's contractor registration on L&I's Verify a Contractor tool.
• Keep anyone with asthma or a weakened immune system out of the lower level.