Black Mold Removal in Redmond, WA

Is the Sammamish River a mold risk for Redmond homes?

For most houses, not directly. Downtown Redmond sits just north of Lake Sammamish, and the Sammamish River leaves the lake at Marymoor Park and runs north along the west edge of downtown. King County notes that when the river runs high it can limit access to NE 95th Street and low parts of the Sammamish River Trail, and back water up into stormwater facilities; farmland between Redmond and Woodinville floods when upland stormwater can't drain. That backed-up stormwater is the more likely way water reaches a low-lying garage or lower floor. If that has happened at your house, check drywall, carpet and stored items in the affected area.

Why does my 1980s Redmond house have black mold?

Redmond's median home was built around 1984, so many houses on Education Hill, in Overlake and elsewhere are running on original or aging windows, bath fans and roofs. During the long wet season, indoor moisture condenses on cold glass and exterior wall corners, steam lingers in bathrooms with weak fans, and small roof or flashing leaks soak insulation and drywall. Dark growth is often the first visible sign. Clean small spots on hard surfaces, but find and fix the moisture or it returns.

Will the city act on mold in my rental?

Not on mold itself. Redmond Code Enforcement says it doesn't oversee general property maintenance issues such as mold, pests or odors, and acts only when conditions meet the state definition of substandard or dangerous housing under RCW 59.18, after the tenant has notified the landlord in writing. Landlord-tenant disputes are civil matters. Washington landlords must keep units reasonably weathertight and give tenants DOH-approved mold information, so focus your written notice on the leak or moisture. This is general information, not legal advice.

A Redmond note

When you call the number on this page, you're connected with an independent local mold remediation company, not a city office or this website. Rebuilding walls after removal may need permits from the Development Services Center. Washington has no mold license, so confirm the company is registered with Washington L&I as a construction contractor on L&I's Verify tool.