Mold Removal in Woodinville, WA

What a 1988 house teaches you

The median Woodinville house was built around 1988, and the median apartment around 2009. Homes from the late 1980s and 1990s often have tighter construction than older Seattle bungalows, which keeps heat in but also keeps moisture in. Common findings in houses of this age:

• Attic sheathing darkened near bath fan ducts that were never run all the way outside.
• Leaks at window corners and deck ledgers where flashing has failed.
• Crawl space vapor barriers that have shifted, letting ground moisture rise into the floor framing.
• Carpeted rooms over crawl spaces that smell musty after long rainy stretches.

Newer apartments are not immune. Tight units with laundry, cooking and showers in a small footprint need working exhaust fans, and condensation on window frames is an early sign that the air is too humid.

The valley and the hills

Woodinville is a Northshore and Eastside city in King County, about 15 miles northeast of Seattle, stretched along SR 522, NE 175th Street and the Woodinville-Duvall and Woodinville-Snohomish roads. The Sammamish River runs through the valley farmland between Redmond and Woodinville. King County says that farmland floods when the river is high and upland stormwater cannot drain, while from Woodinville downstream to Lake Washington the river generally stays in its banks. Properties on the valley floor sit on lower, wetter ground than homes on the surrounding hills, and that difference shows up first in crawl spaces.

City contacts

City of Woodinville Development Services runs permitting through the online Permit Portal. Mold removal itself is not described as permitted work, but replacing structural framing, sheathing or large sections of drywall can be, so check before rebuilding. Development Services also processes and investigates code complaints through the Woodinville Works portal; the city does not describe a separate rental or mold process. Renters should first notify the landlord in writing, as Washington's landlord-tenant law describes. Public Health - Seattle & King County has environmental health specialists who consult on indoor air quality and mold concerns.

When you call

You will be connected with an independent local company that can find the moisture source and quote removal. Washington has no state mold license or certification, so look the company up on L&I's Verify a Contractor tool to confirm its construction contractor registration. EPA's rule of thumb: growth over about 10 square feet is a job for a professional. Ask for the scope in writing, including how the work area will be sealed off from the rest of the house and how the company will confirm the area is dry before anything is closed back up.