Mold Testing in Burien, WA

Signs that point to testing

• A room that smells like wet cardboard even though you see no spots.
• Wind-driven rain or wave splash got under siding, doors or windows near the water.
• Peeling paint or a soft spot on a ceiling below a bathroom or flat roof.
• You and your landlord disagree about whether there is a mold problem.

If growth is out in the open, a sample mostly confirms what you already know. The Washington Department of Health says sampling generally isn't needed because mold can usually be seen or smelled.

Local conditions in Burien

Burien has about 5.5 miles of Puget Sound shoreline along its western edge. FEMA maps set base flood elevations for properties next to the Sound, and the city points owners to King County's online flood map. Water does reach homes there: on December 18, 2024, a 12.66-foot high tide combined with strong wind sent waves over waterfront properties at Three Tree Point, covering SW 172nd Street with water and debris. Saltwater that soaks into wall cavities or crawl spaces dries slowly in a Puget Sound winter.

Inland, the bigger driver is the long wet season itself: closed windows, condensation on cold glass, and bathrooms that never fully dry.

Renters in apartments, duplexes, triplexes and four-plexes are covered by Burien's Rental Housing Inspection Program, which inspects those units for health and safety every three years. Tenants first give the landlord written notice of the problem; if the landlord doesn't respond, they can contact City of Burien officials. Public Health - Seattle & King County does not do mold assessments, and it tells tenants to report the unfixed water or maintenance problem to local building or code officials. General information, not legal advice.

What affects cost

Per Angi's 2026 national data, air testing runs $250 to $350 for a basic visit and up to $700 for extensive work. HomeGuide's 2026 national figures list surface samples at $50 to $200 each. The final price depends on how many samples you need, the size of the home, and whether a written report is included.

What happens when you call

We connect you with an independent local inspector or mold company; we are not a mold company ourselves. Mention any storm or tide water, the rooms that smell, and whether you rent. Ask the tester to explain what each sample will show. Washington has no state mold license, so ask about training and whether the company also sells removal.