Commercial Mold Remediation in Kent, WA

Does Green River flooding still matter for Kent businesses?

Yes. Flooding from the Green and White rivers was a constant problem on the valley floor until Howard A. Hanson Dam was built at Eagle Gorge in 1962. King County still describes the lower Green, including Kent, as at risk of flooding in residential, commercial and industrial areas, with a levee and revetment system that reduces but cannot remove the risk. In December 2025 the Army Corps stored a record amount of water behind Hanson Dam during back-to-back atmospheric rivers, and after a levee failed, King County ordered evacuations in parts of Kent, Auburn and Tukwila. Warehouses, flex space and ground-floor offices that took on seepage or groundwater then may still have wet drywall and insulation inside the walls.

What is different about mold in a warehouse or office?

Scale and shared systems. EPA's guide for schools and commercial buildings scales containment and protective gear to the size of the area, with stronger measures above 100 square feet. It also warns against running an HVAC system that may be contaminated. In tilt-up and flex buildings, office build-outs often sit against exterior walls where condensation and roof leaks collect, while open warehouse areas with concrete floors and metal racking usually clean up rather than come out. Stored cardboard, pallets and paper records may need to be discarded.

What should Kent apartment owners plan for?

East Hill is mainly residential with retail, and West Hill mixes housing and commercial along I-5. In multifamily buildings, a leak in one unit often reaches neighbors through shared walls and ceilings. Plan to notify affected tenants, phase the work so most units stay occupied, and keep records. Washington landlords must keep units weathertight, provide DOH-approved mold information and begin most repairs within 10 days of written notice.

A local note

Kent sits about 17 miles south of Seattle around SR 167, SR 516 and I-5, with Lake Meridian, Clark Lake and Lake Fenwick on the plateaus. Ask the City of Kent about permits before replacing walls or repairing plumbing and electrical systems. Washington has no state mold license, so confirm the remediation company is registered with L&I as a construction contractor.