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  • Root Cause, LLC
    Root Cause, LLC
    206-799-9837
    7490 85th Ave SE, 98040  Mercer Island

    Founded by Brian Holers, ISA certified arborist, and located in Mercer Island, Washington; Root Cause has been serving the Seattle and surrounding area for all your tree preservation and protection needs. From habitat restorations to air excavation, our team is here to help keep your property’s tre…