Osborne Bay Resort · New Residential Resort on beautiful Banks Lake, Washington OsborneBay.com - Osborne Bay Resort is a proposed development project in Grant County, Washington that will consist of approximately 600 hundred homes with convenient proximity to Seattle, Portland, Spokane, and the Tri-Cities. The resort offers incredible recreational opportunities, in a gorgeous naturally refined lake setting on scenic Banks Lake. Osbornebay.com~Site InfoWhoisTrace RouteRBL Check