Lower Kennydale is situated on land which slopes from I-405 to a shoreline on Lake Washington that forms a westward bulge terminating at Coleman Point.
Kennydale was one of many communities laid out in the Seattle area between 1898 and 1910 by real estate developer Clarence Dayton Hillman (1870–1935).
Hillman would typically buy large tracts of land cleared by logging and sell it as lots.
Kennydale was one of his first land developments and was started in 1898 as the "Lake Washington Garden of Eden".
The sale of the land was finalized in September 2006 and construction began on the development of the community of 114 luxury townhouses by longtime Eastside builder, Conner Homes Co.[3] On May 7, 2006, the Seattle Seahawks of the National Football League announced plans to construct a new team headquarters and training facility on land already owned by team owner Paul Allen in the Kennydale neighborhood on a parcel of land near the former Barbee Mill along Lake Washington.