Interesting perspective on the development of Mercer Island housing styles from the Greater Seattle Homes blog:
The first floating bridge to provide a real path to the eastside was built across Lake Washington in 1940, about where I-90 is today, and development of Mercer Island and Bellevue commenced. From a housing point of view, most of the housing on the Seattle side of Lake Washington is at least 50 years old, built in the styles of those times, usually with nice formal rooms like living room and dining room, tending toward pretty utilitarian kitchens and baths, and often with a basement – usually finished out and incorporated into the living space by now.
Map for showing the housing development waves for the Greater Seattle area
Development on Mercer Island and Bellevue, including Medina and Clyde Hill, and Kirkland proceeded pretty rapidly during the 50’s and 60’s, and the typical housing style was a rambler, or a ‘daylight rambler’ on a hillside, and basements were uncommon in that era.
Housing styles changed rapidly in the 70’s with the popularity of natural wood (usually cedar), exposed beams, and big windows – perhaps influenced by the spectacular house in the great 1959 thriller film North by Northwest with Cary Grant, Eva Marie Saint and James Mason.
The other major housing style to emerge on the eastside in the 70’s was the tri-level, a new design with the entry at mid-level, and living spaces either a half-flight up or a half flight down. Another common design during this period was the tri-level, a very livable and still popular design for sloping lots.
North by Northwest house image credit: Dailyicon.net