I've done quite a few of these "MCM" homes on Mercer Island and nearby. All well built and easily maintained, with lots of mature landscaping, Here's a link showing one of my best MCM Custom homes- on Lake Sawyer, just South of Seattle. The client (now widowed) and I stay in close touch via eMail. JG-
http://jgknols.wordpress.com/article/a-mid-century-modern-home-on-lovely-246qxuxd260sm-38/