Is it a good sign or a bad one for real estate that all these spiffy homes are for sale? And what does it say about high-end, name-checking architecture? Most recently, we noted a notable Eric Owen Moss home up for sale, and now our good friend and frequent contributor Alexandra Lange notified us (how else—via Twitter) that the stunning YN-13 House designed by Morris-Sato Studio, which she highlighted in her summer homes feature last year, is now up for sale. At the time, she wrote, “the one thing the YN-13 House is not is a cookie-cutter, shingles-on-steroids McMansion.” Corcoran, in its listing for the Shelter Island stead, puts it this way: “Inspired by the historic homes of Kyoto, Japan, this unique architecturally designed residence combines artful living with uncommon functionality. The clean lines and meticulous detailing and construction throughout infuse the light filled spacious home with remarkable serenity and grace.” They’re currently asking $4.195 million.