Geoff Gehman has a question for you. When was the last time you rode a bike through Wainscott without a giant S.U.V. over your shoulder?
It may be an exemplar of modern architecture, but the house that the architect Blaze Makoid built for his family sneaks up on you. Tall and angular like its designer, the 2,900-square-foot building, on a Sag Harbor hillock, blends in with a profusion of greenery, in part because its exterior cedar is stained black. Its size comes as a surprise because it has a ziggurat layout, starting at the street as a two-story house and expanding to three as it progresses down a 14-foot slope toward Upper Sag Harbor Cove.