When you’re a grandson of Frank Lloyd Wright and planning to build near Taliesin—Wright’s studio and architecture school near Spring Green, Wisconsin—you have no shortage of design resources. Tim Wright, a documentary filmmaker who teaches at Taliesin, and his wife, Karen Ellzey, managing director for a commercial real estate firm, live in Boston but had a set vision for a flexible second home on a rolling hill seven miles from his grandfather’s estate. After consulting with several architects, they decided that a prefab house would best respect their plan for a flexible home that would sit lightly on the land, and they settled on Blu Homes, a start-up based in Vallejo, California, to execute it. Blu Homes’ steel-framed structures, manufactured in a factory north of San Francisco that once churned out nuclear submarines, fold out on hinges like a pop-up book. Wright and Ellzey chose the Balance model for its flexible floor plan, spacious interior, and modern design. Unlike some other prefabs, it didn’t resemble a "glorified trailer," Wright says, and the company’s energy and drive were a draw. The components were trucked out on two semis in 2012 and assembled in seven and a half weeks. Wright and Ellzey’s house, Blu Homes’ first Midwest project, is a 2,984-square-foot statement in simple living that cost a relatively modest $475,000, including the foundation and the added 1,184-square-foot basement.