Twelve-inch walls under a standing-seam metal roof, European tilt-and-turn windows, and an owner-owned solar array — Horn Builders engineered this one before anyone decorated it. The kitchen runs birdseye maple cabinetry, soapstone counters and a Bosch induction cooktop. Wood floors throughout, a first-floor primary under vaulted ceilings, and six acres holding a screened pool and a private pond.