Perched on a bluff overlooking the water, a house on Long Island’s East End is a serene year-round retreat. Designed to provide perpetual connections to the natural landscape, living spaces open outward toward cool breezes and lapping waves in summer, and in winter orient inwards toward warm wood paneling and a cozy two-sided fireplace. A familiar regional palette of red cedar, copper, and bluestone belie sophisticated passive house strategies including a continuously insulated envelope and energy-recovery ventilation, while a green roof provides both visual reward and environmental benefit.