Perched on a bluff overlooking the water, a house on Long Island’s East End will be a serene year-round retreat. 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.