Situated on a secluded lot in Quogue and offering views of the bay from its rooftop terrace, this new modern house is composed of a series of stacked rectangular volumes that loosely form an L-shape. Clad in tongue-and-groove horizontal cedar and punctuated by square and rectangular windows, the house features multiple glass doors on the ground level that slide into the wall. All public spaces — living room, dining room, family room and kitchen — flow seamlessly onto the ipe wood terrace and lap pool. Above are three bedrooms, the library and a second-floor roof garden, all of which provide access to the rooftop terrace. Ground source heat pumps, an extremely well insulated envelope, and solar panels are some of the elements that provide this 3,400 square-foot house with sustainable and efficient energy.