A sun room with gas fireplace and bar area is situated right off the kitchen, providing a bonus space for entertaining. The main level is completed with a powder room and two ensuite bedrooms, including a junior master suite with walk-in closet. An expansive mahogany sun deck transitions you outside to the al fresco dining and lounging spaces, featuring a built-in gas grill and overlooking the spacious backyard, complete with a 20×40 saltwater gunite pool with spa and outdoor shower. The second floor showcases the master suite which is set privately at one end of the house, with a spacious walk-in closet, large private mahogany terrace and a spa-like master bathroom with a glass enclosed shower, soaking tub and double vanities. In addition, there are three large en-suite bedrooms, a full laundry room, and a large shared terrace space. The lower level has three additional bedroom suites for weekend guests, as well as a large media room, gym area, bar/snack storage, laundry room and storage closets. A detached 2-car garage rounds out the property. The buyer has the option to add a tennis court and a pool house with bathroom and bar for additional costs. This modern masterpiece is sited down a long flag lot, on nearly 3 acres of lushly landscaped property which expertly optimizes the southern exposure and creates total quiet & seclusion. Just a short drive to both East Hampton and Sag Harbor villages, allowing you access to world-class ocean/bay beaches and amenities. This cutting-edge Net Zero design employs geothermal heat, solar energy, efficient mechanical system and passive solar radically reducing your operating costs without any sacrifice in comfort, saving approximately $25k/year in operating costs. Combine this with the estimated $40k savings in year 1 federal tax credits and the 5-year savings becomes more than $165k. The energy you create is equal to the energy you consume. The only evidence of your time spent at this one-of-a-kind home will be the wonderful memories you create. Approved by Mother Nature.