Set on over 3 acres, this unique new construction compound affords three separate structures and includes multiple pre-existing grandfathered elements, differentiating the opportunity from anything else available. With the design and build process spanning close to a decade and containing over 5 living areas, the project came to fruition through the collaboration of a team of renowned architects and designers, including Oza Sabbeth Architects, Santorelli Builders, and Vesta Home. Boasting over 23,000 +/- square feet total, this exceptional architectural gem showcases classic Hamptons' elegance perfectly juxtaposed with the ultimate in modern interiors and amenities. With over 19,000 square feet, the main residence is introduced by an entry foyer leading to a majestic great room with soaring ceilings featuring a double-sided Galvalume Steel Cladded fireplace designed by local Sagaponack artist, Nathan Slate Joseph and floor-to-ceiling windows showcasing unobstructed reserve views. The luxurious living room seamlessly transitions into a formal dining area with seating for ten and its own wet bar. The main level hosts a gourmet dine-in kitchen, open to a relaxed seating area, and offers stainless steel Boffi cabinets with a multitude of high-end appliances. The first floor is completed by an enclosed wine room, junior suite, office, and two powder rooms. Encompassing the northern wing of the main residence, the second floor primary suite features two full bathrooms with Polish glass tile floors and full custom marble slabs on the bath and shower walls, massage room, two walk-in closets, a private office/sitting room, and a private balcony. Joining the primary suite on the second floor are three ensuite bedrooms each with access to a separate balcony, two sitting rooms, laundry room, and guest quarters comprised of two ensuite bedrooms and an office which share an eastern-facing deck. Offering total home optimization, the home is powered by a Lutron lighting system and motorized shades, Sonos music system, Nest Thermostat, alarm system and surveillance cameras. An elevator connects all three levels, from the second floor down to the finished lower level which has been fully outfitted for entertaining. A recreational room with pool table provides access to an outdoor dining area and is joined by an ensuite bedroom. With no expense spared, this floor affords a 10-seat movie theater, glam room and neighboring salt room for halotherapy. Two ensuite bedrooms are ideally positioned near the lower level kitchen and secondary staircase, which leads up to the main floor gym. Set outside the main living area is a patio with outdoor fire pit capable of seating 30 people and accentuated by the complete exterior lighting package. Surrounded by a Madras patio, the 60' x 25' heated salt water gunite pool with 12' x 8' spa offers ample space for poolside relaxation and the professional-sized sunken Har-Tru tennis court is equipped with a hydro underground system and custom storage units. The separate two-story guest house offers 1,300 +/- sq. ft. with two legal bedrooms and additional storage below. The first floor of the guest house features a living area with ensuite bedroom while the second floor presents a dining area, kitchen, and second bedroom with bathroom. Built in 1884 and completely refurbished to preserve its historical value, the School House stands at over 1,800 +/- sq. ft. and offers numerous uses. Originally designed by New York architect Henry M. Congdon, the School House operated until 1930.Inside the refurbished structure is an expansive living area, kitchen, full bathroom and additional storage below. Presenting western facing views over reserve, the Sagaponack South new construction estate is unparalleled in location, scale, and amenities. This opportunity is the total expression of resort-style living, postured flawlessly for intimate private enjoyment and to host sophisticated soirees and grand events.