140 Hayground Cove Road is a newly constructed 12,900 SFA± waterfront estate blending Japanese Teahouse serenity with Brazilian Modern design. Set on 2.8 acresA± with 175'A± of frontage on Hayground Cove and a 2.2-acreA± private reserve, the home offers breathtaking western-facing views. Designed by Gabellini Sheppard and Joshua Gurwitz, it features Alvio floor-to-ceiling windows, Henrybuilt millwork, and high-end materials like Arrigono Oak and Tundra Honed Marble. The first level boasts a 27' ceiling living room, chef's kitchen with Gaggenau appliances, and seamless indoor-outdoor spaces. The second level includes a grand primary suite with dual marble baths and a private terrace, a junior suite, and four additional en-suite bedrooms. Outdoor amenities include a 20' x 50' heated saline gunite pool, an 8' x 18' spa, a sunken firepit lounge, a private dock with access to Mecox Bay, and a 60' x 120' Har-Tru tennis court. A gated driveway and custom entry pond create a dramatic arrival. Developed by Joshua Gurwitz with Gabellini Sheppard, Cooley Monato Studio, Realm, Henrybuilt, and Summerhill Landscapes, this estate is the pinnacle of sustainable waterfront luxury in the Hamptons.