344 Millstone Brook Road is a newly renovated, expansive Hamptons oasis providing maximum privacy, comfort, and lifestyle. Set on a generous private flag lot at a high elevation, it boasts stunning mature perennial landscaping and meticulously maintained grounds, offering breathtaking natural views and plenty of sky. Fully renovated and flanked by a large equestrian estate and a protected nature preserve, this exceptional property creates a tranquil, protected environment for generations to enjoy. Located in one of the most secluded yet convenient enclaves, it provides easy access to beaches, marinas, golf courses, and villages—all tucked away behind three world-class golf courses and away from the hustle and bustle of village traffic. Boasting an impressive solidly constructed 9,500 square feet of finished living space, this newly renovated bespoke villa features six en-suite bedrooms, three half bathrooms, and an array of graciously proportioned living areas, including multiple guest suites, dining room, living room, family room, screened porch, poolside lounge, billiards room, screening room and more. The chef's kitchen is a culinary masterpiece, complete with three sinks, Wolf, Subzero, and Kalamazoo appliances, butler's pantry, wet-bar, custom white oak cabinetry, and a stunning Tuscan-white waterfall marble island. The dining area features a center fireplace opposite the breakfast area overlooking the breathtaking nature preserve. Step outside into the screened-in porch, where eight operable skylights illuminate the space overlooking the pool where an outdoor kitchen with Kalamazoo BBQ and wine storage await. The terrace offers a picturesque view of the protected forest and glimpses of nearby horse pastures, with access to the sparkling gunite pool and brand-new white stone pool patio. Retreat to the regal primary suite, featuring vaulted ceilings, a large sitting room/home office, double bathrooms and dressing rooms, a steam sauna, power shower, and a deep therapeutic whirlpool tub. Additional luxurious amenities include a salt water hot tub, dry sauna, multiple fireplaces, and seven zones of central air and hydronic radiant floor heat in every room. The connected pool house is a true oasis, complete with a cedar sauna, workout area, and king-size master en-suite bedroom with a poolside lounge and double doors leading to the patio. The finished basement offers ample space for entertainment, with a large screening room, lounge, and billiards area. This gated flag lot is perched atop a hill, offering complete insulation from the outside world with security cameras and custom night lighting. The three-stall heated garage and private motor court comfortably accommodates 16 vehicles. Experience the best of both worlds with this exceptional property, just 90 minutes from Midtown Manhattan, eight minutes to Southampton Village, 10 minutes to Flying Point Beach, and within minutes to Peconic Bay, Bullhead Bay Yacht Club, and three world-class golf courses, including Shinnecock Hills, The National Golf Links of America, and Sebonack Golf Club. Call today for more information or to schedule a private tour.