On a coveted south of the highway lane in Water Mill overlooking reserve, a short distance from world class ocean beaches and several of the finest farm stands in the Hamptons, this newly constructed 8-bedroom, 12-bath (3 partial) shingled transitional by the eminent Michael Frank Building features exceptional outdoor spaces surrounding a heated, gunite pool and spa as well as a dazzling finished lower level with gym, theater, and wellness spa. On the border of Water Mill and Bridgehampton south, Summerfield Lane is tucked away between 25+/- acres of agricultural reserve, for sunset views across farm fields, and several horse farms that exemplify Bridgehampton's bucolic charms by the sea. Behind the manicured wall of arborvitae, the beautiful white shingled traditional with cedar shingle roof and standing seam metal accent roof is ensconced in a privacy hedge. The traditional exterior gives way to clean, modern interiors with J bead trim shadow gaps and a general dearth of trim that showcases the precision craftsmanship required for transitional minimalist detail. A soaring double height entry foyer leads to the open concept great room dining area, and gourmet kitchen with walls of glass opening to the idyllic summer outdoor spaces, a covered porch with fireplace and a built-in BBQ grill kitchen with stacked stone facade. The gourmet eat-in kitchen offers top of the line appliances with oversized refrigerators, full sized wine refrigerator, dual range and wall mounted ovens, dual dishwashers, dual sinks, and finished with handsome, black hardware. A formal dining room with paneled ceiling and wine room supplements expansive kitchen's eat-in counter and breakfast area. The separate living room opens to the covered porch. The main level contains a junior primary suite with a luxurious bath and an office. The 3-car attached garage, mud room with bench and cubbies, laundry room, and two powder baths, one serving the pool area and one off the foyer, complete the main level. A luxurious elevator provides easy access to all three floors of exceptionally finished space. Upstairs features four generous en suite guest bedrooms, laundry room, and the primary suite with fireplace, office, and luxurious bath, which occupies the entirety of the east wing. The primary bath has a freestanding tub, dual vanity, spacious shower with bench, and separate commode behind frosted glass. The finished lower level has a spacious recreation area with stylish wood-paneled tray ceiling, gym, theater media room, wellness spa with steam room and infrared sauna, and two en suite bedrooms. Room for and permit in place for a pickleball court. An exemplary new construction south of the highway estate with all the quintessential amenities for summer in the Hamptons and abutting agricultural reserve for all day sun on the pool and magical western exposure sunsets.