Welcome to this stunning new construction exceptionally designed with a warm and inviting ambiance. Offering an impressive 4,435sf of finished living area, this home is flooded with natural light and just South of the Village of Old Greenwich. Your first impression of this home is the covered front porch, an ideal spot to unwind and enjoy the idyllic OG lifestyle. As you go inside, you will be wowed by the sophisticated coastal charm and unique design elements such as the elegant millwork and natural walnut and shiplap accented walls. Your days can be spent in the sun-filled office overlooking the front porch and your evenings with friends and family in front of the the wood-burning fireplace. The kitchen is a true chef's dream, featuring top-of-the-line Sub Zero and Wolf appliances, a large center island, informal dining area, bookmatched Unique Calcutta quartz countertops and custom cabinetry designed by award winner Karen Berkemeyer. One of the distinctive features of the kitchen is the walk-in pantry, providing ample and easily accessible storage space. Also included is a built in bar and wine cooler. The open concept of the first floor allows for a seamless flow from the kitchen into the living room, dining room and outdoor bluestone patio via the double sliding doors. The level yard is professionally landscaped with possible pool site. (Upstairs, indulge in the primary suite's luxurious spa bathroom including soaking tub plus an expansive walk-in closet. There is a proper laundry room, 3 additional bedrooms and 2 baths, providing plenty of living space for family and guests. The 511sf bonus room on the 3rd level is ideal for a playroom or office. The versatile lower level is designed to cater to your lifestyle needs. Whether you prefer a fitness room, game room or home theater, this flexible finished space has you covered. The additional bedroom and full bath is perfectly suited for an au-pair suite. 21 Park Ave is designed and built for the tech-savvy owner. The house includes CAT5/6 wiring, is energy efficient and equipped with a whole house audiovisual system. With a 22kW generator and top-of-the line security system gives you a lock and go option with total peace of mind. This home strikes the perfect balance between modern amenities and warmth, sure to impress the most discerning homeowner.