Sustainable Luxury Homes Arrive Out East

Brand-new, net-zero and ready to move into this summer.
8 Barnes Ave, East Hampton

With summer quickly approaching, last-minute Hamptons house hunters looking to buy have no shortage of options available. A quick Zillow search yields 764 listings across the Hamptons, ranging from three-bed, two-bath homes at $2 million, to extravagant oceanside mansions reaching $80 million and beyond. But if you want a luxury home and one that’s new construction, the number plummets to a mere 42 listings. If the search criteria includes words such as “sustainable” or better yet, “net zero,” that number, shockingly, decreases to just a handful (six, to be exact). “There is high demand for eco-conscious properties in the region, but virtually no product,” says Bianca D’Alessio, broker at Nest Seekers International.

Enter DeUna Holdings, a distinguished development company specializing in building luxury sustainable single-family estates and eco-friendly spec homes. The company’s inaugural home will be completed and ready for move in next month, and is a contemporary architectural masterpiece boasting seven bedrooms and nine bathrooms, located at 8 Barnes Avenue in East Hampton and priced at $7.5 million. Setting the home apart from the rest is its innovative use of concrete for the home’s primary structure. Unlike conventional stick-built construction, which is widely utilized throughout the Hamptons, concrete frameworks offer unmatched strength, energy efficiency and aesthetics. This eco-minded approach ensures enduring structures and minimizes energy consumption over time. 

8 Barnes Ave, East Hampton

“Clients are praising the materials, innovative approach and meticulous attention to detail,” shares Sara Traverso, a broker at Nest Seekers International representing the 8 Barnes home along with D’Alessio. “We have had great feedback and interest from clients who were exploring other areas of the Hamptons, but this house—where sustainability has been accounted for in every single detail—drew them to the area. You just don’t get that in the Hamptons.” 8 Barnes Avenue is listed by Traverso, D’Alessio and Douglas Sabo of Nest Seekers.

All homes in the collection will utilize concrete, resulting in nearly net-zero homes that are far more energy-efficient than their wood counterparts. The homes will also feature low U-value windows and solar panels as a primary source of energy and are equipped with energy-efficient appliances from Miele. The second home to be complete this summer—located at 1694 Millstone Road in Sag Harbor—has 7 bedrooms, 10 baths, spa, sauna, media and wine room, cathedral ceilings and private tennis court. Currently on the market for $7,850,000, the exceptional property is listed by Jack Richardson of Serhant, and is estimated to have a Certificate of Occupancy by the end of June. A third home, at 9 Blue Jay Way in East Hampton, designed by DXA Studio, is also set for completion in June.

To learn more about DeUna, visit To inquire about 8 Barnes Avenue, visit the listing on To inquire about 1694 Millstone, visit