Swan Manor, a sprawling and furnished Gilded Age mansion located on the Gold Coast of Long Island, owned by inventor and entrepreneur Joy Mangano, will sell at auction next month. Designed by famed architect Stanford White, the Nissequogue, New York property spans 22,000 square feet across nine acres with picturesque views overlooking the Long Island Sound. Originally listed for $20 million, it will sell in cooperation with Kyle Roskot of The Agency. Starting bids are expected between $4 million and $7 million. The auction is scheduled to open 22 July on our marketplace and culminate on 25 July. 

Mangano—founder of the self-wringing and industry-changing Miracle Mop, and the founder and CEO of CleanBoss, a company that develops and sells revolutionary cleaning products—has lived in the home since 2000. 

“My entire life has been devoted to saving people time with the invention of my products. Deciding to sell my home through a luxury auction is very exciting to me. I love that an auction can help condense the timeframe and reach more incredible people throughout the world who can discover this one-of-a-kind property,” said Mangano, the inspiration behind both the movie Joy starring Jennifer Lawrence and the new off-Broadway play, Joy: A New Musical. “This is a beautiful home with so much history. I’m excited by the prospect of a new family having the opportunity to breathe new life throughout the estate and make it their own.”

“The beauty of this auction and this incredible turnkey property is that the new owner will be able to enjoy it the day they close,” said Chad Roffers, CEO of Concierge Auctions. “Our auction platform is ideal for savvy businesswomen, like Joy, who knows what she wants and is willing to act fast to make it happen. We accelerate what can often take years and deliver both a sale and the gift of time to our clients.”

This auction marks the first time Concierge Auctions has partnered with The Agency in Long Island after multiple successes nationwide, including the sale of a prominent Beverly Hills, California home whose auction sale was featured in The Agency’s Netflix reality show, Buying Beverly Hills. 

“This auction marks a truly unique moment for buyers to compete for one of Long Island’s most remarkable Gilded Age estates. Designed by renowned architect Stanford White and meticulously reimagined by iconic inventor Joy Mangano, the home blends grandeur and intimacy across over 22,000 square feet,” said Mauricio Umansky, co-founder and CEO of The Agency. “Offering it at auction ensures broad exposure and a dynamic, transparent sale process—one that does justice to the estate’s historic significance and modern luxury.”

Beyond its historic appeal, Swan Manor—located at One Swan Place—was designed for both grand entertaining and resort-style living by White, one of the most significant architects at the turn of the 20th century, whose design principles embody the ‘American Renaissance’. He designed many luxury homes in addition to numerous civic, institutional, and religious buildings. 

Spread across three residences, the property’s 22,000 square feet features 14 bedrooms and 14 and a half bathrooms. The main home spans 17,790 square feet and includes a grand two-story great room, a sunroom, and expansive kitchen. An old barn on the property was converted into a separate three-bedroom guest house, and a four-car detached garage includes an additional living area and two bedrooms above that would have served as the staff quarters when the estate was first built. 

The estate has no shortage of amenities for both owners and guests to enjoy, including a large indoor swimming pool, fully equipped gym, massage room and sauna, Prohibition-era inspired bar, and wine cellar with its own tasting room. Outside, the grounds are designed for both leisure and recreation with newly updated tennis courts, manicured landscaped gardens with a stone waterfall, and numerous patios and furnished spaces for lounging. 

Swan Manor is located in the village of Nissequogue, about 60 miles from New York City on the Gold Coast of Long Island. Named for the nearby Nissequogue River, the village features many private estates dating from the Gilded Age. Residents of Nissequogue enjoy the area’s tranquility, preserved history, rolling hills, and access to outdoor recreation on the river with easy train access to Manhattan, the Hamptons, multiple golf courses, country clubs, and more.