Exclusive | A partially built oceanfront mansion on one of the Hamptons’ most prestigious streets finally finds a buyer

A partially built 19,980 sq ft mansion on Meadow Lane in Southampton, left derelict since 2018, has found a buyer, The Post has learned.

The sprawling property — the largest oceanfront lot on Meadow Lane, which was once listed for $85 million — has gone into contract after a series of dramatic price cuts, most recently settling at $49.5 million.

The final sale price remains unknown, as does the identity of the deep-pocketed future owner, who has the choice to complete its Moroccan-inspired construction, collaborate on conceptual designs — or demolish the structure entirely.

Bespoke Real Estate shared the listing for 1320 Meadow Lane in a co-exclusive with Corcoran’s Tim Davis — all of whom declined to comment on the deal. Custom, the sources said, also represented the buyer.

The 9.75-acre parcel, located right on the Atlantic Ocean, is owned by Meadowcore LLC, according to property records.

The unfinished two-story structure features arched windows and doorways, a flat roof with pyramidal and conical peaks, plus a sandstone facade. Despite his bold inspiration, progress on the mansion languished for years, its construction halted and its future uncertain.

The property includes tennis courts, a 1,700-square-foot pool and zoning that allows for single-family use.

The lot itself is a rare gem in the Hamptons, offering 550 feet of Atlantic Ocean frontage and Bayfront access via Meadow Lane.

The potential is undeniable, with the listing describing it as a “once-in-a-lifetime” opportunity to create an exceptional complex with Atlantic views. The land alone cost the current owner more than $37 million in 2007, records show, with an additional $19 million said to be earmarked for construction.

But Meadowcore LLC, allegedly linked to billionaire defense financier Thomas E. Sandell, eventually walked away from their vision for the fortune. Sandell’s name appears on several building department documents before being crossed out and replaced with LLC. According to Forbes, Sandell is worth $1.2 billion.

Had the home been completed, the asking price would have been more than $150 million, Davis first said when he took over the listing for the property in 2022.

Since then, there has been a steady erosion of the asking price. From the original asking price of $85 million in 2021, the mansion’s price dropped to $75 million. From that point, it then dropped to $67 million and most recently to $49.5 million before entering into a contract, according to appraiser Jonathan Miller of Miller Samuel.

The unfinished home, which currently offers up to 10 bedrooms, 10 full bathrooms and three half bathrooms, leaves a lot to the imagination. Renderings, as seen in marketing materials, suggest a sleek, modern transformation could replace the incomplete structure.

The listing calls the property a “developed parcel” located in the “sweet spot” of Meadow Lane. It highlights its privacy, sweeping ocean views and proximity to Southampton village centre.

Meadow Lane, in all, is home to around 100 homes – more than half of them brag-worthy mansions – as well as billionaires. (Hence its “Billionaire Lane” moniker.) Hedge fund titan Ken Griffin bought Calvin Klein’s roughly 7-acre property there for $84.44 million in 2020 in an off-market deal. The following year, billionaire New England Patriots owner Robert Kraft spent about $43 million on a Meadow Lane mansion, also in an off-market transaction.