Hamptons developer Joe Farrell has found a renter for his famed property, nicknamed Sandcastle.

It was on the market for $2 million from March until Labor Day, as we previously reported — making it the most expensive East End rental ever.

Farrell tells Gimme Shelter the Bridgehampton mansion rented for close to its asking price “to a textile tycoon and his family who were stuck in Manhattan and wanted to leave the city on a day’s notice. This was a COVID situation — not a normal summer rental.”

The 11-bedroom spread — which has hosted guests like Justin Bieber, Beyoncé and Jay-Z — rented in just one day.

That meant Farrell moved out of it in a “day and a half.” He’s now in his new home — “a sick flat-roof modern” by the beach, at 51 Sandpiper Lane.

It has a hot tub, outdoor kitchen and golf course on the roof. He’s selling another flat-roof modern home near his, at 65 Sandpiper Lane, for $15 million. That home is also available as a $700,000 rental from now until Labor Day.

Farrell says he only has around “three or four” Hamptons homes for rent, available immediately, and will have about seven more available for rent this June or July “due to existing leases in place.”

Prices range anywhere from $65,000 to $700,000 from now until Labor Day.

The rentals are flying fast in part because the homes are already furnished — several homes were rented in a day by families from the city moving in the following day, he adds. Farrell also says he has been flying potential clients out of the city on his company’s five-seat helicopter as a courtesy.

He even sent his company’s jet to Barbados to pick up clients’ kids who were stranded during spring break. “It saved the kids having to wait in eight-hour-long lines [that did not follow social distancing rules] at JFK in customs,” Farrell said.

And once his clients rent or buy his homes, they have even hitched rides on his chopper back and forth from the East End to the city if they need to.

“We even shuttle them in and out of the city if they have to be there,” Farrell tells Gimme Shelter.