Once an artists' studio designed by architect Stanford White, this East Hampton house was transformed by builder Jeffrey Collé into a 12,000-square-foot French chateau-style mansion called The Pond House.

First listed in 2009 for $39.5 million, it has been off the market since, and was re-listed last fall for $28.95 million with Laura White and Diane Saatchi of Saunders.

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The house and separate guest cottage are on nearly two acres with 203 feet of direct frontage on Georgica Pond. Only the bones of the 100-year-old studio remain, with the owner rotating the structure 90 degrees and transforming it with a 30-foot high ceiling into the living room overlooking the pond.

Collé renovated and enlarged the structure, adding custom-designed, old-world details, including Louis XV fireplaces, marble from Verona, Italy, in the bathrooms, French limestone in the entry hall and hand-pegged Versailles-patterned parquet floors made from French barn wood.

Outside is an infinity pool and spa and an outdoor grilling area. The 1,800-square-foot guesthouse includes a living room, full kitchen, two bedrooms and a bathroom.