Northwood in Oyster Bay is under contract

Northwood has found a buyer. The 26-plus acre Normandy-style estate in Oyster Bay is now under contract. The most recent price for the 10-bedroom, 10-½ bath mansion was $18 million.

The property once belonged to a 900-acre estate owned by banker Mortimer Schiff, who built a 120-room Tudor house on the site. His son John replaced the structure with the current one in 1948. Last year Nassau County purchased 33.5 acres of the estate for $11 million for preservation purposes.

Designer Oleg Cassini, whose clients included Marilyn Monroe and Jackie Kennedy, lived on his nearby estate for many years until his death in 2006.