An Undiluted Pedigree in the Hamptons Kathy Kmonicek for The New York Times A historic property adjoining a windmill has two homes and was in one family for more than three centuries. A pastoral and historic 3.7-acre piece of prime residential and agricultural property on James Lane near Town Pond, the idyllic gateway to the Village of East Hampton, is about to enter the market for the first time in more than three centuries. Elements of the much-expanded main house date back to the mid-1750s. The property has been in the Gardiner family since Lion Gardiner acquired it in 1648. Lion Gardiner, and many other members of the family, are buried at the South End Cemetery, which is supposedly haunted by the daughter of a former windmill operator. Olney Mairs (Bill) Gardiner, 71, inherited the property from an uncle who died in 1990. Two acres of the parcel are deeded as agricultural. Known as the Gardiner Home Lot, it was claimed in 1648 by Lion G. Gardiner, the adventurer who boldly put down roots on the 33,000-acre Gardiners Island in 1640. It is the last family-owned remnant of the original lots arranged around a mile-long common settled by private owners who made up the colony's sole voting populace when East Hampton Village was established 365 years ago. The asking price is $12.95 million, the taxes are $10,604 a year, and several small structures, including two houses, remain on the land. The classic windmill on the southwestern border, the Gardiner Windmill, was commissioned in 1804 (possibly earlier) by James Lyon Gardiner, the seventh proprietor of Gardiners Island, and in 1996 was deeded to the village, which undertook a restoration costing nearly $1 million. According to village lore, the property also produced a resident ghost, the daughter of a former windmill operator, who haunts the adjacent South End Cemetery where Lion Gardiner and other original colonists are buried. This is the only lot from the original settlement still owned by descendants of the family that settled on it, which renders it a bittersweet divestiture: the seller is 71-year-old Olney Mairs Gardiner, a retired patent lawyer who inherited the parcel at 36 James Lane from his uncle, Winthrop Gardiner Jr., a test pilot who worked with Howard Hughes and had been married to Sonja Henie, the Olympic figure skater and movie star. She supervised the landscaping around the main house, which has more than doubled in size since it was first built in the 18th century. Mr. Gardiner, known as Bill, and his wife, Karie, relocated to East Hampton from Florida, and from 1994 to 2007 moved into and planned the renovation of both homes - first the front house, where the kitchen and bathrooms date to the 1920s, and then the back house, which was originally a garage and servants" quarters. They now live nearby at 48 James Lane, in a smaller house that his grandfather had moved to that address from the family's Hog Creek Farm in Three Mile Harbor. After trying to subdivide the property into three equal lots, one for each of his children, only to be dissuaded by village preservationists, Mr. Gardiner decided to sell the remainder of the parcel as is, to assure their inheritance. "I'm 71 and the clock is ticking," he said. I certainly had reservations about parting with it, but it's time to put my house in order and let it go to create a fund for my children; I didn't want to have a fire sale at my death. The property, which lies within the Main Street Historic District, has two acres of fields deeded for agricultural/scenic use and is the only agricultural property left in the district. The 1.7-acre residential portion of the lot contains two homes, the so-called front house - a 2,700-square-foot five-bedroom three-bath shingled saltbox that dates to 1750 and can't be radically renovated or demolished - and a second, more modern 3,500-square-foot home that is probably expandable or expendable. As part of an agreement with the village to create a scenic easement for the windmill, Mr. Gardiner moved the back house to its current location; he did extensive foundation and exterior work, but never completed the interior. There is room for a tennis court and a pool and, on the agrarian acres, the potential for horses or artisanal farming, he said. The listing brokers are Brian Buckhout and Tyler Mattson of Douglas Elliman Real Estate's East Hampton office. "You can't find a lot this open and with this amount of history attached," Mr. Buckhout said. Another unique aspect is that there are two house on the property, giving you a guesthouse. The ghost of the miller's daughter apparently does not haunt either house, confining herself instead to the historic cemetery during her nocturnal rambles. "As a kid growing up in the village, I always heard her story," Mr. Gardiner said, "but when I lived there, I never saw her."