258 Horsemill Lane

The estate is called Listowel. It sits south of the highway in Water Mill, in the town of Southampton, at the Water Mill South end of the hamlet. The listing puts the parcel at 6.9 private acres; the county roll records 6.76, a shade under 295,000 square feet, on one lot. Three hundred and sixty feet of that edge is Mecox Bay frontage, and the MLS sheet carries waterfront access, dock rights and bay views against it. What surrounds the property is farmland that has been worked for centuries, which is the reason the sight lines stay open and the views run west over the water and on toward the ocean.

The house went up in 2009 and reads as shingle style, though the MLS files it under the plainer heading of transitional. Two stories. The listing measures it at twelve thousand square feet, the MLS sheet at nine thousand four hundred, and the public record at ten thousand four hundred and twenty four, which is the usual spread between what a house measures and what it is sold as. Seven bedrooms, eight baths, and eight fireplaces on the record. Inside there is a library, a media room, a den, a study, a family room and a breakfast room, with a first floor bath, a foyer and a laundry. The interiors were taken apart in 2023 and put back on a more workable plan, the entertaining rooms opened up and the primary suite rebuilt. The MLS records it as extensive renovations and improvements.

The pool is gunite, heated, and runs forty five by twenty feet, with a pool house beside it and room on the property for a tennis court. English gardens and an orchard fill the grounds. Covered porches run along the elevations, one of them set for dining at the bay. A carriage house holds a studio office suite, a permitted three bedroom guest house stands apart from the main house, and a private dock reaches out into Mecox. A detached garage takes two cars. Water is municipal, the septic is private, and the basement is crawl space.

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