19 Mallard Drive Swan's Cove: a Lloyd Neck Gold Coast waterfront estate where the setting is finished and the next chapter is yours to design. Some properties simply can't be recreated. Swan's Cove sits at the end of a private road on acreage that Lloyd Neck's storied Gold Coast rarely offers, with Long Island Sound and Oyster Bay stretching across the horizon, from silver morning mist to gold-lit sails to a full western sunset. The land, the views, the privacy and the Cold Spring Harbor School District are already in place. So is the scale: an expansive, multi-level Colonial with a footprint most new construction can't match, soaring beamed and cathedral ceilings, an elevator, fireplaces, a finished lower level, a main-level primary suite, en-suite bedrooms throughout and a fully separate guest wing. There is a chef's kitchen with Sub-Zero, Wolf and Miele appliances, an indoor spa complex with pool, sauna and gym, a private tearoom, a home theater built for a proper premiere night, generous multi-level decking made for sunsets over the water, and a three-car garage. Now imagine it redesigned. Open the main level to the water with walls of glass. Create a modern kitchen and great room, spa-style baths, and new mechanicals and finishes throughout. Add a new facade, landscape design and outdoor living space worthy of the view. Waterfront estates at this scale, on this much land in this school district, rarely come to market, and the ones that do almost never offer this much room to shape them. A thoughtful renovation turns an inherited layout into a true signature residence and creates value you design yourself, instead of paying a premium for someone else's finish. Beyond the property line, ownership comes with membership in a rare community: Lloyd Harbor's private beach and park, with tennis, summer camp, a boat ramp and mooring rights all within reach. Swan's Cove is for the buyer who sees a legacy property where others see a project. Bring your architect, bring your builder, bring your vision, and call today to walk the property and see what it could become.