Rare waterfront opportunity in the highly desirable Harbour Green section of Massapequa! Set on an oversized .32-acre property with approximately 100 feet of bulkhead, this expansive 4,629 sq. ft. contemporary offers incredible space, water views and exceptional potential. Featuring 5 bedrooms and 5 baths, the home includes a spacious primary suite with en-suite bath, walk-in closet and private balcony overlooking the yard and water, plus two additional bedrooms with en-suite baths. A dramatic great room with soaring ceilings and multiple living and entertaining spaces throughout the home provide tremendous flexibility. Outside, enjoy a large waterfront yard, in-ground pool, deck, patio, bulkhead and boat slip. Just a short distance to Sunset Park and offering rights to the Harbour Green Shore Club. Exceptional house size, property size and waterfront footage for the area - a rare opportunity in one of Massapequa's most sought-after waterfront communities.