RARE OPPORTUNITY to own a 3,200 sq. ft. corner-lot Colonial in the highly coveted Old Harbour Green community of Massapequa-known for its picturesque streets, timeless architecture, and coastal charm. Available for the first time in over 30 years, this home showcases classic design, generous scale, and standout features, including two wood-burning fireplaces, an attached two-car garage, and a stunning sun-soaked, two-story glass atrium. Step inside to discover beautiful hardwood floors, crown molding, built-in bookcases, and an inviting layout that blends traditional character with everyday comfort. The formal living room and cozy den each feature their own fireplace, while a versatile rear entertainment room offers excellent potential for a guest suite or in-law setup. *Important note that all carpeted rooms have hardwood flooring underneath (besides the back entertainment room). An inviting eat-in kitchen with newly upgraded appliances expands seamlessly into a spacious dining room, ideal for hosting parties large or small. A private home office with custom built-in desk, cabinetry, and a sun-drenched bay window provides a refined and functional workspace. The first-floor full bathroom has been newly remodeled with stylish finishes. A true highlight is the impressive two-story glass atrium with brick flooring, vaulted ceilings, and a spiral staircase-a year-round, one-of-a-kind retreat beaming with natural light to unwind, entertain, or simply soak in the outdoors. Upstairs, the primary suite impresses with its private balcony, whirlpool soaking tub, and steam shower. Three additional bedrooms provide ideal comfort and flexibility for family or guests. Additional thoughtful touches include a formal foyer, mudroom entry, newly upgraded HVAC system, and attached two-car garage for everyday convenience. Outside, enjoy a meticulously maintained corner lot with mature landscaping, attractive hardscaping, irrigation system, back patio ideal for entertaining, and a custom-finished driveway. Located just a short walk from Birch Lane Elementary and the Bar Harbour Library, and a short drive to Green Harbour Beach Club, situated directly on the Great South Bay (membership optional), this property offers the perfect blend of comfort, character, and coastal Long Island living. Come discover why Old Harbour Green remains one of Massapequa's most sought-after neighborhoods and make 67 Bay Drive your forever home!