Welcome to 1 Cottontail Lane, an immaculately maintained High Ranch nestled in East Setauket’s desirable Heatherwood Village section, within the prestigious Three Village School District. Showing true pride of ownership, this diamond-condition home boasts exceptional curb appeal, highlighted by a wide, expanded driveway, professional landscaping, and a pristine paver walkway with integrated retaining walls leading to the front door. Inside, the main level features soaring vaulted ceilings, custom millwork, bespoke window treatments, and high-quality American Craftsman vinyl tilt windows alongside an Anderson door. The open living and dining areas feature gleaming hardwood floors, with doors leading into the dining space. The updated eat-in kitchen is equipped with bright white cabinetry, premium granite countertops, stainless steel appliances, a center peninsula, and gas cooking. Another Anderson door opens from the kitchen to a spacious deck overlooking the property. This level is completed by a luxurious, custom-designed bathroom with a double vanity, a spacious primary bedroom, and two additional bedrooms. The lower level serves as a versatile retreat, offering a generous family room centered around a cozy wood-burning fireplace and durable tile flooring. It also includes a dedicated home sitting room accenting a stylish reclaimed wood wall, a private gym, and a spa-like full bathroom with premium tile work and a corner shower. The attached garage houses the laundry area with a washer and dryer. Outside, the fully enclosed backyard features designer PVC privacy fencing, an above-ground pool, a multi-level deck, and a separate paver patio, providing the ultimate setup for outdoor entertaining and play. Additional highlights include a separate hot water heater and central air conditioning (6 years young) powered by gas heat.