Tucked away on a shy half-acre in Holtsville, this unique Hi-Ranch offers a rare combination of space, flexibility, and future potential. Tax records classify the property as a Single-Family Residence with an Associated Apartment designation, while a CO is already in place for the conversion of the attached garage to living area. This unique setup presents exciting possibilities for extended family accommodations, guest quarters, a home office, or other future living arrangements (buyer to verify all uses, permits, and requirements with the Town of Brookhaven). The upper level offers bright, sun-filled living spaces, hardwood floors, and comfortable everyday living. Outside, you'll find a spacious backyard with plenty of room to entertain, garden, or create your own private retreat. Conveniently located near the LIE, LIRR Train Station, shopping, dining, and parks. The sellers are retiring and motivated to begin their next chapter, creating an exceptional opportunity for the next owner. Call NOW to schedule your private showing today before this unique opportunity is gone.