Discover this beautifully updated full duplex in the heart of Marathon, ideally situated on an oversized 10,000 sq ft lot and tucked among mature native trees that provide shade and privacy year-round. Elevated on a stilted structure with a concrete roof, this solid CBS concrete construction property offers durability, peace of mind, and long-term value — a rare combination in the Florida Keys. Each unit has been fully remodeled and features white terrazzo floors throughout, stainless steel appliances, and granite countertops, creating a clean, modern coastal aesthetic. Recent upgrades include new HVAC systems and impact windows, ensuring comfort, efficiency, and storm readiness. This duplex has a strong income history, previously grossing approximately $69,000 annually. One side is currently being left vacant to allow for easy showings, presenting a seamless transition for the next owner. The flexibility of this property makes it ideal for living in one unit and renting the other, employee housing, or as a 1031 exchange opportunity to shelter gains while generating cash flow. Photos for other side will be added soon. The concrete roof and elevated construction provide added confidence against the elements and make this an excellent option for both personal use and business continuity. With ample parking for guests, vehicles, or recreational toys, and a central Marathon location close to shopping, dining, marinas, and beaches, this property delivers convenience, functionality, and versatility. Very few multifamily opportunities exist in the Keys that combine location, structure, income potential, and move-in readiness like this one. Clean, centrally located, and ready to live in or rent — don't miss this rare chance to own your piece of paradise in the Florida Keys.