Excellent investment opportunity in the heart of Callahan! Located directly across from the historic Callahan Train Depot, this well-maintained concrete block duplex on half an acre offers strong rental potential and numerous recent upgrades. Each unit features a comfortable 2-bedroom, 1-bath floor plan with updated interiors, including custom cabinetry, new flooring, and remodeled living spaces. Approximately $70,000 in improvements have been completed within the last two years, enhancing both units for long-term value and tenant appeal. Property features include city water and sewer service, two carports, and additional storage space for each unit. Built with durable concrete block construction, and recently renovated, this duplex offers a low-maintenance investment in a growing Nassau County location. Conveniently situated near downtown Callahan, schools, shopping, dining, and major commuter routes, this property is ideal for investors seeking immediate income potential or owner-oc