Located in the charming historic Washington Street, this unique 3,958-square-foot detached brick property presents an exceptional opportunity for strategic real estate buyers and investors. Originally custom-built in 1900, the property features a highly flexible back-to-back duplex layout equipped with separate, dedicated foyers for each unit. This distinct architectural footprint maximizes privacy while allowing for multi-family long-term rentals, an integrated owner-occupant house, or commercial conversion given its historic mixed-use versatility. The expansive 20-room interior maintains strong foundational character anchored by four focal-point antique tiled fireplaces. Have your business downstairs and live upstairs! The property is situated on a level 0.23-acre lot. The exterior requires low maintenance while adding competitive market value through an expansive garden area and a private asphalt driveway providing rare off-street parking. Located on Washington Street, the property has immediate access to downtown Cumberland amenities. Whether your investment model targets a stable cash-flowing duplex, a premium live-work corporate office, or a high-end historic restoration for resale, this classic structure provides the robust square footage, configuration, and prime location to maximize your portfolio's ROI.