Flexible Wallingford duplex/ADU with two fully separated units, private entrances, and separate meters. Upper unit features bright living/dining spaces, gas fireplace, remodeled kitchen with eating area, and refinished fir floors. Lower unit includes its own full kitchen, modern windows, and private living areas. Major 2010 upgrades include composite roof, copper plumbing, insulation, exterior paint, deck replacement, window sealing, and added ventilation. Significant sewer repairs were completed in 2026. Outdoor amenities include a large deck, patio, garden beds, and powered shed. Highly walkable location near Gas Works Park, Lake Union, Burke-Gilman Trail, dining, and transit. Strong rental potential or owner-occupant income opportunity with flexible layout for long-term investment