Welcome to 4904 D St SE, Washington, DC 20019, a brand-new, beautifully designed home featuring an Accessory Dwelling Unit (ADU), offering a rare combination of modern living and exceptional versatility. This three-level attached single-family home spans 2,760 square feet and includes 5 bedrooms, 3 full bathrooms, and 1 half bath. The upper two levels serve as the main residence, featuring 3 spacious bedrooms, 2 full bathrooms, a half bath, and an open-concept floor plan with a gourmet kitchen, dining area, and a bright, airy living space perfect for entertaining and everyday comfort. The ground floor is a fully self-contained ADU with a separate entrance, 2 bedrooms, 1 full bathroom, a full kitchen, and dedicated living and dining areas, ideal for multigenerational living, a private guest suite, or a valuable rental income stream. This unique property is equipped with two HVAC systems, two full appliance packages (including washers and dryers), two water heaters, and matching modern cabinetry and countertops in both kitchens. Located in the emerging Marshall Heights neighborhood, with easy access to public transportation and downtown DC, this home is a rare opportunity for homeowners seeking flexibility or investors looking to maximize rental potential.