Unlock the potential of a rare historic gem in the heart of Mount Vernon! 919 N Calvert Street offers a unique development opportunity with incredible architectural charm and versatile space. This grand 4-story, 3, 969 sq ft Federal-style townhouse features stunning original detailssoaring tin ceilings, intricate millwork, hardwood floors, and marble mantelsjust waiting to be restored or reimagined. Ideal for residential, mixed-use, or boutique commercial redevelopment, the property includes a spacious first-floor showroom, two upper-level apartments, a full-height basement with dual egress, and a private rear patio with alley access. A detached 600 sq ft Dry Building offers additional flexible space and potential for garage conversion or a carriage houseopening the door for rare off-street parking in a prime city location. Situated just steps from dining, arts, and transit in historic Mount Vernon, this is a one-of-a-kind opportunity to bring new life to a timeless property in one of Baltimores most vibrant neighborhoods.