The building comprises four floors. The solid building, clad with yellow Hauterive limestone slabs, closes with a slightly sloping hipped roof. The entrance area is recessed and accessed with steps above the corner. The setback is accented with a slightly projecting canopy that extends over the building's lettering on both sides. The slender horizontal band of the roof corresponds with the cornice along the eaves. The tall first floor houses the post office counter area and has floor-to-ceiling windows on the show side facing the Neumarkt. The lower windows of the second floor correspond in width to the first floor, while the openings of the two floors above are combined into slender vertical window slots. The strong vertical accent continues on the southwest façade with the stairwell's floor-to-ceiling window. The actual number of storeys is only evident on the southeast façade at four rows of windows. All window reveals are set off from the plane of the façade with a joint.