One of the more popular tall commercial building types, the two-part vertical block contains a street-level zone, which may extend to a second story, and an upper, multi-storied portion. In contrast to the two-part block already discussed, the two-part vertical block has two distinctly different facades and consists of at least four stories in all.
The street level of the façade usually contains large window bays of glass to encourage retail business or to display banking functions. The upper zone is distinguished from the street level by the window pattern or by framing the windows with engaged columns or pilasters.
Corners are frequently reinforced by decorative masonry patterns such as quoins. The top of the façade usually terminates in a cornice or stringcourse of decorative masonry to differentiate it from the lower stories.