[4] In September 1952, the name reverted to the Security Building when the Pan American Bank moved to a new headquarters on SE Third Avenue.

[3] In 2014, the Downtown Arts and Science Salon (DASS) was founded and used the first floor as an exhibition and lecture space.

[3][8] The building began operations as WeWork's downtown Miami flagship location in December 2017 following a $20 million dollar renovation, offering space for more than 1,200 members in a mix of private offices, 17 "nooks", 28 meeting rooms, 20 lounges, phone booths, and event space.

"[8] In early 2019, an investor group proposed purchasing the Security Building using tokenized ownership.

Inveniam Capital Partners proposed a purchase price of $65.5 million, and a Dutch auction to allocate equity, in what was claimed to be "one of the largest known cryptocurrency real estate transactions of its kind.

The building maintains a zero-foot (0 m) setback, and the entry doors open directly onto the sidewalk.

With only a 50-foot (15 m) frontage, the architect made a grand statement by creating an almost temple-like base, consisting of the first three stories.

Above the windows of the fourth floor is another projecting element, a stringcourse that is ornamented with a guilloche pattern in relief.

Mansart worked in the 17th century and introduced the roof form that extended attic space to provide additional usable area.

The mansard roof is a character-defining feature of the Second Empire style that was named after Napoleon III, who took on major building projects in Paris during the 18th century.

The mansard roof of the Security Building is clad in copper and terminates in a series of antefixae.

An eight-sided cupola that extends from the center of the roof is fenestrated on each side with a multi-paned arched window.