The bank hired Boston-based architectural firm Thomas M. James Company to design a six-story addition, with assistance from Sanguinet, Staats, Hedrick, and Gottlieb.

[2] By the late 1920s, real estate development had intensified around the building and many prominent professionals were leasing office space there.

[2][3] South Coast Life Insurance acquired the building in 1955, while Second National Bank gradually withdrew from occupancy and had completed vacated by the late 1950s.

In 1969, First National Life Insurance bought the building[3] and modernized the facings with a slipcover featuring glass and Georgian-marble panels.

The purchaser, Pearl Real Estate of Fort Worth, specializes in the development, construction, and operation of hotels.

[5] Pearl Hospitality hired Gensler to design and manage the restoration of the Carter Building and its transformation into a luxury hotel.

[2] On November 19, 2014, JW Marriott held a grand opening for its 328-room hotel at 806 Main Street, the site of the restored Carter Building.