[6] Soon afterward Treasury Secretary Andrew W. Mellon and the Board of Architectural Consultants, composed of leading architects and headed by Edward H. Bennett of the Chicago architectural firm of Bennett, Parsons, and Frost, developed design guidelines for the site.

[2] Democratic Representative John G. Fary of Illinois, chairman of the House Subcommittee on Public Buildings and Grounds brought the bill up for consideration as a favor to Republicans.

[2] An aide was quoted as saying, "He was a little concerned what some people might think of him bringing up a bill to honor Herbert Hoover in the midst of a Republican recession.

[12] In 2007, the General Services Administration announced an eight-phase, 13-year, $960 million modernization and renovation of the Herbert Hoover Building.

[17] Nonetheless, GSA pressed ahead with plans in February 2012 to create a more secure barrier around the Herbert Hoover Building.

[4] Flexible partitions rather than permanent walls were a part of the original design for many of the offices to allow for changes in departmental organization.

This east-facing facade is on Fourteenth Street, and contains sixty-three bays, or vertical spaces between columns divided into five portions with projecting sections at the ends and the center.

[19][20] "The center section contains a dramatic Doric colonnade of twenty-four fluted columns, each forty-two feet tall, comprising the third through fifth floors.

This section also contains the major pedestrian entrances, and its roofline is crowned with a repeating series of alternating carved eagles and torches.

Similar portals are used for the three central pedestrian doors, inset with elaborate rectangular granite openings and triangular pediments atop carved corbels.

Clusters of three large, bronze, octagonal lamps, each with an acanthus base, rope molding, and spiraletes flank these doors."

[9] Aspects of other buildings built in Federal Triangle in the 1930s are present in the building, including courtyards – natural light and ventilation are provided to inner offices by six interior courtyards[4] – and a Neoclassical (Greek Revival) architectural style (a Doric colonnade on three sides).

[23][24] Because the Census Bureau is a part of the Commerce Department, the official Population Clock at one point was located in the lobby of the Hoover Building.

[26] It closed on September 30, 2013, after Budget sequestration in 2013, having permanently lost its location due to the renovation of the Herbert C. Hoover Building.