Exterior The building features a complex layout and a compact volume, spanning four above-ground floors. It is distinguished by the stylistic differences between its two facades: the more prominent one on Corso Carducci displays a moderately
modernist style, while the rear facade, added later, showcases simpler solutions and different material usage. The main facade is symmetrically arranged with nine openings per floor, and slightly projecting side wings, unified by a
stucco surface adorned with ceramic and brick
friezes. On the ground floor, nine arched openings accommodate commercial activities, except for the central one, which serves as the main entrance to the offices. The
noble floor features three balconies aligned with the central door and the side wings, brick bands and architraves, and a ceramic frieze with
Maremma,
Etruscan and agrarian symbols, reflecting the building's original purpose. The second floor simplifies these elements and includes a ceramic band with floral motifs between the window arches and the brick cornice. The top floor, set back from the
eaves, consists of nine simple windows aligned with those below. The rear facade, spanning three above-ground floors, is characterized by
lintelled windows with travertine and brick surrounds. A horizontal brick band separates the floors, with a brick
balustrade on the terrace above.
Interior The portal on Corso Carducci opens into a
vestibule with a travertine base, leading to the ground floor service areas, including the custodian's apartment and storage rooms. From the vestibule, you enter the main
atrium, which features a large arched window overlooking the central courtyard and a staircase with three flights, complete with an iron railing and lamp. This staircase provides access to a peripheral corridor around the stairwell and courtyard, which connects to the offices and secondary corridors on the three upper floors. The Civil Engineering Department offices are located on the first and second floors, while the third floor houses the offices of the Public Works Department and the Chief Engineer's apartment. ==Critical reception==