The former Department of Primary Industries Building, an unpainted rendered and painted brickwork structure, consists of a two-storeyed with basement section fronting William Street with a lower three-storeyed wing at the rear fronting Queen's Wharf Road.
The building, located adjacent to the former Commissariat Store, and across the road from the former Queensland Government Printing Office and adjacent former Land Administration Building), is built on a steeply sloping site, and has a hipped rib and pan galvanised iron roof.

The symmetrical William Street section has a central entrance with a projecting wing at either end.
The ground floor has coursed render with quoining, the first floor has an expressed band at window sill height and the eaves are jettied.

The entrance consists of a two-storeyed gabled element which projects from the face of the building, and is composed of an arched doorway to the ground floor with unpainted rendered classical detailing above and to the first floor.
The detailing includes coursed render to the ground floor expressing voussoirs, above which is located an open-crown pediment with relief mouldings which are described in the Brisbane Sculpture Guide (Judith McKay 1988) as The festoon of Queensland agricultural produce—including wheat, strawberries, macadamia nuts, bananas and pumpkins— (which) is given due status by the addition of classical acanthus leaves.
Above this are paired columns either side of a shield, which originally housed the words "DEPARTMENT OF AGRICULTURE", which support an entablature with an urn at either end and a low arched window with expressed keystone to the first floor in the centre.
The pediment above has a central shield with the date 1898 AD.
The doorway has double panelled timber doors, with an arched fanlight with radiating mullions.

The William Street facade has paired tall, narrow, multi-paned timber sash windows, with the end facades having single sashes.
The ground floor windows are surrounded by unpainted rendered mouldings with expressed sills and cornices above, and the first floor windows have similar details but with keystone-type heads.
The northern end facade has a central chimney, with curved details at first floor height, which is surmounted by a large cornice with double arched flue covers.
The southern end facade, the point of connection to the recently demolished post-1899 extensions, has been rendered to suggest floor levels and the position of the original chimney.

The William Street facade also has two lightwells to the basement, located either side of the central entry abutting the end wings, which consist of a curved porphyry retaining wall with sandstone capping and wrought iron balustrading.
The lightwells are bridged by a concrete walkway where they abut the end wings, accessing a single panelled timber door with fanlight, and featuring an iron gate with the letters DA intertwined.
The southern door, however, has been enclosed and replaced with a sash window, and a later sash window has been introduced to the first floor flanking wall of the southern wing.
A retaining wall with sandstone capping, end pillar and wrought iron balustrade extends from the building along the William Street frontage to the south.

The rear of the William Street section has verandahs to all three floors either side of the central rear wing and abutting the end wings.
Originally enclosed with vertically jointed boarding covering verandah stairs with open arched sections either end, the verandahs have all since been enclosed with fibrous cement sheeting and a variety of windows.

The rear wing is a three-storeyed painted masonry structure on a porphyry base, one level lower than the William Street section, with a crucifix plan and a number of additions which include a three-storeyed toilet block on the northwest, a two-storeyed enclosure on the southeast, and various stairs and single-storeyed sheds around the base.
Floor levels are expressed with relief banding, windows are mostly multi-paned sashes, and timber and iron window hoods are located on most windows
The former Department of Primary Industries Building, an unpainted rendered and painted brickwork structure, consists of a two-storeyed with basement section fronting William Street with a lower three-storeyed wing at the rear fronting Queen's Wharf Road. The building, located adjacent to the former Commissariat Store, and across the road from the former Queensland Government Printing Office and adjacent former Land Administration Building), is built on a steeply sloping site, and has a hipped rib and pan galvanised iron roof.
The symmetrical William Street section has a central entrance with a projecting wing at either end. The ground floor has coursed render with quoining, the first floor has an expressed band at window sill height and the eaves are jettied.
The entrance consists of a two-storeyed gabled element which projects from the face of the building, and is composed of an arched doorway to the ground floor with unpainted rendered classical detailing above and to the first floor. The detailing includes coursed render to the ground floor expressing voussoirs, above which is located an open-crown pediment with relief mouldings which are described in the Brisbane Sculpture Guide (Judith McKay 1988) as The festoon of Queensland agricultural produce—including wheat, strawberries, macadamia nuts, bananas and pumpkins— (which) is given due status by the addition of classical acanthus leaves. Above this are paired columns either side of a shield, which originally housed the words "DEPARTMENT OF AGRICULTURE", which support an entablature with an urn at either end and a low arched window with expressed keystone to the first floor in the centre. The pediment above has a central shield with the date 1898 AD. The doorway has double panelled timber doors, with an arched fanlight with radiating mullions.
The William Street facade has paired tall, narrow, multi-paned timber sash windows, with the end facades having single sashes. The ground floor windows are surrounded by unpainted rendered mouldings with expressed sills and cornices above, and the first floor windows have similar details but with keystone-type heads. The northern end facade has a central chimney, with curved details at first floor height, which is surmounted by a large cornice with double arched flue covers. The southern end facade, the point of connection to the recently demolished post-1899 extensions, has been rendered to suggest floor levels and the position of the original chimney.
The William Street facade also has two lightwells to the basement, located either side of the central entry abutting the end wings, which consist of a curved porphyry retaining wall with sandstone capping and wrought iron balustrading. The lightwells are bridged by a concrete walkway where they abut the end wings, accessing a single panelled timber door with fanlight, and featuring an iron gate with the letters DA intertwined. The southern door, however, has been enclosed and replaced with a sash window, and a later sash window has been introduced to the first floor flanking wall of the southern wing. A retaining wall with sandstone capping, end pillar and wrought iron balustrade extends from the building along the William Street frontage to the south.
The rear of the William Street section has verandahs to all three floors either side of the central rear wing and abutting the end wings. Originally enclosed with vertically jointed boarding covering verandah stairs with open arched sections either end, the verandahs have all since been enclosed with fibrous cement sheeting and a variety of windows.
The rear wing is a three-storeyed painted masonry structure on a porphyry base, one level lower than the William Street section, with a crucifix plan and a number of additions which include a three-storeyed toilet block on the northwest, a two-storeyed enclosure on the southeast, and various stairs and single-storeyed sheds around the base. Floor levels are expressed with relief banding, windows are mostly multi-paned sashes, and timber and iron window hoods are located on most windows
Department of Primary Industries Building