The one-story, hip-roofed frame outbuilding is constructed on a poured slab floor and shallow raised foundation to the west of the main station building and the north of the station garage. Fenestration is symmetrical on each facade. Cattle enter and exit the building through large batten doors on the north facade, divided by a cattle pen and run that is sheltered under a shed roof. Inspector's enter the building through a glazed paneled door at the center of the south facade. Eight-pane inswing hopper sash, and four-pane square barn sash are used in the windows. The exterior is clad with aluminum siding.
The interior floor is smooth finished cement, with painted fiberboard walls and ceilings. Low galvanized rails are used to route livestock through the building interior.