Fairfield Railway Station Group has State significance with its 1850s combined residence/office building which along with sympathetic additions to its west retains characteristic features of this type of station building namely gabled roof, the two rooms width of the original residence section of the building and veranda awnings supported by timber posts. The '1860s "Second Class Station Building" despite extensions to its south and west retains typical features, namely the original symmetrical section of the building and its hipped roof with chimneys. Similarly the 1890s "Third Class Station Building" despite additions and alterations has most of its architectural features and details intact including the varied roof forms, the awning supported on original cast iron posts with Corinthian capitals and decorative cast iron brackets. The footbridge with stairs leading down the platforms, has been recently covered and its surfaces recently tiled. However its superstructure, consisting of a riveted steel "Warren Truss" with angle iron trestles and channel iron stair stringers and compressed fibre cement decking, is original 1910s fabric and is typical of such footbridges within the suburban network. The station with its platform buildings, station building and footbridge collectively forms a recognisable landmark in the local area.