It is associated and adjacent to the large Lawson electric line works maintenance depot that still operates with administration offices.

The extended bay at the southwest end has painted fibrocement wall panels on rendered brick base with 6-pane horizontal sliding windows and a timber door with decorative fanlight.

Other features include rendered splay course to plinth, moulded cornice, two horizontal moulded rendered string courses at corbel height, timber framed double-hung windows with multi-paned coloured glass upper sashes, timber framed and panelled doors with multi-paned coloured glass fanlights, contrasting decorative trims and sills around windows and doors, standard iron brackets over decorative corbels supporting ample platform awnings, fretted timber work at the end of awnings and gable ends, timber cross finial to gable end, two tall face brick corbelled chimneys with rendered tops.

Light fittings, fans and floor covering including carpet finish in the offices and tiles in the toilets and the waiting room.

The former signal box within the station building is now used for storage purposes, however its interlocking 16 lever frame and the CTC panel are still extant.

[3] External: A small square shaped detached face brick shed featuring moulding and rendered string course detailing similar to the main station building.

The shed features a gabled corrugated metal roof with timber bargeboard and narrow eaves with exposed rafters, contrasting rendered moulded trim above the fanlight over a single door on northeast side elevation and two double – hung windows with multi-paned upper sash featuring multi-coloured glass panes similar to the station building on both of the side elevations.

[3] Internal: Currently used as a storeroom with a timber cupboard and shelving, the out-of shed consists of a concrete floor with painted brick walls, exposed timber roof structure with ceiling joists, rafters and relatively new corrugated metal roofing, and one single modern light fitting.

The end of the down siding, which was only used occasionally until recently to store track machines when waiting to start or be collected after trackwork, has been partially removed and completely covered with aggregate as part of upgrading works along the road boundaries of the rail corridor.

[3] Access to the island platform is via an asphalt ramped access way from the Great Western Highway and Loftus Street (and commuters' car park) which leads to the face brick vaulted subway and a central stairway to the station platform on the southwest side of the main station building.

A wing accessed via an enclosed verandah (and from one of the bedrooms by later opening) includes a kitchen with a later c. 1946 timber extension for a laundry and internal bathroom.

[3] Located to the northwest of Lawson Station adjacent to the laneway and subway entrance, the Electrical Depot site is a combination of the former District Engineer's Office and a series of brick and corrugated iron workshops and stores that were built in the 1950s as part of the electrification of the railway to Lithgow.

The workshops and the stores are placed at the railway and street boundaries of the site while the L-shaped office block is located on the northern corner next to the entrance to the depot.

[3] External: A large one to two-storey brick office building with hipped terracotta tiled roof, in an L-shaped form and accommodates administration and amenities and facilities for the engineers and field/admin staff.

The building's fenestration includes a series of regularly placed tall timber sash windows and doors generally facing the courtyard.

[3] External: There are seven workshops and stores on the depot site all of which are generally of similar construction with utilitarian appearance in various sizes and one or two storeys in height.

However, it is noted to have a steel truss exposed roof structure and concrete slab floors with painted wall finishes to the essentially large warehouse type spaces.

Brick dwarf walls to the subway tunnel entries on both sides of the trucks together with the low height plantings add to the overall setting of the site.

[3] Another 1907 Monier Arch bridge (used for pedestrian access) – 1 km east of station near Somers Street and GWH overbridge has separate S170 listing.

[3] Blue Mountains Transit operates one bus route via Lawson station, under contract to Transport for NSW: As at 9 November 2010, Lawson Railway Station Group is of state significance as an important railway location along the Main Western Line and is significant for its important historical role associated with locomotive servicing facilities and the change to electric traction power supply at this steepest part of the Blue Mountains.

While the original function of the building has been superseded by modern technology, the substation represents one of the final phases in the development of the electrified railway system for the Sydney Metropolitan area.

[3] Lawson railway station was listed on the New South Wales State Heritage Register on 2 April 1999 having satisfied the following criteria.

It demonstrates the technological and engineering achievements in the early 1900s and is an important part of the townscape of the Lawson historic village and is highly visible from the main road.

The Electrical Depot site demonstrates another major phase in the historical development of Lawson Station precinct featuring buildings built in the 1950s as part of the electrification of the railway to Lithgow.

[3] The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales.

The buildings of the Electrical Depot including the former District Engineer's office and the associated stores and sheds collectively form a cohesive character within the landscape of the station precinct.

[3] The place has potential to yield information that will contribute to an understanding of the cultural or natural history of New South Wales.

Lawson Station Group has research potential for its combination of buildings and structures that would provide information on the elements of the equipment contemporary with the electrification of the Main Western line over the Blue Mountains.

[3] The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales.

The Electrical Depot site is rare in the railway network, which includes the substation, one of a small number of such building and one of the largest remaining on the system.