The tram depot and Newtown railway station were jointly added to the New South Wales State Heritage Register on 2 April 1999.

The north and south brick gables enclose the iron sawtooth roof structure and has a series of large circular vents bordered by polychromatic brickwork.

[1] The annex buildings, where they have survived in near original form, are constructed of face brickwork in Flemish Bond with timber windows.

[1] Built and partitioned within brick walls to roof for a battery room in 1914 as part of the system associated with the large sub-station installed.

[1] Built shortly after opening of the tram depot in 1900 it remains largely intact as a single room accessed by a flight of stairs.

[1] Originally built in 1900 as tram traffic offices with attached toilets in the Federation Period style with a single storey only.

The building is constructed from English bond brickwork with a hipped form roof clad with Marseilles terracotta tiles.

Now partly paved over there is evidence of much of the original tram tracks remaining particularly obvious on the northern boundary with the railway line.

[1] This is a slightly smaller yard leading off Angel Street which contains a later railway signal and communications building but now is virtually vacant.

[1] Design features including:[6] The former Newtown tram depot has state historical significance as it formed an integral part of the electrification of the NSW tramway system which commenced in 1899.

[1] Newtown Tramway Depot was listed on the New South Wales State Heritage Register on 2 April 1999 having satisfied the following criteria.

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

Based upon existing documentary evidence there is potential for the Former Tram Depot site to contain archaeological remains likely to contribute to a further understanding of early 20th century living and working conditions in the Newtown area.

The site and the open yard areas also have potential to reveal information relating to early 20th century tram and electric power generation history.

The former Tram Depot at Newtown is one of few such buildings of the NSW tramway system that survive in Sydney and is the oldest in its original form.

They generally represent the high level of government commitment to the provision of mass electric transport to Sydney's suburbs at the start of the 20th century.

[1] This Wikipedia article contains material from Newtown Railway Station group and Former Newtown Tramway Depot, entry number 1213 in the New South Wales State Heritage Register published by the State of New South Wales (Department of Planning and Environment) 2018 under CC-BY 4.0 licence, accessed on 13 October 2018.