[1] Later alterations and additions occurred, most significantly a police station to the rear of the courthouse and likely outside, or adjacent to the wall of the barracks visible in Hoddle's 1827 map and the 1840 plan.

[1][3]: 14 The land around the Georges River and Liverpool was occupied by the Darug Aboriginal people prior to the arrival of British settlers in 1788.

[1] The development of Liverpool in the second half of the 19th century was driven by the establishment of the railway in 1856, although substantial expansion did not occur until the end of the 1880s when there was a growth in workers housing and subdivision of previously vacant land.

[1][3] A single-storey Colonial Georgian style government building with hipped roof, with L-shaped plan, probably incorporating main block of convict gaol built early 1820s.

The potential archaeological remains of the barracks at the rear of the courthouse may provide key ongoing research opportunities in fields such as convict studies, colonial settlement and working class communities, all important themes in Australian history.

Because of its early construction and use as a convict barracks before it became a courthouse, the building demonstrates variation in form and style in NSW, highlighting its rarity and importance.

[1] In its role as a courthouse, it provided an important contribution to the administering of law and order and the furthering of social justice over a period spanning 120 years.

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

The site contains areas of archaeological significance at a state level as these can provide evidence of material culture which yields information that may be unavailable from documentary sources alone.

Analysis of the archaeological information that could potentially be gathered at this site includes data that would provide a window into the changing impact of Government during the formative historical period.

The Former Liverpool Courthouse buildings provide a fine example of early 19th century architecture erected during the significant period of Governor Macquarie's governorship.

It is part of a group of Colonial buildings which includes St Luke's Church and the former Hospital, which illustrate different aspects of Liverpool's convict beginnings.