The area in Sydney's inner west that was once the site of Australia's deepest coal mine has undergone a remarkable transformation into one of the city's most desirable residential locations. Townhouses and homes now sit comfortably above what was once the Balmain Colliery, which played a crucial role in the area's industrial past. Today, median house prices in neighborhoods like Birchgrove and Balmain have surged to about $3 million, reflecting a shift in demographics and urban development over the past century.

Historically, Balmain was a bustling community dependent on coal mining, an economic backbone for local employment during its operational years. Community heritage figures like Duncan MacAuslan emphasize the historical significance of the colliery, noting how the area transitioned from a working-class enclave reliant on industry to a region marked by affluence and high real estate values. The transformation illustrates broader trends in urban development, highlighting how cities can revitalize former industrial sites into lucrative residential areas.

The discontent felt by residents of the lower north shore towards the coal mine indicated the early community resistance to industrialization, a sentiment that has evolved as the area has become a sought-after suburb. As Sydney continues to develop, this history offers insight into the complexities of urban renewal, the legacy of industries long past, and the ongoing balance between preserving historical significance and accommodating modern living needs.