to the fact that the building was designed by New South Wales (NSW) Government Architect, W. L. Vernon. New South Wales State Heritage Register Pyrmont Post Office was listed on the New South Wales State Heritage Register on 22 December 2000 having satisfied the following criteria. The place is important in demonstrating the course, or pattern, of cultural or natural history in New South Wales. Pyrmont Post Office is associated with the early development of the area, as it is linked with the original post office established in 1852. The construction of a new, larger building in 1901 reflects the development of the area as a key industrial and warehouse suburb of Sydney, which resulted in the growth of the local population during the end of the nineteenth century. The growing community required improved services, and lobbied for a new post office. The Post Office was also an important part of the consolidation of communications services to the Pyrmont/Ultimo community. The building has a history of continuous original use that spans almost a century. Pyrmont Post Office provides evidence of the development of workers' conditions in NSW, particularly with regard to the level of self-containment of the residence. The residence at Pyrmont included the laundry and kitchen, which differs from post offices constructed up to the 1880s. These facilities were previously housed separately from the main building and added later. The unusual architectural footprint of the building reflects the difficulty with designing and constructing new buildings in well-established suburbs in Sydney. Pyrmont Post Office was designed by the NSW Government Architect's Office under Walter Liberty Vernon, a key practitioner of the Federation Free Style of architecture. The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales. Pyrmont Post Office is aesthetically significant because it is a distinctive example of the Federation Free Style of architecture in NSW. Constructed predominantly of sandstone, Pyrmont Post Office is a visually pleasing element in the historic civic precinct of Pyrmont. The use of stone as a walling material is comparable with earlier post office designs at Cooma (1879) and Wilcannia (1880), and its design compares with Burwood Post Office (1892). Located in the Pyrmont Square Group, the Post Office forms part of a significant late Victorian and Federation period streetscape, which is the focal point of the Pyrmont urban area. The place has