The MSB Stores Complex is a heritage-listed former warehouse and gas manufacturing plant and now offices and storage located at 2–4 Jenkins Street in Millers Point, Sydney, Australia.

By the end of 1845, the five storey warehouse building, a workshop (constructed by Morris) and the cottage stood above the Gasworks in Jenkins Street.

The MSB Stores complex is of historical significance as Sydney's first gas manufacturing plant and gasworks, and illustrates the early development and subsequent growth of the organisation.

The complex is of significance for its association with the port facilities and maritime activities of Darling Harbour and its role in the historical, social and physical development of Sydney.

It has strong associations with prominent persons and organisations such as the Australian Gas Light Company (AGL), Sydney Harbour Trust, and Maritime Services Board.

[1][2] MSB Stores Complex was listed on the New South Wales State Heritage Register on 18 April 2000 having satisfied the following criteria.

It is associated with architects Ginn Hilly & Mansfield, and with organisations such as the Australian Gas Light Company, Sydney Harbour Trust, and Maritime Services Board.

The MSB Stores complex contains a fine example of warehouse in the Victorian Georgian style, significant for its use of stone quarried on the site.

The complex is associated with the supply of gas to the community and later with the port and maritime facilities of Darling Harbour which played an important role in the social and physical development of Sydney.

Building 1 of the complex is of scientific significance as the oldest remaining above ground structure from Sydney's first gas manufacturing plants.