The substation was added to the New South Wales State Heritage Register on 2 April 1999.

Exterior materials used were face brick, rounded ceramic roof tiles, and steel roller shutter doors.

As at 15 March 2001, The Randwick substation is a rare, substantial, attractive and well detailed building of state significance, being representative of the interwar Mediterranean style.

"Although a major part of the Bunnerong Power Station distribution network, the Sydney Municipal Council was still keen to provide a building worthy of a residential area.

[1] This Wikipedia article was originally based on Substation, entry number 00935 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 2 June 2018.