It has a brick base course and rendered upper two storeys with recessed central bay which features arch sections with multi paned windows located within.

Exterior materials include face bricks, cement render, ceramic tiled roof, and timber joinery.

The Crows Nest substation is a rare and representative example of an unusual building design from the interwar period which features mansard roof corners to the main roof, decorative rendered walls with recessed bays and elongated arches to the facades.

[1] Electricity Power House was listed on the New South Wales State Heritage Register on 2 April 1999.

[1] This Wikipedia article was originally based on Electricity Power House, entry number 00931 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.