It is situated in the median of the Mitchell Freeway between the Lukin Drive and Hester Avenue interchanges.

Nowergup depot was built to service the Transperth B-series electric multiple units that were ordered to operate service on the Yanchep line (formerly known as the Joondalup line).

It is owned by the Public Transport Authority and leased to EDi Rail / Alstom Transport as part of its contract to maintain the B-series trains.

[1] The depot was completed on 17 May 2004 and officially opened on 13 June 2004 by Premier Geoff Gallop and Planning & Infrastructure Minister Alannah MacTiernan.

[6] The depot is currently the base for B-series and C-series electric multiple units that operate services on the Yanchep and Mandurah lines.