Built over 70 years ago as a diesel workshop for new trains, the site and buildings beside the main-trunk railway in the valley below Parnell Road and the Auckland Domain fell to disrepair after the workshops were revisited. Mainline Steam, a trust set up to salvage and repair heritage trains for the longterm benefits of New Zealander's , took up a lease in the workshops and yards, and encourage voluntary workers to assist in the painstaking projects of restoration. Being close to the city centre and on the main trunk line, this is a unique position for a tourist venture. 

Mainline Steam's brief is to develop their leased buildings into a working museum, education and conference centre with supporting facilities –café etc that will be financially sustainable. The site is now destined for the new Parnell Railway Station, expected to become the 5th busiest station in Auckland. The site is also steeped in history. However, with Kiwi Rail selling the site to Auckland Transport on a proposed cleared site, Mainline Steam have been told to go.


Our role encompassed assessing the widest site parameters and development options; master planning a conceptual proposal to maximise development while retaining the Mainline Steam buildings as the catalyst for the new project. The exercise has shown that there are many opportunities to retain Mainline Steam and get a good return from the balance of the developed site. 

Pacific Environments is committed to architectural design excellence, creating inspiring 'fit for purpose' built environment solutions for our clients. 


Sustainability, lifestyle and the creation of enduring investment value is core to our design philosophy.

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