Infrastructure Australia has released a positive evaluation of the Newcastle to Sydney High Speed Rail business case, marking a significant milestone for the first stage of a proposed national high speed rail network.

The evaluation, released Thursday, supports the project progressing to the Development Phase. The proposal aims to establish an efficient transport solution between Newcastle and Sydney to support an additional 9.2 million people expected in the corridor by 2061.

Infrastructure Australia found the business case presents a well-evidenced case for change, addressing connectivity challenges, rapid population growth, and housing pressures in the corridor. The evaluation highlights opportunities for productivity, tourism, and jobs, while aligning with national net zero targets through more sustainable transport solutions.

The business case provides strong evidence the proposal will enhance quality of life and deliver significant social and economic benefits, including improved access to housing, education, and health services.

The Public Transport Association of Australia and New Zealand (PTAANZ) welcomed the evaluation. Chief Executive Lauren Streifer said high speed rail would reshape Australian cities and better connect regions.

“Infrastructure Australia’s evaluation shows 58% of forecast benefits will come from unlocking land, potentially creating 150,000 new homes,” Ms Streifer said. “Australian high speed rail will provide greater access to opportunities by bringing people, jobs and homes closer.”

She pointed to international examples, noting high speed rail has made homes more affordable in Japan and given residents more choice about where to live. More than 31,000 people are currently working on the UK’s second high speed line.

Ms Streifer emphasised success would depend on the high speed route being reserved and protected to achieve ongoing cross-party support.

The Newcastle to Sydney corridor is the first stage of a long-term vision to connect Brisbane, Sydney, Canberra and Melbourne through over 1,800 kilometres of dedicated high speed rail tracks.

Infrastructure Australia recommends the business case be updated to capture outputs of the Development Phase before a final investment decision. This should include more detailed analysis of greenhouse gas emissions and environmental approval costs.

The evaluation noted the proposed alignment intersects several protected areas and heritage sites, with tunnelling expected to mitigate many effects.

Transport industry leaders will meet in Sydney on 19 November to explore protecting infrastructure corridors and securing housing and community benefits, in an event hosted by PTAANZ.