Stage 12 – minor signalling works, relocation of overhead wiring (OHW) air gap, new signal building and installation of combined service routes, including air supply.
Stage 13 – the installation of a new turnout 706 and replacement of an existing turnout 705 (including associated OHW and signalling works), drainage works, installation of combined service routes and data changes to the Phoenix Panel within the Auburn Maintenance Centre. The works in this stage use existing Granville Solid State Interlocking.