Stage one of the works, which will see roof cladding on the eastern section of the building replaced, is expected to be finished next month.
Fremantle Mayor Brad Pettitt said the building had high cultural significance but required substantial conservation work to make it usable in the future.
‘As one of Fremantle’s oldest heritage buildings and given its visible location and usage, the restoration of the Boys’ School has been a high priority for council,’ he said.
‘It’s a wonderful old building with a lot of history and character but certain aspects of the building have deteriorated over time.
‘By using a staged approach, the City and its contractors can conduct a detailed analysis at the completion of each stage to prioritise the work that needs to be done.’
The city is currently tendering for stage two.