Contractors Dawson Building have begun work on replacing the roof and guttering on the former bank building at the Lowe St-Gladstone Rd corner in the city.
The site was covered in protective plastic water-proof sheeting this week after extensive scaffolding was put in place.
A company spokesman said the roof replacement will take about a month.
There has been speculation around what the building will be used for in future.
The Herald understands at this stage it remains untenanted.