The state government has announced a $580 million redevelopment of Perth's old Treasury building which will include a six star hotel, a 35 storey office tower and demolition of the adjacent Law Chambers building on Hay Street.

The state government has announced a $580 million redevelopment of Perth's old Treasury building which will include a six star hotel, a 35 storey office tower and demolition of the adjacent Law Chambers building on Hay Street.