Update. A 19-year-old north-west woman will be proceeded against for the St Vincent De Paul fire in Smithton on Sunday April 10.
Smithton Police and Tasmania Fire Service were called to the Nelson Street building at 12am, where a fire had started in the loading bay before spreading to the building.
No one was injured in the fire.
It took four crews just under an hour to extinguish the flames, with smoke and fire damage estimated at $50,000.