Two crews from Launceston and Rocherlea attended the fire at 6am on Vermont Road. 

The arriving crews discovered a large amount of smoke pouring from the rear of the weatherboard house. The crews entered the building, located the fire, and quickly brought it under control.

"Due to the time of the fire crews were initially concerned people may have been sleeping in the house, however a search confirmed the house was vacant," Launceston Fire Station Officer David Casteller said.

The Tasmania Fire Service investigator, police and TechSafe are investigation into the cause of the fire.