Police are investigating a suspicious house fire in Rocherlea early this morning.

Around 3am Tasmania Police and the Tasmania Fire Service attended a report of a house on fire on Ferntree Court.

Tasmania Fire Service extinguished the fire which caused around $250,000 damage.

The house was unoccupied at the time of the fire.

Initial investigations have determined the fire to be suspicious, with further examination of the scene to occur by the Northern Criminal Investigation Branch (CIB) and Tasmania Fire Service fire scene examiners.

Anyone with information in relation to the fire or suspicious activity in the area at the time is asked to contact Northern CIB on 131 444 or Crime Stoppers anonymously on 1800 333 000.