Police are investigating a deliberately lit fire at Herdsmans Cove overnight.

Firefighters and police were called to the unoccupied property on Fisher Drive about 9:30pm yesterday, arriving to find the residence well alight.

Fire investigators have deemed the fire to be deliberately lit, and police are investigating.

Anyone with information is asked to contact Bridgewater Police on 131 444 or Crime Stoppers Tasmania on crimestopperstas.com.au