Police are calling for information on a house fire in the Launceston suburb of Newnham early Saturday, which investigators believe was deliberately lit.

Emergency services were called to Mount Stuart Drive about 2am on Saturday with the report of a fire at a house.

The fire was extinguished by Tasmania Fire Service crews, but it caused a significant amount of damage to the property.

No one was home at the time, and there were no injuries reported.

Fire investigators were at the scene earlier today and have determined the blaze is suspicious.

Anyone with information, or who may have video footage of the incident, is asked to contact police on 131 444 and quote ORS 784 844.

Information can also be provided anonymously to Crime Stoppers on 1800 333 000 or online at crimestopperstas.com.au