FIRE crews from across Devon are investigating how a roof went up in flames at a farm in Rackenford.
Appliances from Tiverton, Crediton, Cullompton and Witheridge were called to Stoneland Farm at around 11.30am.
An incident command unit from Exmouth and a water carrier from Danes Castle, Exeter, are also in attendance.
Station manager, Graham Rooms, who was at the scene said: "When we got the initial call the roof was well alight. We are currently unable to determine the cause of the fire but we have a fire investigation officer on the scene.
"We are now containing the fire to the roof area and it is a case of stripping the roof tiles and dampening down the hot embers.
"Crews did well to contain the fire in the early stages to stop it spreading any further."
Mr Rooms also said that the owner of the house is in Canada and currently rents it to tenants.
Crews are now carrying out salvage work to protect as much of the property as they can.
Mr Rooms added: "We will probably be here for another two and a half hours containing the operation. We are now scaling back on the number of appliances at the scene."
Spokesperson for Devon and Somerset Fire Rescue, Paul Slaven, said: "The crews are still on the scene and will be there for a little while yet. The investigating officer has started looking into the causes but it is too early to say anything yet."
All crews have now left the scene and investigating officers will return to carry on with enquiries in the morning.